)]}' { "log": [ { "commit": "5f4352fbffd6c45123dbce9e195efd54df4e177e", "tree": "e2a0316e2f2d22c266e7cae3015ddc0f2f77f64f", "parents": [ "bdef40a6af64a0140a65df49bf504124d57094a9" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@xensource.com", "time": "Tue Jul 17 18:37:04 2007 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Wed Jul 18 08:47:41 2007 -0700" }, "message": "Allocate and free vmalloc areas\n\nAllocate/release a chunk of vmalloc address space:\n alloc_vm_area reserves a chunk of address space, and makes sure all\n the pagetables are constructed for that address range - but no pages.\n\n free_vm_area releases the address space range.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nSigned-off-by: Ian Pratt \u003cian.pratt@xensource.com\u003e\nSigned-off-by: Christian Limpach \u003cChristian.Limpach@cl.cam.ac.uk\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: \"Jan Beulich\" \u003cJBeulich@novell.com\u003e\nCc: \"Andi Kleen\" \u003cak@muc.de\u003e\n" }, { "commit": "1e66df3ee301209f4a38df097d7cc5cb9b367a3f", "tree": "55beb2a342dbe08c0404f749e02808e3f09023ac", "parents": [ "8b4a40809e5330c9da5d20107d693d92d73b31dc" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@xensource.com", "time": "Tue Jul 17 18:37:02 2007 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Wed Jul 18 08:47:39 2007 -0700" }, "message": "add kstrndup\n\nAdd a kstrndup function, modelled on strndup. Like strndup this\nreturns a string copied into its own allocated memory, but it copies\nno more than the specified number of bytes from the source.\n\nRemove private strndup() from irda code.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: YOSHIFUJI Hideaki \u003cyoshfuji@linux-ipv6.org\u003e\nCc: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@mandriva.com\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nCc: Panagiotis Issaris \u003ctakis@issaris.org\u003e\nCc: Rene Scharfe \u003crene.scharfe@lsrfire.ath.cx\u003e\n" }, { "commit": "c2f1a551dea8b37c2e0cb886885c250fb703e9d8", "tree": "11a5f256703d856017ceb2268bd02b7b510dee30", "parents": [ "1e5140279f31e47d58ed6036ee61ba7a65710e63" ], "author": { "name": "Meelap Shah", "email": "meelap@umich.edu", "time": "Tue Jul 17 04:04:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:07 2007 -0700" }, "message": "knfsd: nfsd4: vary maximum delegation limit based on RAM size\n\nOur original NFSv4 delegation policy was to give out a read delegation on any\nopen when it was possible to.\n\nSince the lifetime of a delegation isn\u0027t limited to that of an open, a client\nmay quite reasonably hang on to a delegation as long as it has the inode\ncached. This becomes an obvious problem the first time a client\u0027s inode cache\napproaches the size of the server\u0027s total memory.\n\nOur first quick solution was to add a hard-coded limit. This patch makes a\nmild incremental improvement by varying that limit according to the server\u0027s\ntotal memory size, allowing at most 4 delegations per megabyte of RAM.\n\nMy quick back-of-the-envelope calculation finds that in the worst case (where\nevery delegation is for a different inode), a delegation could take about\n1.5K, which would make the worst case usage about 6% of memory. The new limit\nworks out to be about the same as the old on a 1-gig server.\n\n[akpm@linux-foundation.org: Don\u0027t needlessly bloat vmlinux]\n[akpm@linux-foundation.org: Make it right for highmem machines]\nSigned-off-by: \"J. Bruce Fields\" \u003cbfields@citi.umich.edu\u003e\nSigned-off-by: Neil Brown \u003cneilb@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": "9281acea6a3687ff0f262e0be31eac34895b95d7", "tree": "f060d6e4f6a5da1c82bc789104683d39377a2e9a", "parents": [ "b45d52797432bd6b5d9786dbda940eb8d0b9ed06" ], "author": { "name": "Tejun Heo", "email": "htejun@gmail.com", "time": "Tue Jul 17 04:03:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:03 2007 -0700" }, "message": "kallsyms: make KSYM_NAME_LEN include space for trailing \u0027\\0\u0027\n\nKSYM_NAME_LEN is peculiar in that it does not include the space for the\ntrailing \u0027\\0\u0027, forcing all users to use KSYM_NAME_LEN + 1 when allocating\nbuffer. This is nonsense and error-prone. Moreover, when the caller\nforgets that it\u0027s very likely to subtly bite back by corrupting the stack\nbecause the last position of the buffer is always cleared to zero.\n\nThis patch increments KSYM_NAME_LEN by one and updates code accordingly.\n\n* off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro\n is fixed.\n\n* Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together,\n MODULE_NAME_LEN was treated as if it didn\u0027t include space for the\n trailing \u0027\\0\u0027. Fix it.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nAcked-by: Paulo Marques \u003cpmarques@grupopie.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2a7326b5bbafac4c96bcdb944b2a773593030b96", "tree": "25bc49eadea73cf2133198963d1baf3f5def7316", "parents": [ "831441862956fffa17b9801db37e6ea1650b0f69" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "CONFIG_BOUNCE to avoid useless inclusion of bounce buffer logic\n\nThe bounce buffer logic is included on systems that do not need it. If a\nsystem does not have zones like ZONE_DMA and ZONE_HIGHMEM that can lead to\nthe use of bounce buffers then there is no need to reserve memory pools etc\netc. This is true f.e. for SGI Altix.\n\nAlso nicifies the Makefile and gets rid of the tricky \"and\" there.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Jens Axboe \u003cjens.axboe@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": "831441862956fffa17b9801db37e6ea1650b0f69", "tree": "b0334921341f8f1734bdd3243de76d676329d21c", "parents": [ "787d2214c19bcc9b6ac48af0ce098277a801eded" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Jul 17 04:03:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "Freezer: make kernel threads nonfreezable by default\n\nCurrently, the freezer treats all tasks as freezable, except for the kernel\nthreads that explicitly set the PF_NOFREEZE flag for themselves. This\napproach is problematic, since it requires every kernel thread to either\nset PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn\u0027t\ncare for the freezing of tasks at all.\n\nIt seems better to only require the kernel threads that want to or need to\nbe frozen to use some freezer-related code and to remove any\nfreezer-related code from the other (nonfreezable) kernel threads, which is\ndone in this patch.\n\nThe patch causes all kernel threads to be nonfreezable by default (ie. to\nhave PF_NOFREEZE set by default) and introduces the set_freezable()\nfunction that should be called by the freezable kernel threads in order to\nunset PF_NOFREEZE. It also makes all of the currently freezable kernel\nthreads call set_freezable(), so it shouldn\u0027t cause any (intentional)\nchange of behaviour to appear. Additionally, it updates documentation to\ndescribe the freezing of tasks more accurately.\n\n[akpm@linux-foundation.org: build fixes]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Gautham R Shenoy \u003cego@in.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": "787d2214c19bcc9b6ac48af0ce098277a801eded", "tree": "a040604fdf9620a66dc83a0cde4f2140e2ec25b3", "parents": [ "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Jul 17 04:03:34 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "fs: introduce some page/buffer invariants\n\nIt is a bug to set a page dirty if it is not uptodate unless it has\nbuffers. If the page has buffers, then the page may be dirty (some buffers\ndirty) but not uptodate (some buffers not uptodate). The exception to this\nrule is if the set_page_dirty caller is racing with truncate or invalidate.\n\nA buffer can not be set dirty if it is not uptodate.\n\nIf either of these situations occurs, it indicates there could be some data\nloss problem. Some of these warnings could be a harmless one where the\npage or buffer is set uptodate immediately after it is dirtied, however we\nshould fix those up, and enforce this ordering.\n\nBring the order of operations for truncate into line with those of\ninvalidate. This will prevent a page from being able to go !uptodate while\nwe\u0027re holding the tree_lock, which is probably a good thing anyway.\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": "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4", "tree": "dbbb62a8a1816e24369caca1886576154b588340", "parents": [ "b5fab14e5d87df4d94161ae5f5e0c8625f9ffda2" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Tue Jul 17 04:03:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "MM: Make needlessly global hugetlb_no_page() static.\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8ab1372fac5684de56c68f0da1ddc90e1c4ce740", "tree": "42594d334c83ff18655731bf4d9f5d023c9c2886", "parents": [ "a0e1d1be204612ee83b3afe8aa24c5d27e63d464" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "SLUB: Fix CONFIG_SLUB_DEBUG use for CONFIG_NUMA\n\nWe currently cannot disable CONFIG_SLUB_DEBUG for CONFIG_NUMA. Now that\nembedded systems start to use NUMA we may need this.\n\nPut an #ifdef around places where NUMA only code uses fields only valid\nfor CONFIG_SLUB_DEBUG.\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": "a0e1d1be204612ee83b3afe8aa24c5d27e63d464", "tree": "a32092a7eda82c84c5e195de5efd2cb6c0bff553", "parents": [ "434e245ddd3f14aa8eef97cae16c71b863ab092a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "SLUB: Move sysfs operations outside of slub_lock\n\nSysfs can do a gazillion things when called. Make sure that we do not call\nany sysfs functions while holding the slub_lock.\n\nJust protect the essentials:\n\n1. The list of all slab caches\n2. The kmalloc_dma array\n3. The ref counters of the slabs.