)]}'
{
  "log": [
    {
      "commit": "b76db735407a26c1036fdfef249ddc35eb969bc4",
      "tree": "02a9eb85b34765bc1eb82d632b1913ce79b8a6d6",
      "parents": [
        "680d794babebc74484c141448baa9b95b211cf5e"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Fri Feb 08 04:21:49 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Feb 08 09:22:41 2008 -0800"
      },
      "message": "mount-options-fix-tmpfs-fix\n\nDocumentation/SubmitCheckist, please.\n\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "680d794babebc74484c141448baa9b95b211cf5e",
      "tree": "fa8b9c085fceaed12b54ea20a8c04696c750053e",
      "parents": [
        "90d09e141bb23bf0df5e31c40fb3175c17e8bda2"
      ],
      "author": {
        "name": "akpm@linux-foundation.org",
        "email": "akpm@linux-foundation.org",
        "time": "Fri Feb 08 04:21:48 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Feb 08 09:22:41 2008 -0800"
      },
      "message": "mount options: fix tmpfs\n\nAdd .show_options super operation to tmpfs.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "82369553d6d3bc67c54129a02e0bc0b5b88f3045",
      "tree": "1d80a6cc9f5840550ad025b32ac8ef8fd915fd98",
      "parents": [
        "3be91277e754c7db04eae145ba622b3a3e3ad96d"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Thu Feb 07 00:14:22 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Feb 07 08:42:20 2008 -0800"
      },
      "message": "memcgroup: fix hang with shmem/tmpfs\n\nThe memcgroup regime relies upon a cgroup reclaiming pages from itself within\nadd_to_page_cache: which may involve some waiting.  Whereas shmem and tmpfs\nrely upon using add_to_page_cache while holding a spinlock: when it cannot\nwait.  The consequence is that when a cgroup reaches its limit, shmem_getpage\njust hangs - unless there is outside memory pressure too, neither kswapd nor\nradix_tree_preload get it out of the retry loop.\n\nIn most cases we can mem_cgroup_cache_charge the page waitably first, to\nattach the page_cgroup in advance, so add_to_page_cache will do no more than\nincrement a count; then mem_cgroup_uncharge_page after (in both success and\nfailure cases) to balance the books again.\n\nAnd where there used to be a congestion_wait for kswapd (recently made\nredundant by radix_tree_preload), use mem_cgroup_cache_charge with NULL page\nto go through a cycle of allocation and freeing, without accounting to any\nparticular page, and without updating the statistics vector.  This brings the\ncgroup below its limit so the next try usually succeeds.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "42492594043d621a7910ff5877c3eb9202870b45",
      "tree": "9188d112c019a189606847dc1d90ccc63c1bacf2",
      "parents": [
        "3729145821e3088a0c3c4183037fde356204bf97"
      ],
      "author": {
        "name": "David P. Quigley",
        "email": "dpquigl@tycho.nsa.gov",
        "time": "Mon Feb 04 22:29:39 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:20 2008 -0800"
      },
      "message": "VFS/Security: Rework inode_getsecurity and callers to return resulting buffer\n\nThis patch modifies the interface to inode_getsecurity to have the function\nreturn a buffer containing the security blob and its length via parameters\ninstead of relying on the calling function to give it an appropriately sized\nbuffer.\n\nSecurity blobs obtained with this function should be freed using the\nrelease_secctx LSM hook.  This alleviates the problem of the caller having to\nguess a length and preallocate a buffer for this function allowing it to be\nused elsewhere for Labeled NFS.\n\nThe patch also removed the unused err parameter.  The conversion is similar to\nthe one performed by Al Viro for the security_getprocattr hook.\n\nSigned-off-by: David P. Quigley \u003cdpquigl@tycho.nsa.gov\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1b1b32f2c6f6bb32535d2da62075b51c980880eb",
      "tree": "686aac685a4c04f085dc17cc1a05910149a04933",
      "parents": [
        "b409f9fcf04692c0f603d28c73d2e3dfed27bf54"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:55 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:16 2008 -0800"
      },
      "message": "tmpfs: fix shmem_swaplist races\n\nIntensive swapoff testing shows shmem_unuse spinning on an entry in\nshmem_swaplist pointing to itself: how does that come about?  Days pass...\n\nFirst guess is this: shmem_delete_inode tests list_empty without taking the\nglobal mutex (so the swapping case doesn\u0027t slow down the common case); but\nthere\u0027s an instant in shmem_unuse_inode\u0027s list_move_tail when the list entry\nmay appear empty (a rare case, because it\u0027s actually moving the head not the\nthe list member).  So there\u0027s a danger of leaving the inode on the swaplist\nwhen it\u0027s freed, then reinitialized to point to itself when reused.  Fix that\nby skipping the list_move_tail when it\u0027s a no-op, which happens to plug this.\n\nBut this same spinning then surfaces on another machine.  Ah, I\u0027d never\nsuspected it, but shmem_writepage\u0027s swaplist manipulation is unsafe: though we\nstill hold page lock, which would hold off inode deletion if the page were in\npagecache, it doesn\u0027t hold off once it\u0027s in swapcache (free_swap_and_cache\ndoesn\u0027t wait on locked pages).  Hmm: we could put the the inode on swaplist\nearlier, but then shmem_unuse_inode could never prune unswapped inodes.\n\nFix this with an igrab before dropping info-\u003elock, as in shmem_unuse_inode;\nthough I am a little uneasy about the iput which has to follow - it works, and\nI see nothing wrong with it, but it is surprising that shmem inode deletion\nmay now occur below shmem_writepage.  Revisit this fix later?\n\nAnd while we\u0027re looking at these races: the way shmem_unuse tests swapped\nwithout holding info-\u003elock looks unsafe, if we\u0027ve more than one swap area: a\nracing shmem_writepage on another page of the same inode could be putting it\nin swapcache, just as we\u0027re deciding to remove the inode from swaplist -\nthere\u0027s a danger of going on swap without being listed, so a later swapoff\nwould hang, being unable to locate the entry.  Move that test and removal down\ninto shmem_unuse_inode, once info-\u003elock is held.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b409f9fcf04692c0f603d28c73d2e3dfed27bf54",
      "tree": "de287c277045c72c485867a52b37f4e7d0c5815a",
      "parents": [
        "2e0e26c76a35de8f8bec6b2b917518cfeb52888a"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:54 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: radix_tree_preloading\n\nNick has observed that shmem.c still uses GFP_ATOMIC when adding to page cache\nor swap cache, without any radix tree preload: so tending to deplete emergency\nreserves of memory.\n\nGFP_ATOMIC remains appropriate in shmem_writepage\u0027s add_to_swap_cache: it\u0027s\nbeing called under memory pressure, so must not wait for more memory to become\navailable.  But shmem_unuse_inode now has a window in which it can and should\npreload with GFP_KERNEL, and say GFP_NOWAIT instead of GFP_ATOMIC in its\nadd_to_page_cache.\n\nshmem_getpage is not so straightforward: its filepage/swappage integrity\nrelies upon exchanging between caches under spinlock, and it would need a lot\nof restructuring to place the preloads correctly.  Instead, follow its pattern\nof retrying on races: use GFP_NOWAIT instead of GFP_ATOMIC in\nadd_to_page_cache, and begin each circuit of the repeat loop with a sleeping\nradix_tree_preload, followed immediately by radix_tree_preload_end - that\nwon\u0027t guarantee success in the next add_to_page_cache, but doesn\u0027t need to.\n\nAnd we can then remove that bothersome congestion_wait: when needed, it\u0027ll\nautomatically get done in the course of the radix_tree_preload.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nLooks-good-to: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2e0e26c76a35de8f8bec6b2b917518cfeb52888a",
      "tree": "1357781bfe035c2401c65b2d0203385a47516bf5",
      "parents": [
        "cb5f7b9a47963d9238398cd0c2676473e3c6896d"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:53 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: open a window in shmem_unuse_inode\n\nThere are a couple of reasons (patches follow) why it would be good to open a\nwindow for sleep in shmem_unuse_inode, between its search for a matching swap\nentry, and its handling of the entry found.\n\nshmem_unuse_inode must then use igrab to hold the inode against deletion in\nthat window, and its corresponding iput might result in deletion: so it had\nbetter unlock_page before the iput, and might as well release the page too.\n\nNor is there any need to hold on to shmem_swaplist_mutex once we know we\u0027ll\nleave the loop.  So this unwinding moves from try_to_unuse and shmem_unuse\ninto shmem_unuse_inode, in the case when it finds a match.\n\nLet try_to_unuse break on error in the shmem_unuse case, as it does in the\nunuse_mm case: though at this point in the series, no error to break on.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "cb5f7b9a47963d9238398cd0c2676473e3c6896d",
      "tree": "bc2eed3d7c2c3787f50030c7c493c4295eaf673c",
      "parents": [
        "a0ee5ec520ede1dc8e2194623bcebfd9fab408f2"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:52 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: make shmem_unuse more preemptible\n\nshmem_unuse is at present an unbroken search through every swap vector page of\nevery tmpfs file which might be swapped, all under shmem_swaplist_lock.  This\ndates from long ago, when the caller held mmlist_lock over it all too: long\ngone, but there\u0027s never been much pressure for preemptible swapoff.\n\nMake it a little more preemptible, replacing shmem_swaplist_lock by\nshmem_swaplist_mutex, inserting a cond_resched in the main loop, and a\ncond_resched_lock (on info-\u003elock) at one convenient point in the\nshmem_unuse_inode loop, where it has no outstanding kmap_atomic.\n\nIf we\u0027re serious about preemptible swapoff, there\u0027s much further to go e.g.\nI\u0027m stupid to let the kmap_atomics of the decreasingly significant HIGHMEM\ncase dictate preemptiblility for other configs.  But as in the earlier patch\nto make swapoff scan ptes preemptibly, my hidden agenda is really towards\nmaking memcgroups work, hardly about preemptibility at all.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a0ee5ec520ede1dc8e2194623bcebfd9fab408f2",
      "tree": "74a3668798213661a9e62a1b576f081f1ce44838",
      "parents": [
        "d9fe526a83b84edc9c5ff217a00c896bfc20b2ce"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:51 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: allocate on read when stacked\n\ntmpfs is expected to limit the memory used (unless mounted with nr_blocks\u003d0 or\nsize\u003d0).  But if a stacked filesystem such as unionfs gets pages from a sparse\ntmpfs file by reading holes, and then writes to them, it can easily exceed any\nsuch limit at present.\n\nSo suppress the SGP_READ \"don\u0027t allocate page\" ZERO_PAGE optimization when\nreading for the kernel (a KERNEL_DS check, ugh, sorry about that).  Indeed,\npessimistically mark such pages as dirty, so they cannot get reclaimed and\nunaccounted by mistake.  The venerable shmem_recalc_inode code (originally to\naccount for the reclaim of clean pages) suffices to get the accounting right\nwhen swappages are dropped in favour of more uptodate filepages.\n\nThis also fixes the NULL shmem_swp_entry BUG or oops in shmem_writepage,\ncaused by unionfs writing to a very sparse tmpfs file: to minimize memory\nallocation in swapout, tmpfs requires the swap vector be allocated upfront,\nwhich wasn\u0027t always happening in this stacked case.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d9fe526a83b84edc9c5ff217a00c896bfc20b2ce",
      "tree": "aecb9dbd92108915ba255df8f04d106c2099bf48",
      "parents": [
        "73b1262fa43a778b1e154deea632cdef5009d6a1"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:51 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: allow filepage alongside swappage\n\ntmpfs has long allowed for a fresh filepage to be created in pagecache, just\nbefore shmem_getpage gets the chance to match it up with the swappage which\nalready belongs to that offset.  But unionfs_writepage now does a\nfind_or_create_page, divorced from shmem_getpage, which leaves conflicting\nfilepage and swappage outstanding indefinitely, when unionfs is over tmpfs.\n\nTherefore shmem_writepage (where a page is swizzled from file to swap) must\nnow be on the lookout for existing swap, ready to free it in favour of the\nmore uptodate filepage, instead of BUGging on that clash.  And when the\nadd_to_page_cache fails in shmem_unuse_inode, it must defer to an uptodate\nfilepage, otherwise swapoff would hang.  Whereas when add_to_page_cache fails\nin shmem_getpage, it should retry in the same way it already does.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "73b1262fa43a778b1e154deea632cdef5009d6a1",
      "tree": "409f14e78e23cd999e8c3d1e0945f0fa9b67048f",
      "parents": [
        "f000944d03a5b74ab3c92b2fcdf0e944cc898065"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:50 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: move swap swizzling into shmem\n\nmove_to_swap_cache and move_from_swap_cache functions (which swizzle a page\nbetween tmpfs page cache and swap cache, to avoid page copying) are only used\nby shmem.c; and our subsequent fix for unionfs needs different treatments in\nthe two instances of move_from_swap_cache.  Move them from swap_state.c into\ntheir callsites shmem_writepage, shmem_unuse_inode and shmem_getpage, making\nadd_to_swap_cache externally visible.\n\nshmem.c likes to say set_page_dirty where swap_state.c liked to say\nSetPageDirty: respect that diversity, which __set_page_dirty_no_writeback\nmakes moot (and implies we should lose that \"shift page from clean_pages to\ndirty_pages list\" comment: it\u0027s on neither).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "818db35992c249dc32c1d86daf7d533fb0952f5d",
      "tree": "8577fe7cff367eade84f632621b16054c362d39a",
      "parents": [
        "5b04c6890f0dc7ea6c85b9adebc883c55c667d97"
      ],
      "author": {