\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": "434e245ddd3f14aa8eef97cae16c71b863ab092a", "tree": "bbfd9d012416e6882fd714650435a78ce4f9da9b", "parents": [ "94f6030ca792c57422f04a73e7a872d8325946d3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:30 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "SLUB: Do not allocate object bit array on stack\n\nThe objects per slab increase with the current patches in mm since we allow up\nto order 3 allocs by default. More patches in mm actually allow to use 2M or\nhigher sized slabs. For slab validation we need per object bitmaps in order\nto check a slab. We end up with up to 64k objects per slab resulting in a\npotential requirement of 8K stack space. That does not look good.\n\nAllocate the bit arrays via kmalloc.\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": "94f6030ca792c57422f04a73e7a872d8325946d3", "tree": "0197f24d82b1706f1b0521f2cf68feeff64123df", "parents": [ "81cda6626178cd55297831296ba8ecedbfd8b52d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "Slab allocators: Replace explicit zeroing with __GFP_ZERO\n\nkmalloc_node() and kmem_cache_alloc_node() were not available in a zeroing\nvariant in the past. But with __GFP_ZERO it is possible now to do zeroing\nwhile allocating.\n\nUse __GFP_ZERO to remove the explicit clearing of memory via memset whereever\nwe can.\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": "81cda6626178cd55297831296ba8ecedbfd8b52d", "tree": "fa35a6a04db63080bbeb42f33f4b4a891b7fc96c", "parents": [ "ce15fea8274acca06daa1674322d37a7d3f0036b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: Cleanup zeroing allocations\n\nIt becomes now easy to support the zeroing allocs with generic inline\nfunctions in slab.h. Provide inline definitions to allow the continued use of\nkzalloc, kmem_cache_zalloc etc but remove other definitions of zeroing\nfunctions from the slab allocators and util.c.\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": "ce15fea8274acca06daa1674322d37a7d3f0036b", "tree": "ade273da0bfdc0eadb176d847012ce1656b75c93", "parents": [ "12ad6843dd145050231ec5a27fe326c2085f9095" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: Do not use length parameter in slab_alloc()\n\nWe can get to the length of the object through the kmem_cache_structure. The\nadditional parameter does no good and causes the compiler to generate bad\ncode.\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": "12ad6843dd145050231ec5a27fe326c2085f9095", "tree": "36159963da99f44f34b6bb9c7c1a294b2a56642f", "parents": [ "5af328a51067d8dc574c2b2c2629dd436a1e841e" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: Style fix up the loop to disable small slabs\n\nDo proper spacing and we only need to do this in steps of 8.\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": "5af328a51067d8dc574c2b2c2629dd436a1e841e", "tree": "ca1c305a1019eb49a9ead016e6e31aafc3ce8a46", "parents": [ "7b55f620e6908fec2d51751320c2a9459b5f375f" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Jul 17 04:03:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "mm/slub.c: make code static\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.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": "7b55f620e6908fec2d51751320c2a9459b5f375f", "tree": "6fb32a7051b4358018fb26a3125e3b9621418abe", "parents": [ "f1b263393626fe66bee34ccdbf0487cd377e0213" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: Simplify dma index -\u003e size calculation\n\nThere is no need to caculate the dma slab size ourselves. We can simply\nlookup the size of the corresponding non dma slab.\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": "f1b263393626fe66bee34ccdbf0487cd377e0213", "tree": "c144c6f8c0fd8f5eeeac1504bf7204c09938135f", "parents": [ "dfce8648d64c07eade40d456d59cb4bfcbba008c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: faster more efficient slab determination for __kmalloc\n\nkmalloc_index is a long series of comparisons. The attempt to replace\nkmalloc_index with something more efficient like ilog2 failed due to compiler\nissues with constant folding on gcc 3.3 / powerpc.\n\nkmalloc_index()\u0027es long list of comparisons works fine for constant folding\nsince all the comparisons are optimized away. However, SLUB also uses\nkmalloc_index to determine the slab to use for the __kmalloc_xxx functions.\nThis leads to a large set of comparisons in get_slab().\n\nThe patch here allows to get rid of that list of comparisons in get_slab():\n\n1. If the requested size is larger than 192 then we can simply use\n fls to determine the slab index since all larger slabs are\n of the power of two type.\n\n2. If the requested size is smaller then we cannot use fls since there\n are non power of two caches to be considered. However, the sizes are\n in a managable range. So we divide the size by 8. Then we have only\n 24 possibilities left and then we simply look up the kmalloc index\n in a table.\n\nCode size of slub.o decreases by more than 200 bytes through this patch.\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": "dfce8648d64c07eade40d456d59cb4bfcbba008c", "tree": "7141882bd03d9848ec6299a48bc08796a8382062", "parents": [ "2e443fd003d76394a8ceb78f079260478aa10710" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: do proper locking during dma slab creation\n\nWe modify the kmalloc_cache_dma[] array without proper locking. Do the proper\nlocking and undo the dma cache creation if another processor has already\ncreated it.\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": "2e443fd003d76394a8ceb78f079260478aa10710", "tree": "e67fe6e1382ec7a2f636ab09285a41620192eb9f", "parents": [ "0c710013200e72b5e0bc680ff4ec6bdac53c5ce8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: extract dma_kmalloc_cache from get_cache.\n\nThe rarely used dma functionality in get_slab() makes the function too\ncomplex. The compiler begins to spill variables from the working set onto the\nstack. The created function is only used in extremely rare cases so make sure\nthat the compiler does not decide on its own to merge it back into get_slab().\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": "0c710013200e72b5e0bc680ff4ec6bdac53c5ce8", "tree": "160c44e8036e9ea65e7863271f925954d05ed091", "parents": [ "d07dbea46405b37d59495eb4de9d1056dcfb7c6d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: add some more inlines and #ifdef CONFIG_SLUB_DEBUG\n\nAdd #ifdefs around data structures only needed if debugging is compiled into\nSLUB.\n\nAdd inlines to small functions to reduce code size.\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": "d07dbea46405b37d59495eb4de9d1056dcfb7c6d", "tree": "221376c8c5509a88f8942246180685d5c01baf46", "parents": [ "6cb8f91320d3e720351c21741da795fed580b21b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: support __GFP_ZERO in all allocators\n\nA kernel convention for many allocators is that if __GFP_ZERO is passed to an\nallocator then the allocated memory should be zeroed.\n\nThis is currently not supported by the slab allocators. The inconsistency\nmakes it difficult to implement in derived allocators such as in the uncached\nallocator and the pool allocators.\n\nIn addition the support zeroed allocations in the slab allocators does not\nhave a consistent API. There are no zeroing allocator functions for NUMA node\nplacement (kmalloc_node, kmem_cache_alloc_node). The zeroing allocations are\nonly provided for default allocs (kzalloc, kmem_cache_zalloc_node).\n__GFP_ZERO will make zeroing universally available and does not require any\naddititional functions.\n\nSo add the necessary logic to all slab allocators to support __GFP_ZERO.\n\nThe code is added to the hot path. The gfp flags are on the stack and so the\ncacheline is readily available for checking if we want a zeroed object.\n\nZeroing while allocating is now a frequent operation and we seem to be\ngradually approaching a 1-1 parity between zeroing and not zeroing allocs.\nThe current tree has 3476 uses of kmalloc vs 2731 uses of kzalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "6cb8f91320d3e720351c21741da795fed580b21b", "tree": "c9f73c8b82cd0f6c534939b8b9f36e8615b0ab2d", "parents": [ "ef2ad80c7d255ed0449eda947c2d700635b7e0f5" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: consistent ZERO_SIZE_PTR support and NULL result semantics\n\nDefine ZERO_OR_NULL_PTR macro to be able to remove the checks from the\nallocators. Move ZERO_SIZE_PTR related stuff into slab.h.\n\nMake ZERO_SIZE_PTR work for all slab allocators and get rid of the\nWARN_ON_ONCE(size \u003d\u003d 0) that is still remaining in SLAB.\n\nMake slub return NULL like the other allocators if a too large memory segment\nis requested via __kmalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "ef2ad80c7d255ed0449eda947c2d700635b7e0f5", "tree": "bc44916bdb25de29c8211566a4b5a1c041fa8ab6", "parents": [ "d45f39cb06610ea456e1d689149b9becacda8b40" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: consolidate code for krealloc in mm/util.c\n\nThe size of a kmalloc object is readily available via ksize(). ksize is\nprovided by all allocators and thus we can implement krealloc in a generic\nway.\n\nImplement krealloc in mm/util.c and drop slab specific implementations of\nkrealloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "d45f39cb06610ea456e1d689149b9becacda8b40", "tree": "b320a92971c43c42ee1e440e8b43c864485452ab", "parents": [ "6300ea75031e7aebfe3331245b7f750d82621223" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB Debug: fix initial object debug state of NUMA bootstrap objects\n\nThe function we are calling to initialize object debug state during early NUMA\nbootstrap sets up an inactive object giving it the wrong redzone signature.\nThe bootstrap nodes are active objects and should have active redzone\nsignatures.\n\nCurrently slab validation complains and reverts the object to active state.\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": "6300ea75031e7aebfe3331245b7f750d82621223", "tree": "ccd49c8173ac6b8449b57555bd0070ceafe3f3b8", "parents": [ "68dff6a9af9f27df5aeee6d0339818b0e36c1b51" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: ensure that the number of objects per slab stays low for high orders\n\nCurrently SLUB has no provision to deal with too high page orders that may\nbe specified on the kernel boot line. If an order higher than 6 (on a 4k\nplatform) is generated then we will BUG() because slabs get more than 65535\nobjects.\n\nAdd some logic that decreases order for slabs that have too many objects.\nThis allow booting with slab sizes up to MAX_ORDER.\n\nFor example\n\n\tslub_min_order\u003d10\n\nwill boot with a default slab size of 4M and reduce slab sizes for small\nobject sizes to lower orders if the number of objects becomes too big.\nLarge slab sizes like that allow a concentration of objects of the same\nslab cache under as few as possible TLB entries and thus potentially\nreduces TLB pressure.\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": "68dff6a9af9f27df5aeee6d0339818b0e36c1b51", "tree": "f25cc5e85925a8901e301e8f8d5d04188f27c0ee", "parents": [ "5b95a4acf157eee552e013795b54eaa2ab1ee4a1" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB slab validation: Move tracking information alloc outside of lock\n\nWe currently have to do an GFP_ATOMIC allocation because the list_lock is\nalready taken when we first allocate memory for tracking allocation\ninformation. It would be better if we could avoid atomic allocations.\n\nAllocate a size of the tracking table that is usually sufficient (one page)\nbefore we take the list lock. We will then only do the atomic allocation\nif we need to resize the table to become larger than a page (mostly only\nneeded under large NUMA because of the tracking of cpus and nodes otherwise\nthe table stays small).\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": "5b95a4acf157eee552e013795b54eaa2ab1ee4a1", "tree": "8222033f1db996fd6ce28ce3685edc8b17793b0b", "parents": [ "2492268472e7d326a6fe10f92f9211c4578f2482" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:19 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: use list_for_each_entry for loops over all slabs\n\nUse list_for_each_entry() instead of list_for_each().\n\nGet rid of for_all_slabs(). It had only one user. So fold it into the\ncallback. This also gets rid of cpu_slab_flush.\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": "2492268472e7d326a6fe10f92f9211c4578f2482", "tree": "5f668469190b96bc0db13f836d774ae73cf385ca", "parents": [ "8e1f936b73150f5095448a0fee6d4f30a1f9001d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: change error reporting format to follow lockdep loosely\n\nChanges the error reporting format to loosely follow lockdep.\n\nIf data corruption is detected then we generate the following lines:\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nBUG \u003cslab-cache\u003e: \u003cproblem\u003e\n--------------------------------------------\n\nINFO: \u003cmore information\u003e [possibly multiple times]\n\n\u003cobject dump\u003e\n\nFIX \u003cslab-cache\u003e: \u003cremedial action\u003e\n\nThis also adds some more intelligence to the data corruption detection. Its\nnow capable of figuring out the start and end.\n\nAdd a comment on how to configure SLUB so that a production system may\ncontinue to operate even though occasional slab corruption occur through\na misbehaving kernel component. See \"Emergency operations\" in\nDocumentation/vm/slub.txt.\n\n[akpm@linux-foundation.org: build fix]\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": "8e1f936b73150f5095448a0fee6d4f30a1f9001d", "tree": "0996203e35c629e2ec243d128c7bd91ecd74d24a", "parents": [ "5ad333eb66ff1e52a87639822ae088577669dcf9" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Tue Jul 17 04:03:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:00 2007 -0700" }, "message": "mm: clean up and kernelify shrinker registration\n\nI can never remember what the function to register to receive VM pressure\nis called. I have to trace down from __alloc_pages() to find it.\n\nIt\u0027s called \"set_shrinker()\", and it needs Your Help.\n\n1) Don\u0027t hide struct shrinker. It contains no magic.\n2) Don\u0027t allocate \"struct shrinker\". It\u0027s not helpful.\n3) Call them \"register_shrinker\" and \"unregister_shrinker\".\n4) Call the function \"shrink\" not \"shrinker\".\n5) Reduce the 17 lines of waffly comments to 13, but document it properly.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ad333eb66ff1e52a87639822ae088577669dcf9", "tree": "addae6bbd19585f19328f309924d06d647e8f2b7", "parents": [ "7e63efef857575320fb413fbc3d0ee704b72845f" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Tue Jul 17 04:03:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Lumpy Reclaim V4\n\nWhen we are out of memory of a suitable size we enter reclaim. The current\nreclaim algorithm targets pages in LRU order, which is great for fairness at\norder-0 but highly unsuitable if you desire pages at higher orders. To get\npages of higher order we must shoot down a very high proportion of memory;\n\u003e95% in a lot of cases.\n\nThis patch set adds a lumpy reclaim algorithm to the allocator. It targets\ngroups of pages at the specified order anchored at the end of the active and\ninactive lists. This encourages groups of pages at the requested orders to\nmove from active to inactive, and active to free lists. This behaviour is\nonly triggered out of direct reclaim when higher order pages have been\nrequested.\n\nThis patch set is particularly effective when utilised with an\nanti-fragmentation scheme which groups pages of similar reclaimability\ntogether.\n\nThis patch set is based on Peter Zijlstra\u0027s lumpy reclaim V2 patch which forms\nthe foundation. Credit to Mel Gorman for sanitity checking.\n\nMel said:\n\n The patches have an application with hugepage pool resizing.\n\n When lumpy-reclaim is used used with ZONE_MOVABLE, the hugepages pool can\n be resized with greater reliability. Testing on a desktop machine with 2GB\n of RAM showed that growing the hugepage pool with ZONE_MOVABLE on it\u0027s own\n was very slow as the success rate was quite low. Without lumpy-reclaim,\n each attempt to grow the pool by 100 pages would yield 1 or 2 hugepages.\n With lumpy-reclaim, getting 40 to 70 hugepages on each attempt was typical.\n\n[akpm@osdl.org: ia64 pfn_to_nid fixes and loop cleanup]\n[bunk@stusta.de: static declarations for internal functions]\n[a.p.zijlstra@chello.nl: initial lumpy V2 implementation]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7e63efef857575320fb413fbc3d0ee704b72845f", "tree": "ce33c10e5f5d9ea16b0e6944d6994b1f9cc22040", "parents": [ "ed7ed365172e27b0efe9d43cc962723c7193e34e" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Add a movablecore\u003d parameter for sizing ZONE_MOVABLE\n\nThis patch adds a new parameter for sizing ZONE_MOVABLE called\nmovablecore\u003d. While kernelcore\u003d is used to specify the minimum amount of\nmemory that must be available for all allocation types, movablecore\u003d is\nused to specify the minimum amount of memory that is used for migratable\nallocations. The amount of memory used for migratable allocations\ndetermines how large the huge page pool could be dynamically resized to at\nruntime for example.\n\nHow movablecore is actually handled is that the total number of pages in\nthe system is calculated and a value is set for kernelcore that is\n\nkernelcore \u003d\u003d totalpages - movablecore\n\nBoth kernelcore\u003d and movablecore\u003d can be safely specified at the same time.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ed7ed365172e27b0efe9d43cc962723c7193e34e", "tree": "6c22daf6908f92c64aae2b425e6383fe0ed404ac", "parents": [ "396faf0303d273219db5d7eb4a2879ad977ed185" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "handle kernelcore\u003d: generic\n\nThis patch adds the kernelcore\u003d parameter for x86.\n\nOnce all patches are applied, a new command-line parameter exist and a new\nsysctl. This patch adds the necessary documentation.\n\nFrom: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\n\n When \"kernelcore\" boot option is specified, kernel can\u0027t boot up on ia64\n because of an infinite loop. In addition, the parsing code can be handled\n in an architecture-independent manner.\n\n This patch uses common code to handle the kernelcore\u003d parameter. It is\n only available to architectures that support arch-independent zone-sizing\n (i.e. define CONFIG_ARCH_POPULATES_NODE_MAP). Other architectures will\n ignore the boot parameter.\n\n[bunk@stusta.de: make cmdline_parse_kernelcore() static]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "396faf0303d273219db5d7eb4a2879ad977ed185", "tree": "96cb64fd6713ef7a924f4f878e259aea781f079a", "parents": [ "2a1e274acf0b1c192face19a4be7c12d4503eaaf" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Allow huge page allocations to use GFP_HIGH_MOVABLE\n\nHuge pages are not movable so are not allocated from ZONE_MOVABLE. However,\nas ZONE_MOVABLE will always have pages that can be migrated or reclaimed, it\ncan be used to satisfy hugepage allocations even when the system has been\nrunning a long time. This allows an administrator to resize the hugepage pool\nat runtime depending on the size of ZONE_MOVABLE.\n\nThis patch adds a new sysctl called hugepages_treat_as_movable. When a\nnon-zero value is written to it, future allocations for the huge page pool\nwill use ZONE_MOVABLE. Despite huge pages being non-movable, we do not\nintroduce additional external fragmentation of note as huge pages are always\nthe largest contiguous block we care about.