        "name": "Michael Marineau",
        "email": "mike@marineau.org",
        "time": "Mon Feb 04 22:28:48 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "tmpfs: fix mounts when size is less than the page size\n\nWhen tmpfs is mounted with a size less than one page, the number of blocks\nis set to 0 which makes the tmpfs mount unlimited.  This can lead to a\nquick and surprising death if someone typos a tmpfs mount command and\nwrites too much.\n\ntmpfs can still be mounted as unlimited if size or nr_blocks is exactly 0,\nas Documentation/filesystems/tmpfs.txt says.\n\nHugh: do this by rounding size up instead of down in all cases: which\nslightly expands other odd-sized tmpfs mounts, but in a consistent way.\n\nSigned-off-by: Michael Marineau \u003cmike@marineau.org\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5b04c6890f0dc7ea6c85b9adebc883c55c667d97",
      "tree": "50f060de1edcd5cda14290f13bad0e74433b0a67",
      "parents": [
        "2e441889c38fe1b6ef6b963e6993076aa120176c"
      ],
      "author": {
        "name": "Pavel Emelyanov",
        "email": "xemul@openvz.org",
        "time": "Mon Feb 04 22:28:47 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "shmem: factor out sbi-\u003efree_inodes manipulations\n\nThe shmem_sb_info structure has a number of free_inodes. This\nvalue is altered in appropriate places under spinlock and with\nthe sbi-\u003emax_inodes !\u003d 0 check.\n\nConsolidate these manipulations into two helpers.\n\nThis is minus 42 bytes of shmem.o and minus 4 :) lines of code.\n\n[akpm@linux-foundation.org: fix error return values]\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5402b976ae0be96b3a32f3508ab7308c380d6477",
      "tree": "d2c0900086033ea1fdeb3e1540e733d962cd177c",
      "parents": [
        "d3602444e1e3485890eea5f61366e19a287c00c4"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:44 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "shmem_file_write is redundant\n\nWith the old aops, writing to a tmpfs file had to use its own special method:\nthe generic method would pass in a fresh page to prepare_write when the right\npage was there in swapcache - which was inefficient to handle, even once we\u0027d\nconcocted the code to handle it.\n\nWith the new aops, the generic method uses shmem_write_end, which lets\nshmem_getpage find the right page: so now abandon shmem_file_write in favour\nof the generic method.  Yes, that does do several things that tmpfs hasn\u0027t\nreally needed (notably balance_dirty_pages_ratelimited, which ramfs also\ncalls); but more use of common code is preferable.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d3602444e1e3485890eea5f61366e19a287c00c4",
      "tree": "f27cca0ce7c113c6b8f15f77abc3124faea9e2c8",
      "parents": [
        "27d54b398ec0edea0e7417f003171017300e0efc"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:44 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:15 2008 -0800"
      },
      "message": "shmem_getpage return page locked\n\nIn the new aops, write_begin is supposed to return the page locked: though\nI\u0027ve seen no ill effects, that\u0027s been overlooked in the case of\nshmem_write_begin, and should be fixed.  Then shmem_write_end must unlock the\npage: do so _after_ updating i_size, as we found to be important in other\nfilesystems (though since shmem pages don\u0027t go the usual writeback route, they\nnever suffered from that corruption).\n\nFor shmem_write_begin to return the page locked, we need shmem_getpage to\nreturn the page locked in SGP_WRITE case as well as SGP_CACHE case: let\u0027s\nsimplify the interface and return it locked even when SGP_READ.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "27d54b398ec0edea0e7417f003171017300e0efc",
      "tree": "2167c058ab0734bbb424ec27b2dc19d58fa7befd",
      "parents": [
        "02098feaa42b2e0087fbbe6c6ab9a23e4653b16a"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:43 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:14 2008 -0800"
      },
      "message": "shmem: SGP_QUICK and SGP_FAULT redundant\n\nRemove SGP_QUICK from the sgp_type enum: it was for shmem_populate and has no\nusers now.  Remove SGP_FAULT from the enum: SGP_CACHE does just as well (and\nshmem_getpage is about to return with page always locked).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "02098feaa42b2e0087fbbe6c6ab9a23e4653b16a",
      "tree": "494eaf13f204c9384d4316202fd76cd1b5d960ad",
      "parents": [
        "46017e954826ac59e91df76341a3f76b45467847"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:42 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:14 2008 -0800"
      },
      "message": "swapin needs gfp_mask for loop on tmpfs\n\nBuilding in a filesystem on a loop device on a tmpfs file can hang when\nswapping, the loop thread caught in that infamous throttle_vm_writeout.\n\nIn theory this is a long standing problem, which I\u0027ve either never seen in\npractice, or long ago suppressed the recollection, after discounting my load\nand my tmpfs size as unrealistically high.  But now, with the new aops, it has\nbecome easy to hang on one machine.\n\nLoop used to grab_cache_page before the old prepare_write to tmpfs, which\nseems to have been enough to free up some memory for any swapin needed; but\nthe new write_begin lets tmpfs find or allocate the page (much nicer, since\ngrab_cache_page missed tmpfs pages in swapcache).\n\nWhen allocating a fresh page, tmpfs respects loop\u0027s mapping_gfp_mask, which\nhas __GFP_IO|__GFP_FS stripped off, and throttle_vm_writeout is designed to\nbreak out when __GFP_IO or GFP_FS is unset; but when tmfps swaps in,\nread_swap_cache_async allocates with GFP_HIGHUSER_MOVABLE regardless of the\nmapping_gfp_mask - hence the hang.\n\nSo, pass gfp_mask down the line from shmem_getpage to shmem_swapin to\nswapin_readahead to read_swap_cache_async to add_to_swap_cache.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "46017e954826ac59e91df76341a3f76b45467847",
      "tree": "711a35e3936118665d0eac2afeef8758b4f4e95f",
      "parents": [
        "c4cc6d07b2f465fbf5efd99bbe772a49c515f3f2"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:41 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:14 2008 -0800"
      },
      "message": "swapin_readahead: move and rearrange args\n\nswapin_readahead has never sat well in mm/memory.c: move it to mm/swap_state.c\nbeside its kindred read_swap_cache_async.  Why were its args in a different\norder?  rearrange them.  And since it was always followed by a\nread_swap_cache_async of the target page, fold that in and return struct\npage*.  Then CONFIG_SWAP\u003dn no longer needs valid_swaphandles and\nread_swap_cache_async stubs.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c4cc6d07b2f465fbf5efd99bbe772a49c515f3f2",
      "tree": "0aec353fce4ee6cd16e3051ecfdf55e8022aaa5a",
      "parents": [
        "75897d60a54ccee94253312107f941a83b5077cb"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Feb 04 22:28:40 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 05 09:44:14 2008 -0800"
      },
      "message": "swapin_readahead: excise NUMA bogosity\n\nFor three years swapin_readahead has been cluttered with fanciful CONFIG_NUMA\ncode, advancing addr, and stepping on to the next vma at the boundary, to line\nup the mempolicy for each page allocation.\n\nIt _might_ be a good idea to allocate swap more according to vma layout; but\nthe fact is, that\u0027s not how we do it at all, 2.6 even less than 2.4: swap is\nallocated as needed for pages as they sink to the bottom of the inactive LRUs.\n Sometimes that may match vma layout, but not so often that it\u0027s worth going\nto these misleading vma-\u003evm_next lengths: rip all that out.\n\nOriginally I intended to retain the incrementation of addr, but correct its\ninitial value: valid_swaphandles generally supplies an offset below the target\naddr (this is readaround rather than readahead), but addr has not been\nadjusted accordingly, so in the interleave case it has usually been allocating\nthe target page from the \"wrong\" node (though that may not matter very much).\n\nBut look at the equivalent shmem_swapin code: either by oversight or by\ndesign, though it has all the apparatus for choosing a new mempolicy per page,\nit uses the same idx throughout, choosing the same mempolicy and interleave\nnode for each page of the cluster.\n\nWhich is actually a much better strategy: each node has its own LRUs and its\nown kswapd, so if you\u0027re betting on any particular relationship between swap\nand node, the best bet is that nearby swap entries belong to pages from the\nsame node - even when the mempolicy of the target page is to interleave.  And\nexamining a map of nodes corresponding to swap entries on a numa\u003dfake system\nbears this out.  (We could later tweak swap allocation to make it even more\nlikely, but this patch is merely about removing cruft.)\n\nSo, neither adjust nor increment addr in swapin_readahead, and then\nshmem_swapin can use it too; the pseudo-vma to pass policy need only be set up\nonce per cluster, and so few fields of pvma are used, let\u0027s skip the memset -\nfrom shmem_alloc_page also.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e84e2e132c9c66d8498e7710d4ea532d1feaaac5",
      "tree": "f754be23d6b37af04d203eb6e34ac7cdb5f84a4b",
      "parents": [
        "9bfb52ad716e74785b2402b7ea17f30e0344b8e8"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Wed Nov 28 18:55:10 2007 +0000"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed Nov 28 11:04:28 2007 -0800"
      },
      "message": "tmpfs: restore missing clear_highpage\n\ntmpfs was misconverted to __GFP_ZERO in 2.6.11.  There\u0027s an unusual case in\nwhich shmem_getpage receives the page from its caller instead of allocating.\nWe must cover this case by clear_highpage before SetPageUptodate, as before.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "487e9bf25cbae11b131d6a14bdbb3a6a77380837",
      "tree": "0b6666750274aadd22b29b1282aa779831976ca1",
      "parents": [
        "8bca44bbd39007065cc6a4e3a50201475629a6cf"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Oct 29 14:37:20 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Oct 30 08:06:55 2007 -0700"
      },
      "message": "fix tmpfs BUG and AOP_WRITEPAGE_ACTIVATE\n\nIt\u0027s possible to provoke unionfs (not yet in mainline, though in mm and\nsome distros) to hit shmem_writepage\u0027s BUG_ON(page_mapped(page)).  I expect\nit\u0027s possible to provoke the 2.6.23 ecryptfs in the same way (but the\n2.6.24 ecryptfs no longer calls lower level\u0027s -\u003ewritepage).\n\nThis came to light with the recent find that AOP_WRITEPAGE_ACTIVATE could\nleak from tmpfs via write_cache_pages and unionfs to userspace.  There\u0027s\nalready a fix (e423003028183df54f039dfda8b58c49e78c89d7 - writeback: don\u0027t\npropagate AOP_WRITEPAGE_ACTIVATE) in the tree for that, and it\u0027s okay so\nfar as it goes; but insufficient because it doesn\u0027t address the underlying\nissue, that shmem_writepage expects to be called only by vmscan (relying on\nbacking_dev_info capabilities to prevent the normal writeback path from\never approaching it).\n\nThat\u0027s an increasingly fragile assumption, and ramdisk_writepage (the other\nsource of AOP_WRITEPAGE_ACTIVATEs) is already careful to check\nwbc-\u003efor_reclaim before returning it.  Make the same check in\nshmem_writepage, thereby sidestepping the page_mapped BUG also.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Erez Zadok \u003cezk@cs.sunysb.edu\u003e\nCc: \u003cstable@kernel.org\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "39655164405940d4818224a085e35420e2f97aed",
      "tree": "6b019b3bc77eecac1731fe64e5c031790c2b5223",
      "parents": [
        "cfaea787c05822acbb4d8963baee5edd1cc0258f"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Sun Oct 21 16:42:17 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Oct 22 08:13:21 2007 -0700"
      },
      "message": "exportfs: make struct export_operations const\n\nNow that nfsd has stopped writing to the find_exported_dentry member we an\nmark the export_operations const\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Timothy Shimmin \u003ctes@sgi.com\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Chris Mason \u003cmason@suse.com\u003e\nCc: Jeff Mahoney \u003cjeffm@suse.com\u003e\nCc: \"Vladimir V. Saveliev\" \u003cvs@namesys.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "480b116c98344ca246f50aade6eb7aca98151a2f",
      "tree": "72ba3ba17f8c5a72fbd168d1a963b06e269ad898",
      "parents": [
        "905251a02eeccc59f8e1d743679b8edadc5f738b"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Sun Oct 21 16:42:13 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Oct 22 08:13:20 2007 -0700"
      },
      "message": "shmem: new export ops\n\nI\u0027m not sure what people were thinking when adding support to export tmpfs,\nbut here\u0027s the conversion anyway:\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ce8d2cdf3d2b73e346c82e6f0a46da331df6364c",
      "tree": "bf3597f2d4f57d6e30a7703d7fce0dbf8c757962",
      "parents": [
        "348366b963e4e1462c8354827a9cb910aa865bf2"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Tue Oct 16 23:31:13 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed Oct 17 08:43:04 2007 -0700"
      },
      "message": "r/o bind mounts: filesystem helpers for custom \u0027struct file\u0027s\n\nWhy do we need r/o bind mounts?\n\nThis feature allows a read-only view into a read-write filesystem.  In the\nprocess of doing that, it also provides infrastructure for keeping track of\nthe number of writers to any given mount.\n\nThis has a number of uses.  It allows chroots to have parts of filesystems\nwritable.  It will be useful for containers in the future because users may\nhave root inside a container, but should not be allowed to write to\nsomefilesystems.  This also replaces patches that vserver has had out of the\ntree for several years.\n\nIt allows security enhancement by making sure that parts of your filesystem\nread-only (such as when you don\u0027t trust your FTP server), when you don\u0027t want\nto have entire new filesystems mounted, or when you want atime selectively\nupdated.  I\u0027ve been using the following script to test that the feature is\nworking as desired.  It takes a directory and makes a regular bind and a r/o\nbind mount of it.  It then performs some normal filesystem operations on the\nthree directories, including ones that are expected to fail, like creating a\nfile on the r/o mount.\n\nThis patch:\n\nSome filesystems forego the vfs and may_open() and create their own \u0027struct\nfile\u0027s.\n\nThis patch creates a couple of helper functions which can be used by these\nfilesystems, and will provide a unified place which the r/o bind mount code\nmay patch.\n\nAlso, rename an existing, static-scope init_file() to a less generic name.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "040b5c6f9503f2d6b35c335f8537bb3035d35547",