\n\n[akpm@linux-foundation.org: various fixes]\nSigned-off-by: 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": "2a1e274acf0b1c192face19a4be7c12d4503eaaf", "tree": "f7e98e1fe19d38bb10bf178fb8f8ed1789b659b2", "parents": [ "769848c03895b63e5662eb7e4ec8c4866f7d0183" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Create the ZONE_MOVABLE zone\n\nThe following 8 patches against 2.6.20-mm2 create a zone called ZONE_MOVABLE\nthat is only usable by allocations that specify both __GFP_HIGHMEM and\n__GFP_MOVABLE. This has the effect of keeping all non-movable pages within a\nsingle memory partition while allowing movable allocations to be satisfied\nfrom either partition. The patches may be applied with the list-based\nanti-fragmentation patches that groups pages together based on mobility.\n\nThe size of the zone is determined by a kernelcore\u003d parameter specified at\nboot-time. This specifies how much memory is usable by non-movable\nallocations and the remainder is used for ZONE_MOVABLE. Any range of pages\nwithin ZONE_MOVABLE can be released by migrating the pages or by reclaiming.\n\nWhen selecting a zone to take pages from for ZONE_MOVABLE, there are two\nthings to consider. First, only memory from the highest populated zone is\nused for ZONE_MOVABLE. On the x86, this is probably going to be ZONE_HIGHMEM\nbut it would be ZONE_DMA on ppc64 or possibly ZONE_DMA32 on x86_64. Second,\nthe amount of memory usable by the kernel will be spread evenly throughout\nNUMA nodes where possible. If the nodes are not of equal size, the amount of\nmemory usable by the kernel on some nodes may be greater than others.\n\nBy default, the zone is not as useful for hugetlb allocations because they are\npinned and non-migratable (currently at least). A sysctl is provided that\nallows huge pages to be allocated from that zone. This means that the huge\npage pool can be resized to the size of ZONE_MOVABLE during the lifetime of\nthe system assuming that pages are not mlocked. Despite huge pages being\nnon-movable, we do not introduce additional external fragmentation of note as\nhuge pages are always the largest contiguous block we care about.\n\nCredit goes to Andy Whitcroft for catching a large variety of problems during\nreview of the patches.\n\nThis patch creates an additional zone, ZONE_MOVABLE. This zone is only usable\nby allocations which specify both __GFP_HIGHMEM and __GFP_MOVABLE. Hot-added\nmemory continues to be placed in their existing destination as there is no\nmechanism to redirect them to a specific zone.\n\n[y-goto@jp.fujitsu.com: Fix section mismatch of memory hotplug related code]\n[akpm@linux-foundation.org: various fixes]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.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": "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c", "tree": "fade44f4d7baf5695a856ad73e6b98f0d6edf9de", "parents": [ "e21ea246bce5bb93dd822de420172ec280aed492" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Tue Jul 17 04:03:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Fix read/truncate race\n\ndo_generic_mapping_read currently samples the i_size at the start and doesn\u0027t\ndo so again unless it needs to call -\u003ereadpage to load a page. After\n-\u003ereadpage it has to re-sample i_size as a truncate may have caused that page\nto be filled with zeros, and the read() call should not see these.\n\nHowever there are other activities that might cause -\u003ereadpage to be called on\na page between the time that do_generic_mapping_read samples i_size and when\nit finds that it has an uptodate page. These include at least read-ahead and\npossibly another thread performing a read.\n\nSo do_generic_mapping_read must sample i_size *after* it has an uptodate page.\n Thus the current sampling at the start and after a read can be replaced with\na sampling before the copy-out.\n\nThe same change applied to __generic_file_splice_read.\n\nNote that this fixes any race with truncate_complete_page, but does not fix a\npossible race with truncate_partial_page. If a partial truncate happens after\ndo_generic_mapping_read samples i_size and before the copy_out, the nuls that\ntruncate_partial_page place in the page could be copied out incorrectly.\n\nI think the best fix for that is to *not* zero out parts of the page in\ntruncate_partial_page, but rather to zero out the tail of a page when\nincreasing i_size.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-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": "489de30259e667d7bc47da9da44a0270b050cd97", "tree": "6807814f443fe2c5d041c3bc3fe3ca8d22a955ca", "parents": [ "1f1c2881f673671539b25686df463518d69c4649", "bf22f6fe2d72b4d7e9035be8ceb340414cf490e3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 17:58:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 17:58:08 2007 -0700" }, "message": "Merge branch \u0027merge\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc\n\n* \u0027merge\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (209 commits)\n [POWERPC] Create add_rtc() function to enable the RTC CMOS driver\n [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number\n [POWERPC] xilinxfb: Parameterize xilinxfb platform device registration\n [POWERPC] Oprofile support for Power 5++\n [POWERPC] Enable arbitary speed tty ioctls and split input/output speed\n [POWERPC] Make drivers/char/hvc_console.c:khvcd() static\n [POWERPC] Remove dead code for preventing pread() and pwrite() calls\n [POWERPC] Remove unnecessary #undef printk from prom.c\n [POWERPC] Fix typo in Ebony default DTS\n [POWERPC] Check for NULL ppc_md.init_IRQ() before calling\n [POWERPC] Remove extra return statement\n [POWERPC] pasemi: Don\u0027t auto-select CONFIG_EMBEDDED\n [POWERPC] pasemi: Rename platform\n [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports\n [POWERPC] Add __read_mostly support for powerpc\n [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane\n [POWERPC] Create a dummy zImage if no valid platform has been selected\n [POWERPC] PS3: Bootwrapper support.\n [POWERPC] powermac i2c: Use mutex\n [POWERPC] Schedule removal of arch/ppc\n ...\n\nFixed up conflicts manually in:\n\n\tDocumentation/feature-removal-schedule.txt\n\tarch/powerpc/kernel/pci_32.c\n\tarch/powerpc/kernel/pci_64.c\n\tinclude/asm-powerpc/pci.h\n\nand asked the powerpc people to double-check the result..\n" }, { "commit": "b91cba52e9b7b3f1c0037908a192d93a869ca9e5", "tree": "bbce7f323c8f52b308af5a152673a75b3e445360", "parents": [ "98283bb49c6c8c070ebde9f47489d3e9a83c1323", "e509ac4bbc661052dc73a2e8138800ba77d4ecb9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 10:32:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 10:32:02 2007 -0700" }, "message": "Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6\n\n* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (68 commits)\n sh: sh-rtc support for SH7709.\n sh: Revert __xdiv64_32 size change.\n sh: Update r7785rp defconfig.\n sh: Export div symbols for GCC 4.2 and ST GCC.\n sh: fix race in parallel out-of-tree build\n sh: Kill off dead mach.c for hp6xx.\n sh: hd64461.h cleanup and added comments.\n sh: Update the alignment when 4K stacks are used.\n sh: Add a .bss.page_aligned section for 4K stacks.\n sh: Don\u0027t let SH-4A clobber SH-4 CFLAGS.\n sh: Add parport stub for SuperIO ports.\n sh: Drop -Wa,-dsp for DSP tuning.\n sh: Update dreamcast defconfig.\n fb: pvr2fb: A few more __devinit annotations for PCI.\n fb: pvr2fb: Fix up section mismatch warnings.\n sh: Select IPR-IRQ for SH7091.\n sh: Correct __xdiv64_32/div64_32 return value size.\n sh: Fix timer-tmu build for SH-3.\n sh: Add cpu and mach links to CLEAN_FILES.\n sh: Preliminary support for the SH-X3 CPU.\n ...\n" }, { "commit": "c80e7a826c10cf5bce8487fbaede48bd0bd48d08", "tree": "90a8f4dd0c936eacab217a183a9ff311ad259a32", "parents": [ "5e70030d4cf91613530a23b40ad9919bb9ee114f" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sun Jul 15 23:42:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:52 2007 -0700" }, "message": "permit mempool_free(NULL)\n\nChristian Borntraeger points out that mempool_free() doesn\u0027t noop when\nhanded NULL. This is inconsistent with the other free-like functions\nin the kernel.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Christian Borntraeger \u003cborntraeger@de.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": "8f8a68ee486e1c81eaead3c521822bf86142d380", "tree": "8435b491a52ea22918f621892970536957352fa0", "parents": [ "1492192b4a0bb84dd9b792cc0bd30583220a28a7" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Sun Jul 15 23:41:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:52 2007 -0700" }, "message": "remove mm/backing-dev.c:congestion_wait_interruptible()\n\ncongestion_wait_interruptible() is no longer used.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nAcked-by: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e733f071e16bdad13a75eedb102e8941b09927e", "tree": "4c3be61c45b6b7a5943b4680a27b42aacf951b00", "parents": [ "97842216b8400fe9d1a20468959e2989180f8f79" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:41:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:47 2007 -0700" }, "message": "dirty_writeback_centisecs_handler() cleanup\n\nRepair indenting bustage.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54114994f4de7e8076fc250e44501e55e19b75b5", "tree": "b0b0c2b5c3cf1c0daa7c6db7911c42dcf912f181", "parents": [ "203a2935c734c054bfd4665fb5d8835498af50a8" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Sun Jul 15 23:40:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:45 2007 -0700" }, "message": "fault-injection: add min-order parameter to fail_page_alloc\n\nLimiting smaller allocation failures by fault injection helps to find real\npossible bugs. Because higher order allocations are likely to fail and\nzero-order allocations are not likely to fail.