      "tree": "71f1693fbcaf9e2a953e66fdf13bbbc20510b60e",
      "parents": [
        "c4f3b63fe15b4629aa1ec163c95ab30423d0f76a"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@sw.ru",
        "time": "Tue Oct 16 23:26:10 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed Oct 17 08:42:47 2007 -0700"
      },
      "message": "SLAB_PANIC more (proc, posix-timers, shmem)\n\nThese aren\u0027t modular, so SLAB_PANIC is OK.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4ba9b9d0ba0a49d91fa6417c7510ee36f48cf957",
      "tree": "191b4f45f926e44b882b1e87a9a85dc12230b892",
      "parents": [
        "b811c202a0edadaac7242ab834fe7ba409978ae7"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Oct 16 23:25:51 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed Oct 17 08:42:45 2007 -0700"
      },
      "message": "Slab API: remove useless ctor parameter and reorder parameters\n\nSlab constructors currently have a flags parameter that is never used.  And\nthe order of the arguments is opposite to other slab functions.  The object\npointer is placed before the kmem_cache pointer.\n\nConvert\n\n        ctor(void *object, struct kmem_cache *s, unsigned long flags)\n\nto\n\n        ctor(struct kmem_cache *s, void *object)\n\nthroughout the kernel\n\n[akpm@linux-foundation.org: coupla fixes]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e0bf68ddec4f4f90e5871404be4f1854c17f3120",
      "tree": "36203a3558cbe26d698bed18be69b3822fb5eef2",
      "parents": [
        "dc62a30e274d003a4d08fb888f1520add4b21373"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Tue Oct 16 23:25:46 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed Oct 17 08:42:45 2007 -0700"
      },
      "message": "mm: bdi init hooks\n\nprovide BDI constructor/destructor hooks\n\n[akpm@linux-foundation.org: compile fix]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d8dc74f212c38407fc9f4367181f8f969b719485",
      "tree": "2ff1ec0aaee1e6b3ee29d258a7158deb4b43688c",
      "parents": [
        "af767cbdd78f293485c294113885d95e7f1da123"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Tue Oct 16 01:26:26 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Oct 16 09:43:03 2007 -0700"
      },
      "message": "mm/shmem.c: make 3 functions static\n\nThis patch makes three needlessly global functions static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e12ba74d8ff3e2f73a583500d7095e406df4d093",
      "tree": "a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb",
      "parents": [
        "c361be55b3128474aa66d31092db330b07539103"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Oct 16 01:25:52 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Oct 16 09:43:00 2007 -0700"
      },
      "message": "Group short-lived and reclaimable kernel allocations\n\nThis patch marks a number of allocations that are either short-lived such as\nnetwork buffers or are reclaimable such as inode allocations.  When something\nlike updatedb is called, long-lived and unmovable kernel allocations tend to\nbe spread throughout the address space which increases fragmentation.\n\nThis patch groups these allocations together as much as possible by adding a\nnew MIGRATE_TYPE.  The MIGRATE_RECLAIMABLE type is for allocations that can be\nreclaimed on demand, but not moved.  i.e.  they can be migrated by deleting\nthem and re-reading the information from elsewhere.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "37b07e4163f7306aa735a6e250e8d22293e5b8de",
      "tree": "5c9c1935253a39aa840a9923bf1c86620cb6f733",
      "parents": [
        "0e1e7c7a739562a321fda07c7cd2a97a7114f8f8"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "Lee.Schermerhorn@hp.com",
        "time": "Tue Oct 16 01:25:39 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Oct 16 09:42:59 2007 -0700"
      },
      "message": "memoryless nodes: fixup uses of node_online_map in generic code\n\nHere\u0027s a cut at fixing up uses of the online node map in generic code.\n\nmm/shmem.c:shmem_parse_mpol()\n\n\tEnsure nodelist is subset of nodes with memory.\n\tUse node_states[N_HIGH_MEMORY] as default for missing\n\tnodelist for interleave policy.\n\nmm/shmem.c:shmem_fill_super()\n\n\tinitialize policy_nodes to node_states[N_HIGH_MEMORY]\n\nmm/page-writeback.c:highmem_dirtyable_memory()\n\n\tsum over nodes with memory\n\nmm/page_alloc.c:zlc_setup()\n\n\tallowednodes - use nodes with memory.\n\nmm/page_alloc.c:default_zonelist_order()\n\n\taverage over nodes with memory.\n\nmm/page_alloc.c:find_next_best_node()\n\n\tskip nodes w/o memory.\n\tN_HIGH_MEMORY state mask may not be initialized at this time,\n\tunless we want to depend on early_calculate_totalpages() [see\n\tbelow].  Will ZONE_MOVABLE ever be configurable?\n\nmm/page_alloc.c:find_zone_movable_pfns_for_nodes()\n\n\tspread kernelcore over nodes with memory.\n\n\tThis required calling early_calculate_totalpages()\n\tunconditionally, and populating N_HIGH_MEMORY node\n\tstate therein from nodes in the early_node_map[].\n\tIf we can depend on this, we can eliminate the\n\tpopulation of N_HIGH_MEMORY mask from __build_all_zonelists()\n\tand use the N_HIGH_MEMORY mask in find_next_best_node().\n\nmm/mempolicy.c:mpol_check_policy()\n\n\tEnsure nodes specified for policy are subset of\n\tnodes with memory.\n\n[akpm@linux-foundation.org: fix warnings]\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "800d15a53e7d14fa26495b7b95d3bfe7877dd69d",
      "tree": "09a59e32043f1b601b73ad6105e7634679337884",
      "parents": [
        "674b892ede247ef4fb8d00918f02e29c32b9bbaf"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Tue Oct 16 01:25:03 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Oct 16 09:42:55 2007 -0700"
      },
      "message": "implement simple fs aops\n\nImplement new aops for some of the simpler filesystems.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "43fac94dd62667c83dd2daa5b7ac548512af780a",
      "tree": "68b8cf73959afd24410f3f398bda5953c7dcbadd",
      "parents": [
        "39e91e433169bdfd5a312654e5988986662afd7f"
      ],
      "author": {
        "name": "Jesper Juhl",
        "email": "jesper.juhl@gmail.com",
        "time": "Tue Oct 16 01:24:30 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Oct 16 09:42:52 2007 -0700"
      },
      "message": "Clean up duplicate includes in mm/\n\nThis patch cleans up duplicate includes in\n\tmm/\n\nSigned-off-by: Jesper Juhl \u003cjesper.juhl@gmail.com\u003e\nAcked-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "20c2df83d25c6a95affe6157a4c9cac4cf5ffaac",
      "tree": "415c4453d2b17a50abe7a3e515177e1fa337bd67",
      "parents": [
        "64fb98fc40738ae1a98bcea9ca3145b89fb71524"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Fri Jul 20 10:11:58 2007 +0900"
      },
      "committer": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Fri Jul 20 10:11:58 2007 +0900"
      },
      "message": "mm: Remove slab destructors from kmem_cache_create().\n\nSlab destructors were no longer supported after Christoph\u0027s\nc59def9f222d44bb7e2f0a559f2906191a0862d7 change. They\u0027ve been\nBUGs for both slab and slub, and slob never supported them\neither.\n\nThis rips out support for the dtor pointer from kmem_cache_create()\ncompletely and fixes up every single callsite in the kernel (there were\nabout 224, not including the slab allocator definitions themselves,\nor the documentation references).\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n"
    },
    {
      "commit": "83c54070ee1a2d05c89793884bea1a03f2851ed4",
      "tree": "dc732f5a9b93fb7004ed23f551bd98b77cc580e0",
      "parents": [
        "d0217ac04ca6591841e5665f518e38064f4e65bd"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:47:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fault feedback #2\n\nThis patch completes Linus\u0027s wish that the fault return codes be made into\nbit flags, which I agree makes everything nicer.  This requires requires\nall handle_mm_fault callers to be modified (possibly the modifications\nshould go further and do things like fault accounting in handle_mm_fault --\nhowever that would be for another patch).\n\n[akpm@linux-foundation.org: fix alpha build]\n[akpm@linux-foundation.org: fix s390 build]\n[akpm@linux-foundation.org: fix sparc build]\n[akpm@linux-foundation.org: fix sparc64 build]\n[akpm@linux-foundation.org: fix ia64 build]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Bryan Wu \u003cbryan.wu@analog.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nAcked-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nAcked-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-by: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Still apparently needs some ARM and PPC loving - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d0217ac04ca6591841e5665f518e38064f4e65bd",
      "tree": "d3309094bb734d34773f97d642593e298a5cfcfc",
      "parents": [
        "ed2f2f9b3ff8debdf512f7687b232c3c1d7d60d7"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:47:03 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fault feedback #1\n\nChange -\u003efault prototype.  We now return an int, which contains\nVM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte.\n FAULT_RET_ code tells the VM whether a page was found, whether it has been\nlocked, and potentially other things.  This is not quite the way he wanted\nit yet, but that\u0027s changed in the next patch (which requires changes to\narch code).\n\nThis means we no longer set VM_CAN_INVALIDATE in the vma in order to say\nthat a page is locked which requires filemap_nopage to go away (because we\ncan no longer remain backward compatible without that flag), but we were\ngoing to do that anyway.\n\nstruct fault_data is renamed to struct vm_fault as Linus asked. address\nis now a void __user * that we should firmly encourage drivers not to use\nwithout really good reason.\n\nThe page is now returned via a page pointer in the vm_fault struct.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "54cb8821de07f2ffcd28c380ce9b93d5784b40d7",
      "tree": "1de676534963d96af42863b20191bc9f80060dea",
      "parents": [
        "d00806b183152af6d24f46f0c33f14162ca1262a"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:46:59 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: merge populate and nopage into fault (fixes nonlinear)\n\nNonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes\nthe virtual address -\u003e file offset differently from linear mappings.\n\n-\u003epopulate is a layering violation because the filesystem/pagecache code\nshould need to know anything about the virtual memory mapping.  The hitch here\nis that the -\u003enopage handler didn\u0027t pass down enough information (ie.  pgoff).\n But it is more logical to pass pgoff rather than have the -\u003enopage function\ncalculate it itself anyway (because that\u0027s a similar layering violation).\n\nHaving the populate handler install the pte itself is likewise a nasty thing\nto be doing.\n\nThis patch introduces a new fault handler that replaces -\u003enopage and\n-\u003epopulate and (later) -\u003enopfn.  Most of the old mechanism is still in place\nso there is a lot of duplication and nice cleanups that can be removed if\neveryone switches over.\n\nThe rationale for doing this in the first place is that nonlinear mappings are\nsubject to the pagefault vs invalidate/truncate race too, and it seemed stupid\nto duplicate the synchronisation logic rather than just consolidate the two.\n\nAfter this patch, MAP_NONBLOCK no longer sets up ptes for pages present in\npagecache.  Seems like a fringe functionality anyway.\n\nNOPAGE_REFAULT is removed.  This should be implemented with -\u003efault, and no\nusers have hit mainline yet.\n\n[akpm@linux-foundation.org: cleanup]\n[randy.dunlap@oracle.com: doc. fixes for readahead]\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d00806b183152af6d24f46f0c33f14162ca1262a",
      "tree": "36f829cf13d5410374a3f00b56ec0b1f8dc3ce3c",
      "parents": [
        "589f1e81bde732dd0b1bc5d01b6bddd4bcb4527b"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:46:57 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fix fault vs invalidate race for linear mappings\n\nFix the race between invalidate_inode_pages and do_no_page.\n\nAndrea Arcangeli identified a subtle race between invalidation of pages from\npagecache with userspace mappings, and do_no_page.\n\nThe issue is that invalidation has to shoot down all mappings to the page,\nbefore it can be discarded from the pagecache.  Between shooting down ptes to\na particular page, and actually dropping the struct page from the pagecache,\ndo_no_page from any process might fault on that page and establish a new\nmapping to the page just before it gets discarded from the pagecache.\n\nThe most common case where such invalidation is used is in file truncation.\nThis case was catered for by doing a sort of open-coded seqlock between the\nfile\u0027s i_size, and its truncate_count.\n\nTruncation will decrease i_size, then increment truncate_count before\nunmapping userspace pages; do_no_page will read truncate_count, then find the\npage if it is within i_size, and then check truncate_count under the page\ntable lock and back out and retry if it had subsequently been changed (ptl\nwill serialise against unmapping, and ensure a potentially updated\ntruncate_count is actually visible).\n\nComplexity and documentation issues aside, the locking protocol fails in the\ncase where we would like to invalidate pagecache inside i_size.  do_no_page\ncan come in anytime and filemap_nopage is not aware of the invalidation in\nprogress (as it is when it is outside i_size).  The end result is that\ndangling (-\u003emapping \u003d\u003d NULL) pages that appear to be from a particular file\nmay be mapped into userspace with nonsense data.  Valid mappings to the same\nplace will see a different page.\n\nAndrea implemented two working fixes, one using a real seqlock, another using\na page-\u003eflags bit.  He also proposed using the page lock in do_no_page, but\nthat was initially considered too heavyweight.  However, it is not a global or\nper-file lock, and the page cacheline is modified in do_no_page to increment\n_count and _mapcount anyway, so a further modification should not be a large\nperformance hit.  Scalability is not an issue.\n\nThis patch implements this latter approach.  -\u003enopage implementations return\nwith the page locked if it is possible for their underlying file to be\ninvalidated (in that case, they must set a special vm_flags bit to indicate\nso).  do_no_page only unlocks the page after setting up the mapping\ncompletely.  invalidation is excluded because it holds the page lock during\ninvalidation of each page (and ensures that the page is not mapped while\nholding the lock).\n\nThis also allows significant simplifications in do_no_page, because we have\nthe page locked in the right place in the pagecache from the start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a569425512253992cc64ebf8b6d00a62f986db3e",