\n\nThis patch adds min-order parameter to fail_page_alloc. It specifies the\nminimum page allocation order to be injected failures.\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "17973f5af741f1758ed57c5115ca394c22bee159", "tree": "0fd340e46f1fbae4ab7aa8d06b26af208a3e83f4", "parents": [ "1e3e8d91fee56e1ab598b265466dc38033f1b915" ], "author": { "name": "Micah Cowan", "email": "micah@cowan.name", "time": "Sun Jul 15 23:40:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:43 2007 -0700" }, "message": "Only send SIGXFSZ when exceeding rlimits.\n\nSome users have been having problems with utilities like cp or dd dumping\ncore when they try to copy a file that\u0027s too large for the destination\nfilesystem (typically, \u003e 4gb). Apparently, some defunct standards required\nSIGXFSZ to be sent in such circumstances, but SUS only requires/allows it\nfor when a written file exceeds the process\u0027s resource limits. I\u0027d like to\nlimit SIGXFSZs to the bare minimum required by SUS.\n\nPatch sent per http://lkml.org/lkml/2007/4/10/302\n\nSigned-off-by: Micah Cowan \u003cmicahcowan@ubuntu.com\u003e\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nCc: \u003creiserfs-dev@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f057eac0d7ad967138390a9dd7fd8267e1e39d19", "tree": "96e951adb2934ee4495edda09f94c67c02fcf5ab", "parents": [ "693783817a79d8619335e2bf1a33de73cf189864" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Sun Jul 15 23:40:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:42 2007 -0700" }, "message": "Introduce CONFIG_VIRT_TO_BUS\n\nMake some offending drivers depend on it and set CONFIG_ARCH_NO_VIRT_TO_BUS\nfor ppc64 so that we don\u0027t build those drivers.\n\nThis gets PowerPC allmodconfig and allyesconfig much closer to building.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nAcked-by: David 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": "57c8f63e8e7a4a95d7fcc49e3953341fb4039899", "tree": "cf0bd22654e4aff40c5d11775e949aba558922df", "parents": [ "54a3bdd76e82d7f64e5504409c55b51e48c3a10a" ], "author": { "name": "Greg Ungerer", "email": "gerg@snapgear.com", "time": "Sun Jul 15 23:38:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:37 2007 -0700" }, "message": "nommu: stub expand_stack() for nommu case\n\nBe consistent with VM mmap, implement expand_stack(). We can\u0027t actually do\nanything other than return an error in the no MMU case though.\n\nSigned-off-by: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: David Howells \u003cdhowells@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": "0165ab443556bdfad388da6c33d74a71b77d72b2", "tree": "c2449128f60ebed846b7d63633ccee3f88949a1c", "parents": [ "c44939ecb6e05aeaaf12d4e1bb046719c97e457e" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Sun Jul 15 23:38:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:37 2007 -0700" }, "message": "split mmap\n\nThis is a straightforward split of do_mmap_pgoff() into two functions:\n\n - do_mmap_pgoff() checks the parameters, and calculates the vma\n flags. Then it calls\n\n - mmap_region(), which does the actual mapping\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\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": "c44939ecb6e05aeaaf12d4e1bb046719c97e457e", "tree": "5bf1bc2c4c518fb89271110a0e9fbb43d6f4c413", "parents": [ "5ed44a401ddfc60e11c3484e86f0c8285051139a" ], "author": { "name": "akpm@linux-foundation.org", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:38:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:37 2007 -0700" }, "message": "NeilBrown \u003cneilb@suse.de\u003e\n\nThe do_loop_readv_writev implementation of readv breaks out of the loop as\nsoon as a single read request didn\u0027t fill it\u0027s buffer:\n\n\t\tif (nr !\u003d len)\n\t\t\tbreak;\n\nThe generic_file_aio_read version doesn\u0027t. So if it hits EOF before the end\nof the list of buffers, it will try again on the next buffer. If the file was\nextended in the mean time, this will produce a bad result.\n\nSigned-off-by: Neil Brown \u003cneilb@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": "5ed44a401ddfc60e11c3484e86f0c8285051139a", "tree": "96a44aac2853fc38aac801b3b628fb58adada2fb", "parents": [ "84a01c2f8ea9bf210b961c6301e8e870a46505a6" ], "author": { "name": "Herbert van den Bergh", "email": "Herbert.van.den.Bergh@oracle.com", "time": "Sun Jul 15 23:38:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:37 2007 -0700" }, "message": "do not limit locked memory when RLIMIT_MEMLOCK is RLIM_INFINITY\n\nFix a bug in mm/mlock.c on 32-bit architectures that prevents a user from\nlocking more than 4GB of shared memory, or allocating more than 4GB of\nshared memory in hugepages, when rlim[RLIMIT_MEMLOCK] is set to\nRLIM_INFINITY.\n\nSigned-off-by: Herbert van den Bergh \u003cherbert.van.den.bergh@oracle.com\u003e\nAcked-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "84a01c2f8ea9bf210b961c6301e8e870a46505a6", "tree": "cf61ff3302d5bfa339f1449bc3302eded09349fd", "parents": [ "5dc4ac6324094cd52dc77ddf88296a94b90bbafc" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Sun Jul 15 23:38:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "slob: sparsemem support\n\nCurrently slob is disabled if we\u0027re using sparsemem, due to an earlier\npatch from Goto-san. Slob and static sparsemem work without any trouble as\nit is, and the only hiccup is a missing slab_is_available() in the case of\nsparsemem extreme. With this, we\u0027re rid of the last set of restrictions\nfor slob usage.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\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": "b49ad484c54116862d717ffafcab1c9a46600b48", "tree": "d081db8e0026022d13cc08a6c594c9471c74e1d4", "parents": [ "6193a2ff180920f84ee06977165ebf32431fc2d2" ], "author": { "name": "Dan Aloni", "email": "da-x@monatomic.org", "time": "Sun Jul 15 23:38:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "mm/page_alloc.c: lower printk severity\n\nSigned-off-by: Dan Aloni \u003cda-x@monatomic.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6193a2ff180920f84ee06977165ebf32431fc2d2", "tree": "d3c6423c50463ea741080a58a2e654cf103431f3", "parents": [ "f7977793240d836e60ff413e94e6914f08e10941" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Sun Jul 15 23:38:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "slob: initial NUMA support\n\nThis adds preliminary NUMA support to SLOB, primarily aimed at systems with\nsmall nodes (tested all the way down to a 128kB SRAM block), whether\nasymmetric or otherwise.\n\nWe follow the same conventions as SLAB/SLUB, preferring current node\nplacement for new pages, or with explicit placement, if a node has been\nspecified. Presently on UP NUMA this has the side-effect of preferring\nnode#0 allocations (since numa_node_id() \u003d\u003d 0, though this could be\nreworked if we could hand off a pfn to determine node placement), so\nsingle-CPU NUMA systems will want to place smaller nodes further out in\nterms of node id. Once a page has been bound to a node (via explicit node\nid typing), we only do block allocations from partial free pages that have\na matching node id in the page flags.\n\nThe current implementation does have some scalability problems, in that all\npartial free pages are tracked in the global freelist (with contention due\nto the single spinlock). However, these are things that are being reworked\nfor SMP scalability first, while things like per-node freelists can easily\nbe built on top of this sort of functionality once it\u0027s been added.\n\nMore background can be found in:\n\n\thttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118117916022379\u0026w\u003d2\n\thttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118170446306199\u0026w\u003d2\n\thttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118187859420048\u0026w\u003d2\n\nand subsequent threads.\n\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: 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": "f7977793240d836e60ff413e94e6914f08e10941", "tree": "75955844a77b70c02aa44982d27ca17ceb702cf3", "parents": [ "897e679b17460b52752a038af29db356fe1bd759" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Sun Jul 15 23:38:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "speed up madvise_need_mmap_write() usage\n\nIn the new madvise_need_mmap_write() call we can avoid an extra case\nstatement and function call as follows.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\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": "897e679b17460b52752a038af29db356fe1bd759", "tree": "9b921ff267dabfbc662e4d245e6bc86a52a6f5ce", "parents": [ "6ea6e6887dad1fd44e6d5020a0fd355af4f2b6b3" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Sun Jul 15 23:38:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "mm/slab.c: start_cpu_timer() should be __cpuinit\n\nstart_cpu_timer() should be __cpuinit (which also matches what it\u0027s\ncallers are).\n\n__devinit didn\u0027t cause problems, it simply wasted a few bytes of memory\nfor the common CONFIG_HOTPLUG_CPU\u003dn case.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6ea6e6887dad1fd44e6d5020a0fd355af4f2b6b3", "tree": "184e6c217acd1013b60f439bb7cb8b400525ca43", "parents": [ "8f0accc8627043702e6ea2bb8b9aa3a171ef8393" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Sun Jul 15 23:38:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "mm: more __meminit annotations\n\nCurrently zone_spanned_pages_in_node() and zone_absent_pages_in_node() are\nnon-static for ARCH_POPULATES_NODE_MAP and static otherwise. However, only\nthe non-static versions are __meminit annotated, despite only being called\nfrom __meminit functions in either case.