      "tree": "7ea72c75c54697bddbad807af89cc549d7426a69",
      "parents": [
        "6dd4ac3b30b81b5bd0d628af1c89b7da689a38ea"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@infradead.org",
        "time": "Tue Jul 17 04:04:28 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:06 2007 -0700"
      },
      "message": "knfsd: exportfs: add exportfs.h header\n\ncurrently the export_operation structure and helpers related to it are in\nfs.h.  fs.h is already far too large and there are very few places needing the\nexport bits, so split them off into a separate header.\n\n[akpm@linux-foundation.org: fix cifs build]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "769848c03895b63e5662eb7e4ec8c4866f7d0183",
      "tree": "8911c7c312c8b8b172795fa2874c8162e1d3d15a",
      "parents": [
        "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Jul 17 04:03:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated\n\nIt is often known at allocation time whether a page may be migrated or not.\nThis patch adds a flag called __GFP_MOVABLE and a new mask called\nGFP_HIGH_MOVABLE.  Allocations using the __GFP_MOVABLE can be either migrated\nusing the page migration mechanism or reclaimed by syncing with backing\nstorage and discarding.\n\nAn API function very similar to alloc_zeroed_user_highpage() is added for\n__GFP_MOVABLE allocations called alloc_zeroed_user_highpage_movable().  The\nflags used by alloc_zeroed_user_highpage() are not changed because it would\nchange the semantics of an existing API.  After this patch is applied there\nare no in-kernel users of alloc_zeroed_user_highpage() so it probably should\nbe marked deprecated if this patch is merged.\n\nNote that this patch includes a minor cleanup to the use of __GFP_ZERO in\nshmem.c to keep all flag modifications to inode-\u003emapping in the\nshmem_dir_alloc() helper function.  This clean-up suggestion is courtesy of\nHugh Dickens.\n\nAdditional credit goes to Christoph Lameter and Linus Torvalds for shaping the\nconcept.  Credit to Hugh Dickens for catching issues with shmem swap vector\nand ramfs allocations.\n\n[akpm@linux-foundation.org: build fix]\n[hugh@veritas.com: __GFP_ZERO cleanup]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ae976416464b741913a13eea62eb6953ee065733",
      "tree": "48ac14023b494c9f6522ad390f60e4decac41ac3",
      "parents": [
        "1db60cf2056511c7c8cebcbaee308ef6c79b4728"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Jun 04 10:00:39 2007 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jul 10 08:04:15 2007 +0200"
      },
      "message": "shmem: convert to using splice instead of sendfile()\n\nRemove shmem_file_sendfile and resurrect shmem_readpage, as used by tmpfs\nto support loop and sendfile in 2.4 and 2.5.  Now tmpfs can support splice,\nloop and sendfile in the simplest way, using generic_file_splice_read and\ngeneric_file_splice_write (with the aid of shmem_prepare_write).\n\nWe could make some efficiency tweaks later, if there\u0027s a real need;\nbut this is stable and works well as is.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "a210906c1b791af1434323f69427286039c9c8b9",
      "tree": "17f3deeda2c7c6972b9a72113a14571c2cabaae7",
      "parents": [
        "9739ed1c8eafd554788d8e2ba09847b5718a34e7"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Fri Jun 08 13:46:46 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Jun 08 17:23:32 2007 -0700"
      },
      "message": "mount -t tmpfs -o mpol\u003d: check nodes online\n\nRandy Dunlap reports that a tmpfs, mounted with NUMA mpol\u003d specifying an\noffline node, crashes as soon as data is allocated upon it.  Now restrict it\nto online nodes, where before it restricted to MAX_NUMNODES.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Robin Holt \u003cholt@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nTested-and-acked-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a35afb830f8d71ec211531aeb9a621b09a2efb39",
      "tree": "198280081e1f8b2f6c450742a5075cc7904a3d58",
      "parents": [
        "5577bd8a85c8b7643a241789b14fafa9c8a6c7db"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Wed May 16 22:10:57 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu May 17 05:23:04 2007 -0700"
      },
      "message": "Remove SLAB_CTOR_CONSTRUCTOR\n\nSLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "50953fe9e00ebbeffa032a565ab2f08312d51a87",
      "tree": "9f95f56f0b51600959a76cd88ce17f6e9c7a98a3",
      "parents": [
        "4b1d89290b62bb2db476c94c82cf7442aab440c8"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Sun May 06 14:50:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon May 07 12:12:57 2007 -0700"
      },
      "message": "slab allocators: Remove SLAB_DEBUG_INITIAL flag\n\nI have never seen a use of SLAB_DEBUG_INITIAL.  It is only supported by\nSLAB.\n\nI think its purpose was to have a callback after an object has been freed\nto verify that the state is the constructor state again?  The callback is\nperformed before each freeing of an object.\n\nI would think that it is much easier to check the object state manually\nbefore the free.  That also places the check near the code object\nmanipulation of the object.\n\nAlso the SLAB_DEBUG_INITIAL callback is only performed if the kernel was\ncompiled with SLAB debugging on.  If there would be code in a constructor\nhandling SLAB_DEBUG_INITIAL then it would have to be conditional on\nSLAB_DEBUG otherwise it would just be dead code.  But there is no such code\nin the kernel.  I think SLUB_DEBUG_INITIAL is too problematic to make real\nuse of, difficult to understand and there are easier ways to accomplish the\nsame effect (i.e.  add debug code before kfree).\n\nThere is a related flag SLAB_CTOR_VERIFY that is frequently checked to be\nclear in fs inode caches.  Remove the pointless checks (they would even be\npointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors.\n\nThis is the last slab flag that SLUB did not support.  Remove the check for\nunimplemented flags from SLUB.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "16a100190d39592d1d56ff5a0b978b20288c3427",
      "tree": "63af0d78497e540f096262da83ed44ddbe1eab94",
      "parents": [
        "1ae7000630e3c05b6f7e3dfc76472f1bca6c1788"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Thu Mar 29 01:20:37 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Mar 29 08:22:25 2007 -0700"
      },
      "message": "[PATCH] holepunch: fix disconnected pages after second truncate\n\nshmem_truncate_range has its own truncate_inode_pages_range, to free any pages\nracily instantiated while it was in progress: a SHMEM_PAGEIN flag is set when\nthis might have happened.  But holepunching gets no chance to clear that flag\nat the start of vmtruncate_range, so it\u0027s always set (unless a truncate came\njust before), so holepunch almost always does this second\ntruncate_inode_pages_range.\n\nshmem holepunch has unlikely swap\u003c-\u003efile races hereabouts whatever we do\n(without a fuller rework than is fit for this release): I was going to skip\nthe second truncate in the punch_hole case, but Miklos points out that would\nmake holepunch correctness more vulnerable to swapoff.  So keep the second\ntruncate, but follow it by an unmap_mapping_range to eliminate the\ndisconnected pages (freed from pagecache while still mapped in userspace) that\nit might have left behind.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1ae7000630e3c05b6f7e3dfc76472f1bca6c1788",
      "tree": "805d97820dae82a5141f0b1aefc1383bd794e956",
      "parents": [
        "a2646d1e6c8d2239d8054a7d342eb9775a1d273a"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Thu Mar 29 01:20:36 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Mar 29 08:22:25 2007 -0700"
      },
      "message": "[PATCH] holepunch: fix shmem_truncate_range punch locking\n\nMiklos Szeredi observes that during truncation of shmem page directories,\ninfo-\u003elock is released to improve latency (after lowering i_size and\nnext_index to exclude races); but this is quite wrong for holepunching, which\nreceives no such protection from i_size or next_index, and is left vulnerable\nto races with shmem_unuse, shmem_getpage and shmem_writepage.\n\nHold info-\u003elock throughout when holepunching?  No, any user could prevent\nrescheduling for far too long.  Instead take info-\u003elock just when needed: in\nshmem_free_swp when removing the swap entries, and whenever removing a\ndirectory page from the level above.  But so long as we remove before\nscanning, we can safely skip taking the lock at the lower levels, except at\nmisaligned start and end of the hole.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a2646d1e6c8d2239d8054a7d342eb9775a1d273a",
      "tree": "dcb87e633ab7721fc6b94020ba3c8dd5213d6fac",
      "parents": [
        "96fac9dc95b91fc198bfbf4ba90263b06eff023d"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Thu Mar 29 01:20:35 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Mar 29 08:22:25 2007 -0700"
      },
      "message": "[PATCH] holepunch: fix shmem_truncate_range punching too far\n\nMiklos Szeredi observes BUG_ON(!entry) in shmem_writepage() triggered in rare\ncircumstances, because shmem_truncate_range() erroneously removes partially\ntruncated directory pages at the end of the range: later reclaim on pages\npointing to these removed directories triggers the BUG.  Indeed, and it can\nalso cause data loss beyond the hole.\n\nFix this as in the patch proposed by Miklos, but distinguish between \"limit\"\n(how far we need to search: ignore truncation\u0027s next_index optimization in the\nholepunch case - if there are races it\u0027s more consistent to act on the whole\nrange specified) and \"upper_limit\" (how far we can free directory pages:\ngenerally we must be careful to keep partially punched pages, but can relax at\nend of file - i_size being held stable by i_mutex).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cs\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "759b9775c25f5e69aaea8a75c3914019e2dc5539",
      "tree": "14382471e5a23741711443b323199776a94a8c2a",
      "parents": [
        "cc2cccaec88d422e628e6b588078e1dbdc241896"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Mon Mar 05 00:30:28 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Mar 05 07:57:51 2007 -0800"
      },
      "message": "[PATCH] shmem and simple const super_operations\n\nshmem\u0027s super_operations were missed from the recent const-ification;\nand simple_fill_super()\u0027s, which can share with get_sb_pseudo()\u0027s.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Josef \u0027Jeff\u0027 Sipek \u003cjsipek@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9b83a6a8523a8a96b6353174b193c5c93e16c6c3",
      "tree": "33bfdc0e1794b3970b7454d746b20c177037765a",
      "parents": [
        "de01bad2f5dec2977143aa242e7eba71d11a4363"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Wed Feb 28 20:11:03 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Mar 01 14:53:35 2007 -0800"
      },
      "message": "[PATCH] mm/{,tiny-}shmem.c cleanups\n\nshmem_{nopage,mmap} are no longer used in ipc/shm.c\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "92e1d5be91a0e3ffa5c4697eeb09b2aa22792122",
      "tree": "4eb22a9f6c38e9f4cc2a5100cd6659b0af08b7ae",
      "parents": [
        "754661f143e70d66eae6c48532ca245aa05dec0e"
      ],
      "author": {
        "name": "Arjan van de Ven",
        "email": "arjan@linux.intel.com",
        "time": "Mon Feb 12 00:55:39 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Feb 12 09:48:46 2007 -0800"
      },
      "message": "[PATCH] mark struct inode_operations const 2\n\nMany struct inode_operations in the kernel can be \"const\".  Marking them const\nmoves these to the .rodata section, which avoids false sharing with potential\ndirty data.  In addition it\u0027ll catch accidental writes at compile time to\nthese shared resources.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "767193253bbac889e176f90b6f17b7015f986551",
      "tree": "a81c5c90d14c7892e6d7adb0432f4dff4ca3f906",
      "parents": [
        "bd8029b66069d29fd02c304599411ca9bb7fa38c"
      ],
      "author": {
        "name": "Ken Chen",
        "email": "kenchen@google.com",
        "time": "Sat Feb 10 01:43:15 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Sun Feb 11 10:51:19 2007 -0800"
      },