\n\nzone_init_free_lists() is currently non-static and not __meminit annotated\neither, despite only being called once in the entire tree by\ninit_currently_empty_zone(), which too is __meminit. So make it static and\nproperly annotated.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8f0accc8627043702e6ea2bb8b9aa3a171ef8393", "tree": "94aaf1cdf099c7e875231b1d9575727b8e14f7f2", "parents": [ "45e98cdb6d365b34b7a2d849e4d8bdc264d8e6e4" ], "author": { "name": "Jan Beulich", "email": "jbeulich@novell.com", "time": "Sun Jul 15 23:38:19 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "kill vmalloc_earlyreserve\n\nThis symbol got orphaned quite a while ago.\n\nSigned-off-by: Jan Beulich \u003cjbeulich@novell.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "98011f569e2ae1e4ae394f6e23faa16676d50de4", "tree": "6cde069a3fd943c36d4029b21d8b7ad4c24811f6", "parents": [ "140d5a49046b6d73dce4a4229e88c000a99ee126" ], "author": { "name": "Jan Beulich", "email": "jbeulich@novell.com", "time": "Sun Jul 15 23:38:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "mm: fix improper .init-type section references\n\n.. which modpost started warning about.\n\nSigned-off-by: Jan Beulich \u003cjbeulich@novell.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "140d5a49046b6d73dce4a4229e88c000a99ee126", "tree": "64dcfe28ef6f5ccee5a2722e5c332c66ded29e28", "parents": [ "462e00cc7151ed91fba688594436c453c80efb5d" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Sun Jul 15 23:38:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "numa: mempolicy: trivial debug fixes.\n\nEnabling debugging fails to build due to the nodemask variable in\ndo_mbind() having changed names, and then oopses on boot due to the\nassumption that the nodemask can be dereferenced -- which doesn\u0027t work out\nso well when the policy is changed to MPOL_DEFAULT with a NULL nodemask by\nnuma_default_policy().\n\nThis fixes it up, and switches from PDprintk() to pr_debug() while\nwe\u0027re at it.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.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": "462e00cc7151ed91fba688594436c453c80efb5d", "tree": "bf648899ba65f9eb000e9c8163a61c1cb1be9bfe", "parents": [ "b71636e29823c0602d908a2a62e94c9b57a97491" ], "author": { "name": "Ethan Solomita", "email": "solo@google.com", "time": "Sun Jul 15 23:38:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "oom: stop allocating user memory if TIF_MEMDIE is set\n\nget_user_pages() can try to allocate a nearly unlimited amount of memory on\nbehalf of a user process, even if that process has been OOM killed. The\nOOM kill occurs upon return to user space via a SIGKILL, but\nget_user_pages() will try allocate all its memory before returning. Change\nget_user_pages() to check for TIF_MEMDIE, and if set then return\nimmediately.\n\nSigned-off-by: Ethan Solomita \u003csolo@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b71636e29823c0602d908a2a62e94c9b57a97491", "tree": "d69a20eec2cc05bcd9b0dac2b9d4ccd9bad39e09", "parents": [ "f0630fff54a239efbbd89faf6a62da071ef1ff78" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Sun Jul 15 23:38:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "numa: mempolicy: dynamic interleave map for system init\n\nThis converts the default system init memory policy to use a dynamically\ncreated node map instead of defaulting to all online nodes. Nodes of a\ncertain size (\u003e\u003d 16MB) are judged to be suitable for interleave, and are added\nto the map. If all nodes are smaller in size, the largest one is\nautomatically selected.\n\nWithout this, tiny nodes find themselves out of memory before we even make it\nto userspace. Systems with large nodes will notice no change.\n\nOnly the system init policy is effected by this change, the regular\nMPOL_DEFAULT policy is still switched to later on in the boot process as\nnormal.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f0630fff54a239efbbd89faf6a62da071ef1ff78", "tree": "4004adc3adf4dbe1a6188ca0bbd56f7606d4d05f", "parents": [ "fc9a07e7bf1a76e710f5df017abb07628db1781d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jul 15 23:38:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "SLUB: support slub_debug on by default\n\nAdd a new configuration variable\n\nCONFIG_SLUB_DEBUG_ON\n\nIf set then the kernel will be booted by default with slab debugging\nswitched on. Similar to CONFIG_SLAB_DEBUG. By default slab debugging\nis available but must be enabled by specifying \"slub_debug\" as a\nkernel parameter.\n\nAlso add support to switch off slab debugging for a kernel that was\nbuilt with CONFIG_SLUB_DEBUG_ON. This works by specifying\n\nslub_debug\u003d-\n\nas a kernel parameter.\n\nDave Jones wanted this feature.\nhttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d118072189913045\u0026w\u003d2\n\n[akpm@linux-foundation.org: clean up switch statement]\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": "fc9a07e7bf1a76e710f5df017abb07628db1781d", "tree": "bf2a288f97cbf9cfd82a4306a7d9c615abc7c887", "parents": [ "45426812d6b601430d560cb6049757b5b0bc71c4" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:38:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "invalidate_mapping_pages(): add cond_resched\n\ninvalidate_mapping_pages() can sometimes take a long time (millions of pages\nto free). Long enough for the softlockup detector to trigger.\n\nWe used to have a cond_resched() in there but I took it out because the\ndrop_caches code calls invalidate_mapping_pages() under inode_lock.\n\nThe patch adds a nasty flag and puts the cond_resched() back.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "45426812d6b601430d560cb6049757b5b0bc71c4", "tree": "64c8439a53f4ca402a9d7deb2a455aa0de08c8ea", "parents": [ "f96efd585b8d847181f81bf16721f96ded18d9fe" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Jul 15 23:38:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "mm: debug check for the fault vs invalidate race\n\nAdd a bugcheck for Andrea\u0027s pagefault vs invalidate race. This is triggerable\nfor both linear and nonlinear pages with a userspace test harness (using\ndirect IO and truncate, respectively).\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": "f96efd585b8d847181f81bf16721f96ded18d9fe", "tree": "10821321b4f501e3126606ef2b54eb356ec8ef77", "parents": [ "2706a1b89b1a3e7434a668d4a9d15f616da96685" ], "author": { "name": "Joe Jin", "email": "joe.jin@oracle.com", "time": "Sun Jul 15 23:38:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "hugetlb: fix race in alloc_fresh_huge_page()\n\nThat static `nid\u0027 index needs locking. Without it we can end up calling\nalloc_pages_node() with an illegal node ID and the kernel crashes.\n\nAcked-by: gurudas pai \u003cgurudas.pai@oracle.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2706a1b89b1a3e7434a668d4a9d15f616da96685", "tree": "6b8d8b8d24811c7f8b4593e0b600533f9d5329f6", "parents": [ "553948491c18413928b85a9025b92af80e7d61d6" ], "author": { "name": "Anderson Briglia", "email": "briglia.anderson@gmail.com", "time": "Sun Jul 15 23:38:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "vmscan: fix comments related to shrink_list()\n\nFix the shrink_list name on some files under mm/ directory.\n\nSigned-off-by: Anderson Briglia \u003canderson.briglia@indt.org.br\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "553948491c18413928b85a9025b92af80e7d61d6", "tree": "fcb6adcb743533c7d6818bbd13511062f6fda737", "parents": [ "d87a133fc21d842e3cc285e6bbff727181abec81" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Jul 15 23:38:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "slob: improved alignment handling\n\nRemove the core slob allocator\u0027s minimum alignment restrictions, and instead\nintroduce the alignment restrictions at the slab API layer. This lets us heed\nthe ARCH_KMALLOC/SLAB_MINALIGN directives, and also use __alignof__ (unsigned\nlong) for the default alignment (which should allow relaxed alignment\narchitectures to take better advantage of SLOB\u0027s small minimum alignment).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d87a133fc21d842e3cc285e6bbff727181abec81", "tree": "1f89a5dab95c7813eca37039a94e39c73a797cdc", "parents": [ "95b35127f13661abb0dc3459042cdb417d21e692" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Jul 15 23:38:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "slob: remove bigblock tracking\n\nRemove the bigblock lists in favour of using compound pages and going directly\nto the page allocator. Allocation size is stored in page-\u003eprivate, which also\nmakes ksize more accurate than it previously was.\n\nSaves ~.5K of code, and 12-24 bytes overhead per \u003e\u003d PAGE_SIZE allocation.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "95b35127f13661abb0dc3459042cdb417d21e692", "tree": "d3a8a407cb7a54332edef69ae6077a2f23c5fffc", "parents": [ "698827fa9f45019df1609bb686bc51c94e127fbc" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Jul 15 23:38:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "slob: rework freelist handling\n\nImprove slob by turning the freelist into a list of pages using struct page\nfields, then each page has a singly linked freelist of slob blocks via a\npointer in the struct page.\n\n- The first benefit is that the slob freelists can be indexed by a smaller\n type (2 bytes, if the PAGE_SIZE is reasonable).\n\n- Next is that freeing is much quicker because it does not have to traverse\n the entire freelist. Allocation can be slightly faster too, because we can\n skip almost-full freelist pages completely.\n\n- Slob pages are then freed immediately when they become empty, rather than\n having a periodic timer try to free them. This gives efficiency and memory\n consumption improvement.