      "message": "[PATCH] simplify shmem_aops.set_page_dirty() method\n\nshmem backed file does not have page writeback, nor it participates in\nbacking device\u0027s dirty or writeback accounting.  So using generic\n__set_page_dirty_nobuffers() for its .set_page_dirty aops method is a bit\noverkill.  It unnecessarily prolongs shm unmap latency.\n\nFor example, on a densely populated large shm segment (sevearl GBs), the\nunmapping operation becomes painfully long.  Because at unmap, kernel\ntransfers dirty bit in PTE into page struct and to the radix tree tag.  The\noperation of tagging the radix tree is particularly expensive because it\nhas to traverse the tree from the root to the leaf node on every dirty\npage.  What\u0027s bothering is that radix tree tag is used for page write back.\n However, shmem is memory backed and there is no page write back for such\nfile system.  And in the end, we spend all that time tagging radix tree and\nnone of that fancy tagging will be used.  So let\u0027s simplify it by introduce\na new aops __set_page_dirty_no_writeback and this will speed up shm unmap.\n\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "92a3d03aab912624cae799e5772a6eb2ef55083f",
      "tree": "6bd85729918e1c56044ad5a1d084838444ab428e",
      "parents": [
        "ba0084048ab785c2cb1d6cc2cccabe642a5b799a"
      ],
      "author": {
        "name": "Badari Pulavarty",
        "email": "pbadari@us.ibm.com",
        "time": "Fri Dec 22 01:06:23 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.osdl.org",
        "time": "Fri Dec 22 08:55:47 2006 -0800"
      },
      "message": "[PATCH] Fix for shmem_truncate_range() BUG_ON()\n\nRan into BUG() while doing madvise(REMOVE) testing.  If we are punching a\nhole into shared memory segment using madvise(REMOVE) and the entire hole\nis below the indirect blocks, we hit following assert.\n\n\t        BUG_ON(limit \u003c\u003d SHMEM_NR_DIRECT);\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d3ac7f892b7d07d61d0895caa4f6e190e43112f8",
      "tree": "0ff35e7e5ab822b600075d79910d3cc136ba07ef",
      "parents": [
        "f3a43f3f64bff8e205c3702f6b4804d66e306848"
      ],
      "author": {
        "name": "Josef \"Jeff\" Sipek",
        "email": "jsipek@cs.sunysb.edu",
        "time": "Fri Dec 08 02:36:44 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.osdl.org",
        "time": "Fri Dec 08 08:28:43 2006 -0800"
      },
      "message": "[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path\n\nChange all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in linux/mm/.\n\nSigned-off-by: Josef \"Jeff\" Sipek \u003cjsipek@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "15ad7cdcfd76450d4beebc789ec646664238184d",
      "tree": "279d05a76ae0906c23ee2de8c5684d95d9886ad3",
      "parents": [
        "4a08a9f68168e547c2baf100020e9b96cae5fbd1"
      ],
      "author": {
        "name": "Helge Deller",
        "email": "deller@gmx.de",
        "time": "Wed Dec 06 20:40:36 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.osdl.org",
        "time": "Thu Dec 07 08:39:46 2006 -0800"
      },
      "message": "[PATCH] struct seq_operations and struct file_operations constification\n\n - move some file_operations structs into the .rodata section\n\n - move static strings from policy_types[] array into the .rodata section\n\n - fix generic seq_operations usages, so that those structs may be defined\n   as \"const\" as well\n\n[akpm@osdl.org: couple of fixes]\nSigned-off-by: Helge Deller \u003cdeller@gmx.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1f370a23f2a3101886953add4bd7f529e3bba016",
      "tree": "589f22c4a5117d756855af3f0530d747ac17185d",
      "parents": [
        "fed806f4072badad614699e1d40202e0ffef5c63"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Wed Dec 06 20:38:21 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.osdl.org",
        "time": "Thu Dec 07 08:39:39 2006 -0800"
      },
      "message": "[PATCH] make mm/shmem.c:shmem_xattr_security_handler static\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e94b1766097d53e6f3ccfb36c8baa562ffeda3fc",
      "tree": "93fa0a8ab84976d4e89c50768ca8b8878d642a0d",
      "parents": [
        "54e6ecb23951b195d02433a741c7f7cb0b796c78"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Wed Dec 06 20:33:17 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.osdl.org",
        "time": "Thu Dec 07 08:39:24 2006 -0800"
      },
      "message": "[PATCH] slab: remove SLAB_KERNEL\n\nSLAB_KERNEL is an alias of GFP_KERNEL.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "3fcfab16c5b86eaa3db3a9a31adba550c5b67141",
      "tree": "bd348fa081b8fbec2c79fbf8f173a306d70b2b2c",
      "parents": [
        "79e2de4bc53d7ca2a8eedee49e4a92479b4b530e"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@osdl.org",
        "time": "Thu Oct 19 23:28:16 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Oct 20 10:26:35 2006 -0700"
      },
      "message": "[PATCH] separate bdi congestion functions from queue congestion functions\n\nSeparate out the concept of \"queue congestion\" from \"backing-dev congestion\".\nCongestion is a backing-dev concept, not a queue concept.\n\nThe blk_* congestion functions are retained, as wrappers around the core\nbacking-dev congestion functions.\n\nThis proper layering is needed so that NFS can cleanly use the congestion\nfunctions, and so that CONFIG_BLOCK\u003dn actually links.\n\nCc: \"Thomas Maier\" \u003cbalagi@justmail.de\u003e\nCc: \"Jens Axboe\" \u003cjens.axboe@oracle.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Peter Osterlund \u003cpetero2@telia.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "91828a405ae454a9503c41a7744f6ff877a80714",
      "tree": "aa1f051da60f320675a970ad304a9987ca1d7ce3",
      "parents": [
        "5c496374a72320279ddb86291ef709e090a5d531"
      ],
      "author": {
        "name": "David M. Grimes",
        "email": "dgrimes@navisite.com",
        "time": "Tue Oct 17 00:09:45 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Oct 17 08:18:43 2006 -0700"
      },
      "message": "[PATCH] knfsd: add nfs-export support to tmpfs\n\nWe need to encode a decode the \u0027file\u0027 part of a handle.  We simply use the\ninode number and generation number to construct the filehandle.\n\nThe generation number is the time when the file was created.  As inode numbers\ncycle through the full 32 bits before being reused, there is no real chance of\nthe same inum being allocated to different files in the same second so this is\nsuitably unique.  Using time-of-day rather than e.g.  jiffies makes it less\nlikely that the same filehandle can be created after a reboot.\n\nIn order to be able to decode a filehandle we need to be able to lookup by\ninum, which means that the inode needs to be added to the inode hash table\n(tmpfs doesn\u0027t currently hash inodes as there is never a need to lookup by\ninum).  To avoid overhead when not exporting, we only hash an inode when it is\nfirst exported.  This requires a lock to ensure it isn\u0027t hashed twice.\n\nThis code is separate from the patch posted in June06 from Atal Shargorodsky\nwhich provided the same functionality, but does borrow slightly from it.\n\nLocking comment: Most filesystems that hash their inodes do so at the point\nwhere the \u0027struct inode\u0027 is initialised, and that has suitable locking\n(I_NEW).  Here in shmem, we are hashing the inode later, the first time we\nneed an NFS file handle for it.  We no longer have I_NEW to ensure only one\nthread tries to add it to the hash table.\n\nCc: Atal Shargorodsky \u003catal@codefidence.com\u003e\nCc: Gilad Ben-Yossef \u003cgilad@codefidence.com\u003e\nSigned-off-by: David M. Grimes \u003cdgrimes@navisite.com\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d8c76e6f45c111c32a4b3e50a2adc9210737b0d8",
      "tree": "25521b59d48c6d8c9aec1af54dbe5008ad4b215b",
      "parents": [
        "9a53c3a783c2fa9b969628e65695c11c3e51e673"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Sep 30 23:29:04 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Oct 01 00:39:30 2006 -0700"
      },
      "message": "[PATCH] r/o bind mount prepwork: inc_nlink() helper\n\nThis is mostly included for parity with dec_nlink(), where we will have some\nmore hooks.  This one should stay pretty darn straightforward for now.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "9a53c3a783c2fa9b969628e65695c11c3e51e673",
      "tree": "5a6115e18ee105246d46e3db3d5b07749d232f5b",
      "parents": [
        "aab520e2f6c80160cabd187a8d0292d1cec8ff68"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Sep 30 23:29:03 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Oct 01 00:39:30 2006 -0700"
      },
      "message": "[PATCH] r/o bind mounts: unlink: monitor i_nlink\n\nWhen a filesystem decrements i_nlink to zero, it means that a write must be\nperformed in order to drop the inode from the filesystem.\n\nWe\u0027re shortly going to have keep filesystems from being remounted r/o between\nthe time that this i_nlink decrement and that write occurs.\n\nSo, add a little helper function to do the decrements.  We\u0027ll tie into it in a\nbit to note when i_nlink hits zero.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "39f0247d3823e4e0bf8f6838a10362864b1e1053",
      "tree": "f5808b2bb5fd719c42c7068e2dc43a4b8f402304",
      "parents": [
        "f0c8bd164e1a0585d7e46896553136b4f488bd19"
      ],
      "author": {
        "name": "Andreas Gruenbacher",
        "email": "agruen@suse.de",
        "time": "Fri Sep 29 02:01:35 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 29 09:18:24 2006 -0700"
      },
      "message": "[PATCH] Access Control Lists for tmpfs\n\nAdd access control lists for tmpfs.\n\nSigned-off-by: Andreas Gruenbacher \u003cagruen@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "ba52de123d454b57369f291348266d86f4b35070",
      "tree": "3973f3f3c853b5857b6b64a027cadd4fe954e3b9",
      "parents": [
        "577c4eb09d1034d0739e3135fd2cff50588024be"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Wed Sep 27 01:50:49 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Sep 27 08:26:18 2006 -0700"
      },
      "message": "[PATCH] inode-diet: Eliminate i_blksize from the inode structure\n\nThis eliminates the i_blksize field from struct inode.  Filesystems that want\nto provide a per-inode st_blksize can do so by providing their own getattr\nroutine instead of using the generic_fillattr() function.\n\nNote that some filesystems were providing pretty much random (and incorrect)\nvalues for i_blksize.\n\n[bunk@stusta.de: cleanup]\n[akpm@osdl.org: generic_fillattr() fix]\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1a1d92c10dd24bbdc28b3d6e2d03ec199dd3a65b",
      "tree": "fade83955f75e718e39153d6f81d221403338bed",
      "parents": [
        "f52720ca5f48574e347dff35ffe6b389ace61537"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Wed Sep 27 01:49:40 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Sep 27 08:26:10 2006 -0700"
      },
      "message": "[PATCH] Really ignore kmem_cache_destroy return value\n\n* Rougly half of callers already do it by not checking return value\n* Code in drivers/acpi/osl.c does the following to be sure:\n\n\t(void)kmem_cache_destroy(cache);\n\n* Those who check it printk something, however, slab_error already printed\n  the name of failed cache.\n* XFS BUGs on failed kmem_cache_destroy which is not the decision\n  low-level filesystem driver should make. Converted to ignore.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "c1f60a5a419cc60aff27daffb150f5a3a3a79ef4",
      "tree": "8ae176462d6f220cd744ae6c3454113eebda02a8",
      "parents": [
        "182e8e237349e7b6354f45aee4780b6423fd6a50"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Sep 25 23:31:11 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Sep 26 08:48:46 2006 -0700"
      },
      "message": "[PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h\n\nMove totalhigh_pages and nr_free_highpages() into highmem.c/.h\n\nMove the totalhigh_pages definition into highmem.c/.h.  Move the\nnr_free_highpages function into highmem.c\n\n[yoichi_yuasa@tripeaks.co.jp: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Yoichi Yuasa \u003cyoichi_yuasa@tripeaks.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "22a3e233ca08a2ddc949ba1ae8f6e16ec7ef1a13",
      "tree": "7ef158ba2c30e0dde2dc103d1904fae243759a6b",
      "parents": [
        "39302175c26d74be35715c05a0f342c9e64c21bf",
        "6ab3d5624e172c553004ecc862bfeac16d9d68b7"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 30 15:39:30 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 30 15:39:30 2006 -0700"
      },
      "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:\n  Remove obsolete #include \u003clinux/config.h\u003e\n  remove obsolete swsusp_encrypt\n  arch/arm26/Kconfig typos\n  Documentation/IPMI typos\n  Kconfig: Typos in net/sched/Kconfig\n  v9fs: do not include linux/version.h\n  Documentation/DocBook/mtdnand.tmpl: typo fixes\n  typo fixes: specfic -\u003e specific\n  typo fixes in Documentation/networking/pktgen.txt\n  typo fixes: occuring -\u003e occurring\n  typo fixes: infomation -\u003e information\n  typo fixes: disadvantadge -\u003e disadvantage\n  typo fixes: aquire -\u003e acquire\n  typo fixes: mecanism -\u003e mechanism\n  typo fixes: bandwith -\u003e bandwidth\n  fix a typo in the RTC_CLASS help text\n  smb is no longer maintained\n\nManually merged trivial conflict in arch/um/kernel/vmlinux.lds.S\n"
    },
    {
      "commit": "f8891e5e1f93a128c3900f82035e8541357896a7",
      "tree": "97b078ac97970962b17c85d39fd64cb48dc01168",
      "parents": [
        "ca889e6c45e0b112cb2ca9d35afc66297519b5d5"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 30 01:55:45 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 30 11:25:36 2006 -0700"
      },
      "message": "[PATCH] Light weight event counters\n\nThe remaining counters in page_state after the zoned VM counter patches\nhave been applied are all just for show in /proc/vmstat.  They have no\nessential function for the VM.\n\nWe use a simple increment of per cpu variables.  In order to avoid the most\nsevere races we disable preempt.  Preempt does not prevent the race between\nan increment and an interrupt handler incrementing the same statistics\ncounter.  However, that race is exceedingly rare, we may only loose one\nincrement or so and there is no requirement (at least not in kernel) that\nthe vm event counters have to be accurate.\n\nIn the non preempt case this results in a simple increment for each\ncounter.  For many architectures this will be reduced by the compiler to a\nsingle instruction.  This single instruction is atomic for i386 and x86_64.\n And therefore even the rare race condition in an interrupt is avoided for\nboth architectures in most cases.\n\nThe patchset also adds an off switch for embedded systems that allows a\nbuilding of linux kernels without these counters.\n\nThe implementation of these counters is through inline code that hopefully\nresults in only a single instruction increment instruction being emitted\n(i386, x86_64) or in the increment being hidden though instruction\nconcurrency (EPIC architectures such as ia64 can get that done).\n\nBenefits:\n- VM event counter operations usually reduce to a single inline instruction\n  on i386 and x86_64.\n- No interrupt disable, only preempt disable for the preempt case.\n  Preempt disable can also be avoided by moving the counter into a spinlock.\n- Handling is similar to zoned VM counters.\n- Simple and easily extendable.\n- Can be omitted to reduce memory use for embedded use.\n\nReferences:\n\nRFC http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113512330605497\u0026w\u003d2\nRFC http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114988082814934\u0026w\u003d2\nlocal_t http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114991748606690\u0026w\u003d2\nV2 http://marc.theaimsgroup.com/?t\u003d115014808400007\u0026r\u003d1\u0026w\u003d2\nV3 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115024767022346\u0026w\u003d2\nV4 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115047968808926\u0026w\u003d2\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "6ab3d5624e172c553004ecc862bfeac16d9d68b7",
      "tree": "6d98881fe91fd9583c109208d5c27131b93fa248",
      "parents": [
        "e02169b682bc448ccdc819dc8639ed34a23cedd8"
      ],
      "author": {
        "name": "Jörn Engel",
        "email": "joern@wohnheim.fh-wedel.de",
        "time": "Fri Jun 30 19:25:36 2006 +0200"
      },
      "committer": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Fri Jun 30 19:25:36 2006 +0200"
      },
      "message": "Remove obsolete #include \u003clinux/config.h\u003e\n\nSigned-off-by: Jörn Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n"
    },
    {
      "commit": "602cada851b28c5792339786efe872fbdc1f5d41",
      "tree": "233d474b74d6038b5bb54a07ad91dd1bb10b0218",
      "parents": [
        "82991c6f2c361acc17279b8124d9bf1878973435",
        "fee68d1cc0d9bd863e51c16cdcd707737b16bb38"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Thu Jun 29 14:19:21 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Thu Jun 29 14:19:21 2006 -0700"
      },
      "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)\n  [PATCH] devfs: Remove it from the feature_removal.txt file\n  [PATCH] devfs: Last little devfs cleanups throughout the kernel tree.\n  [PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV\n  [PATCH] devfs: Remove the tty_driver devfs_name field as it\u0027s no longer needed\n  [PATCH] devfs: Remove the line_driver devfs_name field as it\u0027s no longer needed\n  [PATCH] devfs: Remove the videodevice devfs_name field as it\u0027s no longer needed\n  [PATCH] devfs: Remove the gendisk devfs_name field as it\u0027s no longer needed\n  [PATCH] devfs: Remove the miscdevice devfs_name field as it\u0027s no longer needed\n  [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree\n  [PATCH] devfs: Remove devfs_remove() function from the kernel tree\n  [PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree\n  [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree\n  [PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree\n  [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree\n  [PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree\n  [PATCH] devfs: Remove devfs support from the sound subsystem\n  [PATCH] devfs: Remove devfs support from the ide subsystem.\n  [PATCH] devfs: Remove devfs support from the serial subsystem\n  [PATCH] devfs: Remove devfs from the init code\n  [PATCH] devfs: Remove devfs from the partition code\n  ...\n"
    },
    {
      "commit": "f5e54d6e53a20cef45af7499e86164f0e0d16bb2",
      "tree": "cb92acbb89b84796261bf5563182261ec5654127",
      "parents": [
        "a052b68b1e7a31f1e6a721290035e9deb0f6fed9"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Wed Jun 28 04:26:44 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Jun 28 14:59:04 2006 -0700"
      },
      "message": "[PATCH] mark address_space_operations const\n\nSame as with already do with the file operations: keep them in .rodata and\nprevents people from doing runtime patching.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "ff23eca3e8f613034e0d20ff86f6a89b62f5a14e",
      "tree": "826285f5daa660001d38cac6baaf34411fd40131",
      "parents": [
        "8ab5e4c15b53e147c08031a959d9f776823dbe73"
      ],
      "author": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Mon Jun 20 21:15:16 2005 -0700"
      },
      "committer": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Mon Jun 26 12:25:08 2006 -0700"
      },
      "message": "[PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree\n\nAlso fixes up all files that #include it.\n\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n"
    },
    {
      "commit": "95dc112a5770dc670a1b45a3d9ee346fdd2b2697",
      "tree": "899cd99bdc928ade94ddc7b003b0de7d275cac48",
      "parents": [
        "0e6c62da7cd929b0389fc4a7e41464bb738647dc"
      ],
      "author": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Mon Jun 20 21:15:16 2005 -0700"
      },
      "committer": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Mon Jun 26 12:25:06 2006 -0700"
      },
      "message": "[PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree\n\nRemoves the devfs_mk_dir() function and all callers of it.\n\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n"
    },
    {
      "commit": "816724e65c72a90a44fbad0ef0b59b186c85fa90",
      "tree": "421fa29aedff988e392f92780637553e275d37a0",
      "parents": [
        "70ac4385a13f78bc478f26d317511893741b05bd",
        "d384ea691fe4ea8c2dd5b9b8d9042eb181776f18"
      ],
      "author": {
        "name": "Trond Myklebust",
        "email": "Trond.Myklebust@netapp.com",
        "time": "Sat Jun 24 08:41:41 2006 -0400"
      },
      "committer": {
        "name": "Trond Myklebust",
        "email": "Trond.Myklebust@netapp.com",
        "time": "Sat Jun 24 13:07:53 2006 -0400"
      },
      "message": "Merge branch \u0027master\u0027 of /home/trondmy/kernel/linux-2.6/\n\nConflicts:\n\n\tfs/nfs/inode.c\n\tfs/super.c\n\nFix conflicts between patch \u0027NFS: Split fs/nfs/inode.c\u0027 and patch\n\u0027VFS: Permit filesystem to override root dentry on mount\u0027\n"
    },
    {
      "commit": "3c5a87f476bed45616e7e543dcaea4440c77bf93",
      "tree": "0ff4c86ef594f7bfad9937095b69aab5e70b4174",
      "parents": [
        "4776874ff096cd410382c0eca5d75f69c9dfa58f"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:08 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:46 2006 -0700"
      },
      "message": "[PATCH] migration: remove unnecessary PageSwapCache checks\n\nRemove two unnecessary PageSwapCache checks.  The page refcount is raised\nand therefore page migration cannot occur in both functions.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "726c334223180e3c0197cc980a432681370d4baf",
      "tree": "8327b354bb3dc959a6606051ae6f8d4d035e38a2",
      "parents": [
        "454e2398be9b9fa30433fccc548db34d19aa9958"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Jun 23 02:02:58 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:45 2006 -0700"
      },
      "message": "[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry\n\nGive the statfs superblock operation a dentry pointer rather than a superblock\npointer.\n\nThis complements the get_sb() patch.  That reduced the significance of\nsb-\u003es_root, allowing NFS to place a fake root there.  However, NFS does\nrequire a dentry to use as a target for the statfs operation.  This permits\nthe root in the vfsmount to be used instead.\n\nlinux/mount.h has been added where necessary to make allyesconfig build\nsuccessfully.\n\nInterest has also been expressed for use with the FUSE and XFS filesystems.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Nathan Scott \u003cnathans@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "454e2398be9b9fa30433fccc548db34d19aa9958",
      "tree": "1f61cb0c3716a33b661cfc8977e9beeb480a322c",
      "parents": [
        "1ad5544098a69d7dc1fa508cbb17e13a7a952fd8"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Jun 23 02:02:57 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:45 2006 -0700"
      },
      "message": "[PATCH] VFS: Permit filesystem to override root dentry on mount\n\nExtend the get_sb() filesystem operation to take an extra argument that\npermits the VFS to pass in the target vfsmount that defines the mountpoint.\n\nThe filesystem is then required to manually set the superblock and root dentry\npointers.  For most filesystems, this should be done with simple_set_mnt()\nwhich will set the superblock pointer and then set the root dentry to the\nsuperblock\u0027s s_root (as per the old default behaviour).\n\nThe get_sb() op now returns an integer as there\u0027s now no need to return the\nsuperblock pointer.\n\nThis patch permits a superblock to be implicitly shared amongst several mount\npoints, such as can be done with NFS to avoid potential inode aliasing.  In\nsuch a case, simple_set_mnt() would not be called, and instead the mnt_root\nand mnt_sb would be set directly.\n\nThe patch also makes the following changes:\n\n (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount\n     pointer argument and return an integer, so most filesystems have to change\n     very little.\n\n (*) If one of the convenience function is not used, then get_sb() should\n     normally call simple_set_mnt() to instantiate the vfsmount. This will\n     always return 0, and so can be tail-called from get_sb().\n\n (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the\n     dcache upon superblock destruction rather than shrink_dcache_anon().\n\n     This is required because the superblock may now have multiple trees that\n     aren\u0027t actually bound to s_root, but that still need to be cleaned up. The\n     currently called functions assume that the whole tree is rooted at s_root,\n     and that anonymous dentries are not the roots of trees which results in\n     dentries being left unculled.\n\n     However, with the way NFS superblock sharing are currently set to be\n     implemented, these assumptions are violated: the root of the filesystem is\n     simply a dummy dentry and inode (the real inode for \u0027/\u0027 may well be\n     inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries\n     with child trees.\n\n     [*] Anonymous until discovered from another tree.\n\n (*) The documentation has been adjusted, including the additional bit of\n     changing ext2_* into foo_* in the documentation.\n\n[akpm@osdl.org: convert ipath_fs, do other stuff]\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Nathan Scott \u003cnathans@sgi.com\u003e\nCc: Roland Dreier \u003crolandd@cisco.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d59bf96cdde5b874a57bfd1425faa45da915d0b7",
      "tree": "351a40b72514d620e5bebea2de38c26f23277ffc",
      "parents": [
        "28df955a2ad484d602314b30183ea8496a9aa34a",
        "25f42b6af09e34c3f92107b36b5aa6edc2fdba2f"
      ],
      "author": {
        "name": "Trond Myklebust",
        "email": "Trond.Myklebust@netapp.com",
        "time": "Tue Jun 20 08:59:45 2006 -0400"
      },
      "committer": {
        "name": "Trond Myklebust",
        "email": "Trond.Myklebust@netapp.com",
        "time": "Tue Jun 20 08:59:45 2006 -0400"
      },
      "message": "Merge branch \u0027master\u0027 of /home/trondmy/kernel/linux-2.6/\n"
    },
    {
      "commit": "86bc843a268058df558844b6bf64531617fbc698",
      "tree": "159a320d16495b1328aa6c7822ebbb79c5375da7",
      "parents": [
        "cfd95a9cf58cd9e92d4c23b5ee20b07a3d121477"
      ],
      "author": {
        "name": "Sergey Vlasov",
        "email": "vsu@altlinux.ru",
        "time": "Mon Jun 12 21:53:23 2006 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Jun 12 14:29:04 2006 -0700"
      },
      "message": "[PATCH] tmpfs: Decrement i_nlink correctly in shmem_rmdir()\n\nshmem_rmdir() must undo the increment of i_nlink done in\nshmem_get_inode() for directories, otherwise at least\nIN_DELETE_SELF inotify event generation is broken.\n\nSigned-off-by: Sergey Vlasov \u003cvsu@altlinux.ru\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "cfd95a9cf58cd9e92d4c23b5ee20b07a3d121477",
      "tree": "446977d54fcf1f9e3a5c3c2f6aea1f1b1ac2f806",
      "parents": [
        "5f856e8bdcf5936c9c13cb251dae770e6eeb06b6"
      ],
      "author": {
        "name": "Robin H. Johnson",
        "email": "robbat2@gentoo.org",
        "time": "Mon Jun 12 21:50:25 2006 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Jun 12 13:55:52 2006 -0700"
      },
      "message": "[PATCH] tmpfs: time granularity fix for [acm]time going backwards\n\nI noticed a strange behavior in a tmpfs file system the other day, while\nbuilding packages - occasionally, and seemingly at random, make decided to\nrebuild a target. However, only on tmpfs.\n\nA file would be created, and if checked, it had a sub-second timestamp.\nHowever, after an utimes related call where sub-seconds should be set, they\nwere zeroed instead. In the case that a file was created, and utimes(...,NULL)\nwas used on it in the same second, the timestamp on the file moved backwards.\n\nAfter some digging, I found that this was being caused by tmpfs not having a\ntime granularity set, thus inheriting the default 1 second granularity.\n\nHugh adds: yes, we missed tmpfs when the s_time_gran mods went into 2.6.11.\nUnfortunately, the granularity of CURRENT_TIME, often used in filesystems,\ndoes not match the default granularity set by alloc_super.  A few more such\ndiscrepancies have been found, but this is the most important to fix now.\n\nSigned-off-by: Robin H. Johnson \u003crobbat2@gentoo.org\u003e\nAcked-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1f5ce9e93aa96a867f195ed45f6f77935175f12e",