\n\nThen, we don\u0027t encode seperate size and next fields into each slob block,\nrather we use the sign bit to distinguish between \"size\" or \"next\". Then\nsize 1 blocks contain a \"next\" offset, and others contain the \"size\" in\nthe first unit and \"next\" in the second unit.\n\n- This allows minimum slob allocation alignment to go from 8 bytes to 2\n bytes on 32-bit and 12 bytes to 2 bytes on 64-bit. In practice, it is\n best to align them to word size, however some architectures (eg. cris)\n could gain space savings from turning off this extra alignment.\n\nThen, make kmalloc use its own slob_block at the front of the allocation\nin order to encode allocation size, rather than rely on not overwriting\nslob\u0027s existing header block.\n\n- This reduces kmalloc allocation overhead similarly to alignment reductions.\n\n- Decouples kmalloc layer from the slob allocator.\n\nThen, add a page flag specific to slob pages.\n\n- This means kfree of a page aligned slob block doesn\u0027t have to traverse\n the bigblock list.\n\nI would get benchmarks, but my test box\u0027s network doesn\u0027t come up with\nslob before this patch. I think something is timing out. Anyway, things\nare faster after the patch.\n\nCode size goes up about 1K, however dynamic memory usage _should_ be\nlower even on relatively small memory systems.\n\nFuture todo item is to restore the cyclic free list search, rather than\nto always begin at the start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1037b83bd04e31449dc9323f1e8ddada4264ef66", "tree": "aad6be88185e675503847d3cf43a257ceb93d0f9", "parents": [ "b92151bab91ef906378d3e0e7128d55dd641e966" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Sun Jul 15 23:38:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "MM: alloc_large_system_hash() can free some memory for non power-of-two bucketsize\n\nalloc_large_system_hash() is called at boot time to allocate space for\nseveral large hash tables.\n\nLately, TCP hash table was changed and its bucketsize is not a power-of-two\nanymore.\n\nOn most setups, alloc_large_system_hash() allocates one big page (order \u003e\n0) with __get_free_pages(GFP_ATOMIC, order). This single high_order page\nhas a power-of-two size, bigger than the needed size.\n\nWe can free all pages that wont be used by the hash table.\n\nOn a 1GB i386 machine, this patch saves 128 KB of LOWMEM memory.\n\nTCP established hash table entries: 32768 (order: 6, 393216 bytes)\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b92151bab91ef906378d3e0e7128d55dd641e966", "tree": "81f96a5976bcc749c42a9ae293e16667ea2d9afe", "parents": [ "68e116a3b57d09b220fe38712bebd956b6dbbbc6" ], "author": { "name": "Pavel Emelianov", "email": "xemul@sw.ru", "time": "Sun Jul 15 23:38:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "Make /proc/slabinfo use seq_list_xxx helpers\n\nThis entry prints a header in .start callback. This is OK, but the more\nelegant solution would be to move this into the .show callback and use\nseq_list_start_head() in .start one.\n\nI have left it as is in order to make the patch just switch to new API and\nnoting more.\n\n[adobriyan@sw.ru: Wrong pointer was used as kmem_cache pointer]\nSigned-off-by: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\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": "68e116a3b57d09b220fe38712bebd956b6dbbbc6", "tree": "a60f42f4b34b0a6d9544441c808f0dc4c67312a7", "parents": [ "31a5c6e4f25704f51f9a1373f0784034306d4cf1" ], "author": { "name": "Rolf Eike Beer", "email": "eike-kernel@sf-tec.de", "time": "Sun Jul 15 23:38:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "MM: use DIV_ROUND_UP() in mm/memory.c\n\nReplace a hand coded version of DIV_ROUND_UP().\n\nSigned-off-by: Rolf Eike Beer \u003ceike-kernel@sf-tec.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "31a5c6e4f25704f51f9a1373f0784034306d4cf1", "tree": "873acb320c44558e831724088695d13110e1f093", "parents": [ "f0c0b2b808f232741eadac272bd4bc51f18df0f4" ], "author": { "name": "Nishanth Aravamudan", "email": "nacc@us.ibm.com", "time": "Sun Jul 15 23:38:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "hugetlb: remove unnecessary nid initialization\n\nnid is initialized to numa_node_id() but will either be overwritten in\nthe loop or not used in the conditional. So remove the initialization.\n\nSigned-off-by: Nishanth Aravamudan \u003cnacc@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": "f0c0b2b808f232741eadac272bd4bc51f18df0f4", "tree": "c2568efdc496cc165a4e72d8aa2542b22035e342", "parents": [ "18a8bd949d6adb311ea816125ff65050df1f3f6e" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Sun Jul 15 23:38:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "change zonelist order: zonelist order selection logic\n\nMake zonelist creation policy selectable from sysctl/boot option v6.\n\nThis patch makes NUMA\u0027s zonelist (of pgdat) order selectable.\nAvailable order are Default(automatic)/ Node-based / Zone-based.\n\n[Default Order]\nThe kernel selects Node-based or Zone-based order automatically.\n\n[Node-based Order]\nThis policy treats the locality of memory as the most important parameter.\nZonelist order is created by each zone\u0027s locality. This means lower zones\n(ex. ZONE_DMA) can be used before higher zone (ex. ZONE_NORMAL) exhausion.\nIOW. ZONE_DMA will be in the middle of zonelist.\ncurrent 2.6.21 kernel uses this.\n\nPros.\n * A user can expect local memory as much as possible.\nCons.\n * lower zone will be exhansted before higher zone. This may cause OOM_KILL.\n\nMaybe suitable if ZONE_DMA is relatively big and you never see OOM_KILL\nbecause of ZONE_DMA exhaution and you need the best locality.\n\n(example)\nassume 2 node NUMA. node(0) has ZONE_DMA/ZONE_NORMAL, node(1) has ZONE_NORMAL.\n\n*node(0)\u0027s memory allocation order:\n\n node(0)\u0027s NORMAL -\u003e node(0)\u0027s DMA -\u003e node(1)\u0027s NORMAL.\n\n*node(1)\u0027s memory allocation order:\n\n node(1)\u0027s NORMAL -\u003e node(0)\u0027s NORMAL -\u003e node(0)\u0027s DMA.\n\n[Zone-based order]\nThis policy treats the zone type as the most important parameter.\nZonelist order is created by zone-type order. This means lower zone\nnever be used bofere higher zone exhaustion.\nIOW. ZONE_DMA will be always at the tail of zonelist.\n\nPros.\n * OOM_KILL(bacause of lower zone) occurs only if the whole zones are exhausted.\nCons.\n * memory locality may not be best.\n\n(example)\nassume 2 node NUMA. node(0) has ZONE_DMA/ZONE_NORMAL, node(1) has ZONE_NORMAL.\n\n*node(0)\u0027s memory allocation order:\n\n node(0)\u0027s NORMAL -\u003e node(1)\u0027s NORMAL -\u003e node(0)\u0027s DMA.\n\n*node(1)\u0027s memory allocation order:\n\n node(1)\u0027s NORMAL -\u003e node(0)\u0027s NORMAL -\u003e node(0)\u0027s DMA.\n\nbootoption \"numa_zonelist_order\u003d\" and proc/sysctl is supporetd.\n\ncommand:\n%echo N \u003e /proc/sys/vm/numa_zonelist_order\n\nWill rebuild zonelist in Node-based order.\n\ncommand:\n%echo Z \u003e /proc/sys/vm/numa_zonelist_order\n\nWill rebuild zonelist in Zone-based order.\n\nThanks to Lee Schermerhorn, he gives me much help and codes.\n\n[Lee.Schermerhorn@hp.com: add check_highest_zone to build_zonelists_in_zone_order]\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \"jesse.barnes@intel.com\" \u003cjesse.barnes@intel.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ed0321895182ffb6ecf210e066d87911b270d587", "tree": "832bb54666f73b06e55322df40f915c5e9ef64d7", "parents": [ "13bddc2e9d591e31bf20020dc19ea6ca85de420e" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Thu Jun 28 15:55:21 2007 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Wed Jul 11 22:52:29 2007 -0400" }, "message": "security: Protection for exploiting null dereference using mmap\n\nAdd a new security check on mmap operations to see if the user is attempting\nto mmap to low area of the address space. The amount of space protected is\nindicated by the new proc tunable /proc/sys/vm/mmap_min_addr and defaults to\n0, preserving existing behavior.\n\nThis patch uses a new SELinux security class \"memprotect.\" Policy already\ncontains a number of allow rules like a_t self:process * (unconfined_t being\none of them) which mean that putting this check in the process class (its\nbest current fit) would make it useless as all user processes, which we also\nwant to protect against, would be allowed. By taking the memprotect name of\nthe new class it will also make it possible for us to move some of the other\nmemory protect permissions out of \u0027process\u0027 and into the new class next time\nwe bump the policy version number (which I also think is a good future idea)\n\nAcked-by: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nAcked-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "bf22f6fe2d72b4d7e9035be8ceb340414cf490e3", "tree": "14085d90de0428316479fe6de8a0c6d32e6e65e2", "parents": [ "4eb6bf6bfb580afaf1e1a1d30cba17a078530cf4", "93ab471889c6662b42ce7da257f31f24c08d7d9e" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Jul 11 13:28:26 2007 +1000" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Jul 11 13:28:26 2007 +1000" }, "message": "Merge branch \u0027for-2.6.23\u0027 into merge\n" }, { "commit": "d054fe3d10cc1f9aec01378c38caa32dffdd0090", "tree": "3c54ddbac87b25eb44526cf2ad4303f21dbe3cdd", "parents": [ "932cc6d4f7c35bbf70bce8cc865b6033ff49c9c0" ], "author": { "name": "Carsten Otte", "email": "cotte@de.ibm.com", "time": "Fri Jun 15 08:16:22 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 10 08:04:15 2007 +0200" }, "message": "xip sendfile removal\n\nThis patch removes xip_file_sendfile, the sendfile implementation for\nxip without replacement. Those customers that use xip on s390 are not\nusing sendfile() as far as we know, and so far s390 is the only platform\nthis could potentially be used on so far.