      "tree": "caa9b6635990f69d47c1729524bd127e968b23f5",
      "parents": [
        "bb4a58bf46473e3e83d84054bbc110db3a0f85e4"
      ],
      "author": {
        "name": "Trond Myklebust",
        "email": "Trond.Myklebust@netapp.com",
        "time": "Fri Jun 09 09:34:16 2006 -0400"
      },
      "committer": {
        "name": "Trond Myklebust",
        "email": "Trond.Myklebust@netapp.com",
        "time": "Fri Jun 09 09:34:16 2006 -0400"
      },
      "message": "VFS: Unexport do_kern_mount() and clean up simple_pin_fs()\n\nReplace all module uses with the new vfs_kern_mount() interface, and fix up\nsimple_pin_fs().\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n"
    },
    {
      "commit": "304dbdb7a4fbb7f40a6ad5c5836fdd456c233c63",
      "tree": "2bdd71bb0ab19422362e9d3999f975ae27206965",
      "parents": [
        "3b5fd59fdd2e656dd4d10f2cedb41a7519b131b2"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "Lee.Schermerhorn@hp.com",
        "time": "Sat Apr 22 02:35:48 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Apr 22 09:19:52 2006 -0700"
      },
      "message": "[PATCH] add migratepage address space op to shmem\n\nBasic problem: pages of a shared memory segment can only be migrated once.\n\nIn 2.6.16 through 2.6.17-rc1, shared memory mappings do not have a\nmigratepage address space op.  Therefore, migrate_pages() falls back to\ndefault processing.  In this path, it will try to pageout() dirty pages.\nOnce a shared memory page has been migrated it becomes dirty, so\nmigrate_pages() will try to page it out.  However, because the page count\nis 3 [cache + current + pte], pageout() will return PAGE_KEEP because\nis_page_cache_freeable() returns false.  This will abort all subsequent\nmigrations.\n\nThis patch adds a migratepage address space op to shared memory segments to\navoid taking the default path.  We use the \"migrate_page()\" function\nbecause it knows how to migrate dirty pages.  This allows shared memory\nsegment pages to migrate, subject to other conditions such as # pte\u0027s\nreferencing the page [page_mapcount(page)], when requested.\n\nI think this is safe.  If we\u0027re migrating a shared memory page, then we\nfound the page via a page table, so it must be in memory.\n\nCan be verified with memtoy and the shmem-mbind-test script, both\navailable at:  http://free.linux.hp.com/~lts/Tools/\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d15c023b44e5d323f1f4130b85d29f08e43433b1",
      "tree": "f7153643b876b25f66e6e33ab2bbc670ba05a7f7",
      "parents": [
        "6e5ef1a96e6e3b123da56292bc35017c8c401491"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Wed Mar 22 00:08:46 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Mar 22 07:54:02 2006 -0800"
      },
      "message": "[PATCH] shmem: inline to avoid warning\n\nshmem.c was named and shamed in Jesper\u0027s \"Building 100 kernels\" warnings:\nshmem_parse_mpol is only used when CONFIG_TMPFS parses mount options; and\nonly called from that one site, so mark it inline like its non-NUMA stub.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "fcc234f888ba2365c44ba0507eb8a18eebf1f594",
      "tree": "afc0d6f5a6191a94d8285f0b21ecec5a9b911df9",
      "parents": [
        "b5d8ca7c50826c0b456b4a646875dc573adfde2b"
      ],
      "author": {
        "name": "Pekka Enberg",
        "email": "penberg@cs.helsinki.fi",
        "time": "Wed Mar 22 00:08:13 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Mar 22 07:53:58 2006 -0800"
      },
      "message": "[PATCH] mm: kill kmem_cache_t usage\n\nWe have struct kmem_cache now so use it instead of the old typedef.\n\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "b00dc3ad74fdb676552d46ee573b88e927240d0c",
      "tree": "6dcf7806f1f0fc791d3455dcf233a11088b18b3a",
      "parents": [
        "808c783e9bfb217a90be5a996a867c41a69b40bd"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Tue Feb 21 23:49:47 2006 +0000"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Feb 21 17:10:15 2006 -0800"
      },
      "message": "[PATCH] tmpfs: fix mount mpol nodelist parsing\n\nI\u0027ve been dissatisfied with the mpol_nodelist mount option which was\nadded to tmpfs earlier in -rc.  Replace it by mpol\u003dpolicy:nodelist.\n\nAnd it was broken: a nodelist is a comma-separated list of numbers and\nranges; the mount options are a comma-separated list of token\u003dvalues.\nWhoops, blindly strsep\u0027ing on commas doesn\u0027t work so well: since we\u0027ve\nno numeric tokens, and unlikely to add them, use that to distinguish.\n\nMove the mpol\u003d parsing to shmem_parse_mpol under CONFIG_NUMA, reject\nall its options as invalid if not NUMA.  /proc shows MPOL_PREFERRED\nas \"prefer\", so use that name for the policy instead of \"preferred\".\n\nEnforce that mpol\u003ddefault has no nodelist; that mpol\u003dprefer has one\nnode only; that mpol\u003dbind has a nodelist; but let mpol\u003dinterleave use\nnode_online_map if no nodelist given.  Describe this in tmpfs.txt.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Robin Holt \u003cholt@sgi.com\u003e\nAcked-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "b16664e44c54525be89dc07ad15a13b4eeec5634",
      "tree": "1844d193009c1e55e3c26256feb14bc622ec9af3",
      "parents": [
        "2a16e3f4b0c408b9e50297d2ec27e295d490267a"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Wed Feb 01 03:05:36 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Feb 01 08:53:16 2006 -0800"
      },
      "message": "[PATCH] Direct Migration V9: PageSwapCache checks\n\nCheck for PageSwapCache after looking up and locking a swap page.\n\nThe page migration code may change a swap pte to point to a different page\nunder lock_page().\n\nIf that happens then the vm must retry the lookup operation in the swap space\nto find the correct page number.  There are a couple of locations in the VM\nwhere a lock_page() is done on a swap page.  In these locations we need to\ncheck afterwards if the page was migrated.  If the page was migrated then the\nold page that was looked up before was freed and no longer has the\nPageSwapCache bit set.\n\nSigned-off-by: Hirokazu Takahashi \u003ctaka@valinux.co.jp\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "7339ff8302fd70aabf5f1ae26e0c4905fa74a495",
      "tree": "38ee561d51b7e4db7c0d6dd9ebd9fc22c2b6ab88",
      "parents": [
        "852cf918dcf2ae46468b425e679fbcbf0ea8fdbb"
      ],
      "author": {
        "name": "Robin Holt",
        "email": "holt@sgi.com",
        "time": "Sat Jan 14 13:20:48 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Jan 14 18:27:07 2006 -0800"
      },
      "message": "[PATCH] Add tmpfs options for memory placement policies\n\nAnything that writes into a tmpfs filesystem is liable to disproportionately\ndecrease the available memory on a particular node.  Since there\u0027s no telling\nwhat sort of application (e.g.  dd/cp/cat) might be dropping large files\nthere, this lets the admin choose the appropriate default behavior for their\nsite\u0027s situation.\n\nIntroduce a tmpfs mount option which allows specifying a memory policy and\na second option to specify the nodelist for that policy.  With the default\npolicy, tmpfs will behave as it does today.  This patch adds support for\npreferred, bind, and interleave policies.\n\nThe default policy will cause pages to be added to tmpfs files on the node\nwhich is doing the writing.  Some jobs expect a single process to create\nand manage the tmpfs files.  This results in a node which has a\nsignificantly reduced number of free pages.\n\nWith this patch, the administrator can specify the policy and nodes for\nthat policy where they would prefer allocations.\n\nThis patch was originally written by Brent Casavant and Hugh Dickins.  I\nadded support for the bind and preferred policies and the mpol_nodelist\nmount option.\n\nSigned-off-by: Brent Casavant \u003cbcasavan@sgi.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1b1dcc1b57a49136f118a0f16367256ff9994a69",
      "tree": "b0b36d4f41d28c9d6514fb309d33c1a084d6309b",
      "parents": [
        "794ee1baee1c26be40410233e6c20bceb2b03c08"
      ],
      "author": {
        "name": "Jes Sorensen",
        "email": "jes@sgi.com",
        "time": "Mon Jan 09 15:59:24 2006 -0800"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@hera.kernel.org",
        "time": "Mon Jan 09 15:59:24 2006 -0800"
      },
      "message": "[PATCH] mutex subsystem, semaphore to mutex: VFS, -\u003ei_sem\n\nThis patch converts the inode semaphore to a mutex. I have tested it on\nXFS and compiled as much as one can consider on an ia64. Anyway your\nluck with it might be different.\n\nModified-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n(finished the conversion)\n\nSigned-off-by: Jes Sorensen \u003cjes@sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "b0e15190ead07056ab0c3844a499ff35e66d27cc",
      "tree": "0601a8d68fa051a7ee85d22640e982c0a64f0efc",
      "parents": [
        "642fb4d1f1dd2417aa69189fe5ceb81e4fb72900"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Jan 06 00:11:42 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jan 06 08:33:32 2006 -0800"
      },
      "message": "[PATCH] NOMMU: Make SYSV IPC SHM use ramfs facilities on NOMMU\n\nThe attached patch makes the SYSV IPC shared memory facilities use the new\nramfs facilities on a no-MMU kernel.\n\nThe following changes are made:\n\n (1) There are now shmem_mmap() and shmem_get_unmapped_area() functions to\n     allow the IPC SHM facilities to commune with the tiny-shmem and shmem\n     code.\n\n (2) ramfs files now need resizing using do_truncate() rather than by modifying\n     the inode size directly (see shmem_file_setup()). This causes ramfs to\n     attempt to bind a block of pages of sufficient size to the inode.\n\n (3) CONFIG_SYSVIPC is no longer contingent on CONFIG_MMU.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "f6b3ec238d12c8cc6cc71490c6e3127988460349",
      "tree": "b395c1054802760b0e938199231a9de9ac2f358a",
      "parents": [
        "d7339071f6a8b50101d7ba327926b770f22d5d8b"
      ],
      "author": {
        "name": "Badari Pulavarty",
        "email": "pbadari@us.ibm.com",
        "time": "Fri Jan 06 00:10:38 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jan 06 08:33:22 2006 -0800"
      },
      "message": "[PATCH] madvise(MADV_REMOVE): remove pages from tmpfs shm backing store\n\nHere is the patch to implement madvise(MADV_REMOVE) - which frees up a\ngiven range of pages \u0026 its associated backing store.  Current\nimplementation supports only shmfs/tmpfs and other filesystems return\n-ENOSYS.\n\n\"Some app allocates large tmpfs files, then when some task quits and some\nclient disconnect, some memory can be released.  However the only way to\nrelease tmpfs-swap is to MADV_REMOVE\". - Andrea Arcangeli\n\nDatabases want to use this feature to drop a section of their bufferpool\n(shared memory segments) - without writing back to disk/swap space.\n\nThis feature is also useful for supporting hot-plug memory on UML.\n\nConcerns raised by Andrew Morton:\n\n- \"We have no plan for holepunching!  If we _do_ have such a plan (or\n  might in the future) then what would the API look like?  I think\n  sys_holepunch(fd, start, len), so we should start out with that.\"\n\n- Using madvise is very weird, because people will ask \"why do I need to\n  mmap my file before I can stick a hole in it?\"\n\n- None of the other madvise operations call into the filesystem in this\n  manner.  A broad question is: is this capability an MM operation or a\n  filesytem operation?  truncate, for example, is a filesystem operation\n  which sometimes has MM side-effects.  madvise is an mm operation and with\n  this patch, it gains FS side-effects, only they\u0027re really, really\n  significant ones.\"\n\nComments:\n\n- Andrea suggested the fs operation too but then it\u0027s more efficient to\n  have it as a mm operation with fs side effects, because they don\u0027t\n  immediatly know fd and physical offset of the range.  It\u0027s possible to\n  fixup in userland and to use the fs operation but it\u0027s more expensive,\n  the vmas are already in the kernel and we can use them.\n\nShort term plan \u0026  Future Direction:\n\n- We seem to need this interface only for shmfs/tmpfs files in the short\n  term.  We have to add hooks into the filesystem for correctness and\n  completeness.  This is what this patch does.\n\n- In the future, plan is to support both fs and mmap apis also.  This\n  also involves (other) filesystem specific functions to be implemented.\n\n- Current patch doesn\u0027t support VM_NONLINEAR - which can be addressed in\n  the future.\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Andrea Arcangeli \u003candrea@suse.de\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "994fc28c7b1e697ac56befe4aecabf23f0689f46",
      "tree": "da36d162e9bd077e9b5be385b28e2db90475c263",
      "parents": [
        "7063fbf2261194f72ee75afca67b3b38b554b5fa"
      ],
      "author": {
        "name": "Zach Brown",
        "email": "zach.brown@oracle.com",
        "time": "Thu Dec 15 14:28:17 2005 -0800"
      },
      "committer": {
        "name": "Joel Becker",
        "email": "joel.becker@oracle.com",
        "time": "Tue Jan 03 11:45:42 2006 -0800"
      },
      "message": "[PATCH] add AOP_TRUNCATED_PAGE, prepend AOP_ to WRITEPAGE_ACTIVATE\n\nreadpage(), prepare_write(), and commit_write() callers are updated to\nunderstand the special return code AOP_TRUNCATED_PAGE in the style of\nwritepage() and WRITEPAGE_ACTIVATE.  AOP_TRUNCATED_PAGE tells the caller that\nthe callee has unlocked the page and that the operation should be tried again\nwith a new page.  OCFS2 uses this to detect and work around a lock inversion in\nits aop methods.  There should be no change in behaviour for methods that don\u0027t\nreturn AOP_TRUNCATED_PAGE.\n\nWRITEPAGE_ACTIVATE is also prepended with AOP_ for consistency and they are\nmade enums so that kerneldoc can be used to document their semantics.\n\nSigned-off-by: Zach Brown \u003czach.brown@oracle.com\u003e\n"
    },
    {
      "commit": "4c21e2f2441dc5fbb957b030333f5a3f2d02dea7",
      "tree": "1f76d33bb1d76221c6424bc5fed080a4f91349a6",
      "parents": [
        "b38c6845b695141259019e2b7c0fe6c32a6e720d"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Sat Oct 29 18:16:40 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Oct 29 21:40:42 2005 -0700"
      },
      "message": "[PATCH] mm: split page table lock\n\nChristoph Lameter demonstrated very poor scalability on the SGI 512-way, with\na many-threaded application which concurrently initializes different parts of\na large anonymous area.\n\nThis patch corrects that, by using a separate spinlock per page table page, to\nguard the page table entries in that page, instead of using the mm\u0027s single\npage_table_lock.  (But even then, page_table_lock is still used to guard page\ntable allocation, and anon_vma allocation.)\n\nIn this implementation, the spinlock is tucked inside the struct page of the\npage table page: with a BUILD_BUG_ON in case it overflows - which it would in\nthe case of 32-bit PA-RISC with spinlock debugging enabled.\n\nSplitting the lock is not quite for free: another cacheline access.  Ideally,\nI suppose we would use split ptlock only for multi-threaded processes on\nmulti-cpu machines; but deciding that dynamically would have its own costs.\nSo for now enable it by config, at some number of cpus - since the Kconfig\nlanguage doesn\u0027t support inequalities, let preprocessor compare that with\nNR_CPUS.  But I don\u0027t think it\u0027s worth being user-configurable: for good\ntesting of both split and unsplit configs, split now at 4 cpus, and perhaps\nchange that to 8 later.\n\nThere is a benefit even for singly threaded processes: kswapd can be attacking\none part of the mm while another part is busy faulting.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "b5810039a54e5babf428e9a1e89fc1940fabff11",
      "tree": "835836cb527ec9bd525f93eb7e016f3dfb8c8ae2",
      "parents": [
        "f9c98d0287de42221c624482fd4f8d485c98ab22"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "nickpiggin@yahoo.com.au",
        "time": "Sat Oct 29 18:16:12 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Oct 29 21:40:39 2005 -0700"
      },
      "message": "[PATCH] core remove PageReserved\n\nRemove PageReserved() calls from core code by tightening VM_RESERVED\nhandling in mm/ to cover PageReserved functionality.\n\nPageReserved special casing is removed from get_page and put_page.\n\nAll setting and clearing of PageReserved is retained, and it is now flagged\nin the page_alloc checks to help ensure we don\u0027t introduce any refcount\nbased freeing of Reserved pages.\n\nMAP_PRIVATE, PROT_WRITE of VM_RESERVED regions is tentatively being\ndeprecated.  We never completely handled it correctly anyway, and is be\nreintroduced in future if required (Hugh has a proof of concept).\n\nOnce PageReserved() calls are removed from kernel/power/swsusp.c, and all\narch/ and driver code, the Set and Clear calls, and the PG_reserved bit can\nbe trivially removed.\n\nLast real user of PageReserved is swsusp, which uses PageReserved to\ndetermine whether a struct page points to valid memory or not.  This still\nneeds to be addressed (a generic page_is_ram() should work).\n\nA last caveat: the ZERO_PAGE is now refcounted and managed with rmap (and\nthus mapcounted and count towards shared rss).  These writes to the struct\npage could cause excessive cacheline bouncing on big systems.  There are a\nnumber of ways this could be addressed if it is an issue.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\n\nRefcount bug fix for filemap_xip.c\n\nSigned-off-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "65500d234e74fc4e8f18e1a429bc24e51e75de4a",
      "tree": "2bae8c3622b6537dbd142ba2744c7cc9430d3b69",
      "parents": [
        "7c1fd6b964860cdcf44b6b98d7dcd8cc16a0a26d"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Sat Oct 29 18:15:59 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Oct 29 21:40:37 2005 -0700"
      },
      "message": "[PATCH] mm: page fault handlers tidyup\n\nImpose a little more consistency on the page fault handlers do_wp_page,\ndo_swap_page, do_anonymous_page, do_no_page, do_file_page: why not pass their\narguments in the same order, called the same names?\n\nbreak_cow is all very well, but what it did was inlined elsewhere: easier to\ncompare if it\u0027s brought back into do_wp_page.\n\ndo_file_page\u0027s fallback to do_no_page dates from a time when we were testing\npte_file by using it wherever possible: currently it\u0027s peculiar to nonlinear\nvmas, so just check that.  BUG_ON if not?  Better not, it\u0027s probably page\ntable corruption, so just show the pte: hmm, there\u0027s a pte_ERROR macro, let\u0027s\nuse that for do_wp_page\u0027s invalid pfn too.\n\nHah!  Someone in the ppc64 world noticed pte_ERROR was unused so removed it:\nrestored (and say \"pud\" not \"pmd\" in its pud_ERROR).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "6daa0e28627abf362138244a620a821a9027d816",
      "tree": "5ca9cbc421cc1adf228cdd30cd627bca8be6242c",
      "parents": [
        "af4ca457eaf2d6682059c18463eb106e2ce58198"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri Oct 21 03:18:50 2005 -0400"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Oct 28 08:16:47 2005 -0700"
      },
      "message": "[PATCH] gfp_t: mm/* (easy parts)\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "dd0fc66fb33cd610bc1a5db8a5e232d34879b4d7",
      "tree": "51f96a9db96293b352e358f66032e1f4ff79fafb",
      "parents": [
        "3b0e77bd144203a507eb191f7117d2c5004ea1de"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@ftp.linux.org.uk",
        "time": "Fri Oct 07 07:46:04 2005 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Oct 08 15:00:57 2005 -0700"
      },
      "message": "[PATCH] gfp flags annotations - part 1\n\n - added typedef unsigned int __nocast gfp_t;\n\n - replaced __nocast uses for gfp flags with gfp_t - it gives exactly\n   the same warnings as far as sparse is concerned, doesn\u0027t change\n   generated code (from gcc point of view we replaced unsigned int with\n   typedef) and documents what\u0027s going on far better.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "570bc1c2e5ccdb408081e77507a385dc7ebed7fa",
      "tree": "d00d2df7c93899fa2028128c40961fec46ede471",
      "parents": [
        "ac50960afa31877493add6d941d8402fa879c452"
      ],
      "author": {
        "name": "Stephen Smalley",
        "email": "sds@tycho.nsa.gov",
        "time": "Fri Sep 09 13:01:43 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 09 13:57:28 2005 -0700"
      },
      "message": "[PATCH] tmpfs: Enable atomic inode security labeling\n\nThis patch modifies tmpfs to call the inode_init_security LSM hook to set\nup the incore inode security state for new inodes before the inode becomes\naccessible via the dcache.\n\nAs there is no underlying storage of security xattrs in this case, it is\nnot necessary for the hook to return the (name, value, len) triple to the\ntmpfs code, so this patch also modifies the SELinux hook function to\ncorrectly handle the case where the (name, value, len) pointers are NULL.\n\nThe hook call is needed in tmpfs in order to support proper security\nlabeling of tmpfs inodes (e.g.  for udev with tmpfs /dev in Fedora).  With\nthis change in place, we should then be able to remove the\nsecurity_inode_post_create/mkdir/...  hooks safely.\n\nSigned-off-by: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "fef266580e5cf897a1b63528fc6b1185e2d6bb87",
      "tree": "a432a35914b8a74f0c8c73ca57257c7e609365d3",
      "parents": [
        "e85b565233236a2a833adea73fb2f0e0f8fa2a61"
      ],
      "author": {
        "name": "Mark Fasheh",
        "email": "mark.fasheh@oracle.com",
        "time": "Fri Sep 09 13:01:31 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 09 13:57:27 2005 -0700"
      },
      "message": "[PATCH] update filesystems for new delete_inode behavior\n\nUpdate the file systems in fs/ implementing a delete_inode() callback to\ncall truncate_inode_pages().  One implementation note: In developing this\npatch I put the calls to truncate_inode_pages() at the very top of those\nfilesystems delete_inode() callbacks in order to retain the previous\nbehavior.  I\u0027m guessing that some of those could probably be optimized.\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nAcked-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "6c231b7bab0aa6860cd9da2de8a064eddc34c146",
      "tree": "2a6d9dea348651ec6000b96b99fbf5bd9ccdb228",
      "parents": [
        "39ed3fdeec1290dd246dcf1da6b278566987a084"
      ],
      "author": {
        "name": "Ravikiran G Thirumalai",
        "email": "kiran@scalex86.org",
        "time": "Tue Sep 06 15:17:45 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Sep 07 16:57:33 2005 -0700"
      },
      "message": "[PATCH] Additions to .data.read_mostly section\n\nMark variables which are usually accessed for reads with __readmostly.\n\nSigned-off-by: Alok N Kataria \u003calokk@calsoftinc.com\u003e\nSigned-off-by: Shai Fultheim \u003cshai@scalex86.org\u003e\nSigned-off-by: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "f549d6c18c0e8e6cf1bf0e7a47acc1daf7e2cec1",
      "tree": "40d827736575f2a8c489761599e9a1e5e45005be",
      "parents": [
        "b5bf6c55edf94e9c7fc01724d5b271f78eaf1d3f"
      ],
      "author": {
        "name": "Stephen Smalley",
        "email": "sds@tycho.nsa.gov",
        "time": "Sat Sep 03 15:55:18 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@evo.osdl.org",
        "time": "Mon Sep 05 00:05:52 2005 -0700"
      },
      "message": "[PATCH] Generic VFS fallback for security xattrs\n\nThis patch modifies the VFS setxattr, getxattr, and listxattr code to fall\nback to the security module for security xattrs if the filesystem does not\nsupport xattrs natively.  This allows security modules to export the incore\ninode security label information to userspace even if the filesystem does\nnot provide xattr storage, and eliminates the need to individually patch\nvarious pseudo filesystem types to provide such access.  The patch removes\nthe existing xattr code from devpts and tmpfs as it is then no longer\nneeded.\n\nThe patch restructures the code flow slightly to reduce duplication between\nthe normal path and the fallback path, but this should only have one\nuser-visible side effect - a program may get -EACCES rather than\n-EOPNOTSUPP if policy denied access but the filesystem didn\u0027t support the\noperation anyway.  Note that the post_setxattr hook call is not needed in\nthe fallback case, as the inode_setsecurity hook call handles the incore\ninode security state update directly.  In contrast, we do call fsnotify in\nboth cases.\n\nSigned-off-by: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d44ed4f86892e350f4b16a3489b7e7c1a9bb7ead",
      "tree": "19614a214c186c62ee6c5d3879392f6184f93e5b",
      "parents": [
        "0abf40c1ac3f25d264c019e1cfe155d590defb87"
      ],
      "author": {
        "name": "Paolo \u0027Blaisorblade\u0027 Giarrusso",
        "email": "blaisorblade@yahoo.it",
        "time": "Sat Sep 03 15:54:55 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@evo.osdl.org",
        "time": "Mon Sep 05 00:05:45 2005 -0700"
      },
      "message": "[PATCH] shmem_populate: avoid an useless check, and some comments\n\nEither shmem_getpage returns a failure, or it found a page, or it was told\nit couldn\u0027t do any I/O.  So it\u0027s useless to check nonblock in the else\nbranch.  We could add a BUG() there but I preferred to comment the\noffending function.\n\nThis was taken out from one Ingo Molnar\u0027s old patch I\u0027m resurrecting.\n\nSigned-off-by: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "cc314eef0128a807e50fa03baf2d0abc0647952c",
      "tree": "8e38db1be28006894915273b3f3cb3beaa6efda3",
      "parents": [
        "2fb1e3086df9b454538491fba8121298da37cd23"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Aug 19 18:02:56 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Aug 19 18:02:56 2005 -0700"
      },
      "message": "Fix nasty ncpfs symlink handling bug.\n\nThis bug could cause oopses and page state corruption, because ncpfs\nused the generic page-cache symlink handlign functions.  But those\nfunctions only work if the page cache is guaranteed to be \"stable\", ie a\npage that was installed when the symlink walk was started has to still\nbe installed in the page cache at the end of the walk.\n\nWe could have fixed ncpfs to not use the generic helper routines, but it\nis in many ways much cleaner to instead improve on the symlink walking\nhelper routines so that they don\u0027t require that absolute stability.\n\nWe do this by allowing \"follow_link()\" to return a error-pointer as a\ncookie, which is fed back to the cleanup \"put_link()\" routine.  This\nalso simplifies NFS symlink handling.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "0edd73b33426df61b1d8a0a50d1f2ec097500abb",
      "tree": "edbc6d9b53ebd107befaf53fbefaaf1a55244273",
      "parents": [
        "65ed0b337bd2b47097cf6c772f024772513b7b0d"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Tue Jun 21 17:15:04 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Tue Jun 21 18:46:18 2005 -0700"
      },
      "message": "[PATCH] shmem: restore superblock info\n\nTo improve shmem scalability, we allowed tmpfs instances which don\u0027t need\ntheir blocks or inodes limited not to count them, and not to allocate any\nsbinfo.  Which was okay when the only use for the sbinfo was accounting\nblocks and inodes; but since then a couple of unrelated projects extending\ntmpfs want to store other data in the sbinfo.  Whether either extension\nreaches mainline is beside the point: I\u0027m guilty of a bad design decision,\nand should restore sbinfo to make any such future extensions easier.\n\nSo, once again allocate a shmem_sb_info for every shmem/tmpfs instance, and\nnow let max_blocks 0 indicate unlimited blocks, and max_inodes 0 unlimited\ninodes.  Brent Casavant verified (many months ago) that this does not\nperceptibly impact the scalability (since the unlimited sbinfo cacheline is\nrepeatedly accessed but only once dirtied).\n\nAnd merge shmem_set_size into its sole caller shmem_remount_fs.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    }
  ],
  "next": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
}