\nHaving sendfile is not a popular feature for execute in place file\nsystems, however we have a working implementation of splice_read() based\non fs/splice.c if anyone asks for it.\nAt this point in time, it does not seem preferable to merge\nsplice_read() for xip because it causes extra maintenence effort due to\ncode duplication and it requires struct page behind the xip memory\nsegment. We\u0027d like to get rid of that in favor of supporting flash based\nembedded platforms (Monta Vista work) soon.\n\nSigned-off-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\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": "0452a4e5d021900b07ebdeecb9ed03b49f164f3f", "tree": "c03b50882723102bf51fade26f6a24d9dd0a182e", "parents": [ "5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jun 01 11:55:49 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 10 08:04:14 2007 +0200" }, "message": "sendfile: kill generic_file_sendfile()\n\nIt\u0027s no longer used.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4e99325b462ba18075768582621af74a6b79d2a5", "tree": "c10d5cca6c42dda86faa3881e406475d8d645764", "parents": [ "95511ad4342cd094e62c807f6631b9a19cc6b129" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Sun Jul 08 01:13:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 08 10:13:21 2007 -0700" }, "message": "mm: double mark_page_accessed() in read_cache_page_async()\n\nFix a post-2.6.21 regression.\n\nread_cache_page_async() has two invocations of mark_page_accessed() which will\nlaunch pages right onto the active list.\n\nRemove the first one, keeping the latter one. This avoids marking unwanted\npages active (in the retry loop).\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: 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": "d23cf676d0e9d1fdc066d2dcb7f8bc0e2d4c75bd", "tree": "6a497007f978d7c2993c0c8de1e2e01d0ad6f821", "parents": [ "c3000e031cf6a1f58228357d7c317f66e670627f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jul 06 11:17:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 06 11:45:11 2007 -0700" }, "message": "slub: remove useless EXPORT_SYMBOL\n\nkmem_cache_open is static. EXPORT_SYMBOL was leftover from some earlier\ntime period where kmem_cache_open was usable outside of slub.\n\n(Fixes powerpc build error)\n\nSigned-off-by: Chrsitoph Lameter \u003cclameter@sgi.com\u003e\nCc: Johannes Berg \u003cjohannes@sipsolutions.net\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "23c1fb52961bc24bd3a8078eefc49eed533b2b38", "tree": "48500a3495dbbf623751bc3b9e884dd25e3c86c3", "parents": [ "0da2f0f164f098bb4447c714b552ac1681b2d6e8" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Fri Jul 06 13:35:34 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 06 10:26:50 2007 -0700" }, "message": "mm: fixup /proc/vmstat output\n\nLine up the vmstat_text with zone_stat_item\n\nenum zone_stat_item {\n\t/* First 128 byte cacheline (assuming 64 bit words) */\n\tNR_FREE_PAGES,\n\tNR_INACTIVE,\n\tNR_ACTIVE,\n\nWe current have nr_active and nr_inactive reversed.\n\n[ \"OK with patch, though using initializers canbe handy to prevent such\n things in future:\n\n\tstatic const char * const vmstat_text[] \u003d {\n\t\t[NR_FREE_PAGES] \u003d \"nr_free_pages\",\n\t\t...\"\n\t\t\t\t\t\t\t - Alexey ]\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "87a927c715789853cc8331d76039a2fd657a832a", "tree": "c185e20386fd3ec8679d3d52bae822d9963df5da", "parents": [ "2bcb1b7de9eeea969a25d5f2b4511195cca9f2a2" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Jul 04 21:26:44 2007 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 05 15:54:13 2007 -0700" }, "message": "Fix slab redzone alignment\n\nCommit b46b8f19c9cd435ecac4d9d12b39d78c137ecd66 fixed a couple of bugs\nby switching the redzone to 64 bits. Unfortunately, it neglected to\nensure that the _second_ redzone, after the slab object, is aligned\ncorrectly. This caused illegal instruction faults on sparc32, which for\nsome reason not entirely clear to me are not trapped and fixed up.\n\nTwo things need to be done to fix this:\n - increase the object size, rounding up to alignof(long long) so\n that the second redzone can be aligned correctly.\n - If SLAB_STORE_USER is set but alignof(long long)\u003d\u003d8, allow a\n full 64 bits of space for the user word at the end of the buffer,\n even though we may not _use_ the whole 64 bits.\n\nThis patch should be a no-op on any 64-bit architecture or any 32-bit\narchitecture where alignof(long long) \u003d\u003d 4. Of the others, it\u0027s tested\non ppc32 by myself and a very similar patch was tested on sparc32 by\nMark Fortescue, who reported the new problem.\n\nAlso, fix the conditions for FORCED_DEBUG, which hadn\u0027t been adjusted to\nthe new sizes. Again noticed by Mark.\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dbc55faa64c12f4c9fab6e2bd131d771bc026ed1", "tree": "b43ca5aa30dbfb9ab920db07039f8c76996fd17a", "parents": [ "746976a301ac9c9aa10d7d42454f8d6cdad8ff2b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 03 09:31:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 03 13:56:13 2007 -0700" }, "message": "SLUB: Make lockdep happy by not calling add_partial with interrupts enabled during bootstrap\n\nIf we move the local_irq_enable() to the end of the function then\nadd_partial() in early_kmem_cache_node_alloc() will be called\nwith interrupts disabled like during regular operations.\n\nThis makes lockdep happy.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nTested-by: Andre Noll \u003cmaan@systemlinux.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "17022220dd70378b2f17fa9b0248f15067d88c58", "tree": "52a290cde0e3c6719df83d20ca02af4dbabfbbd6", "parents": [ "0f4915b9c5d7a35da11bfcff80ae6466cb7b9fc4" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jul 01 12:06:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 01 12:29:43 2007 -0700" }, "message": "SLAB: remove WARN_ON_ONCE for zero sized objects for 2.6.22 release\n\nWe agreed to remove the WARN_ON_ONCE before 2.6.22 is released.\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": "30acbabae38793c9c9acace4de5b1c1889570768", "tree": "c9c1741f04382803475c113865deed065e1ca0cf", "parents": [ "172d0496cd22c98ee2e4238821fa309c01685f3a" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Jun 27 14:09:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jun 28 11:34:53 2007 -0700" }, "message": "mm: kill validate_anon_vma to avoid mapcount BUG\n\nvalidate_anon_vma gave a useful check on the integrity of the anon_vma list\nwhen Andrea was developing obj rmap; but it was not enabled in SLES9\nitself, nor in mainline, until Nick changed commented-out RMAP_DEBUG to\nconfigurable CONFIG_DEBUG_VM in 2.6.17. Now Petr Vandrovec reports that\nits BUG_ON(mapcount \u003e 100000) can easily crash a CONFIG_DEBUG_VM\u003dy system.\n\nThat limit was just an arbitrary number to protect against an infinite\nloop. We could raise it to something enormous (depending on sizeof struct\nvma and size of memory?); but I rather think validate_anon_vma has outlived\nits usefulness, and is better just removed - which gives a magnificent\nperformance boost to anything like Petr\u0027s test program ;)\n\nOf course, a very long anon_vma list is bad news for preemption latency,\nand I believe there has been one recent report of such: let\u0027s not forget\nthat, but validate_anon_vma only makes it worse not better.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Petr Vandrovec \u003cpetr@vmware.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Andrea Arcangeli \u003candrea@suse.de\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "849663430268db63a9c3c7467984e4e530ded901", "tree": "376459d03c5be4757813c5d185e364307bbbbd39", "parents": [ "1e27dbe7746f3bcbcf1f9a37f31df4b886e36ce3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Jun 23 17:16:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jun 24 08:59:11 2007 -0700" }, "message": "SLUB: fix behavior if the text output of list_locations overflows PAGE_SIZE\n\nIf slabs are allocated or freed from a large set of call sites (typical for\nthe kmalloc area) then we may create more output than fits into a single\nPAGE and sysfs only gives us one page. The output should be truncated.\nThis patch fixes the checks to do the truncation properly.\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": "06b32f3ab6df4c7489729f94bdc7093c72681d4b", "tree": "07fabea840fa598e510b4da899ef7f5b06282683", "parents": [ "d2f1c0fa2b346769ac35559ae3bafccf151dd446" ], "author": { "name": "Helge Deller", "email": "deller@gmx.de", "time": "Tue Dec 19 19:28:33 2006 +0100" }, "committer": { "name": "Kyle McMartin", "email": "kyle@minerva.i.cabal.ca", "time": "Thu Jun 21 17:46:20 2007 -0400" }, "message": "[PARISC] Handle wrapping in expand_upwards()\n\nFunction expand_upwards() did not guarded against wrapping\naround to address 0. This fixes the adjtimex02 testcase from\nthe Linux Test Project on a 32bit PARISC kernel.\n\n[expand_upwards is only used on parisc and ia64; it looks like it does\n the right thing on both. --kyle]\n\nSigned-off-by: Helge Deller \u003cdeller@gmx.de\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nSigned-off-by: Kyle McMartin \u003ckyle@parisc-linux.org\u003e\n" }, { "commit": "4b356be019d0c28f67af02809df7072c1c8f7d32", "tree": "03c340e3168a1cae72fd7c96855382ac0c195da6", "parents": [ "8dab5241d06bfc9ee141ea78c56cde5070d7460d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Jun 16 10:16:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Jun 16 13:16:16 2007 -0700" }, "message": "SLUB: minimum alignment fixes\n\nIf ARCH_KMALLOC_MINALIGN is set to a value greater than 8 (SLUBs smallest\nkmalloc cache) then SLUB may generate duplicate slabs in sysfs (yes again)\nbecause the object size is padded to reach ARCH_KMALLOC_MINALIGN. Thus the\nsize of the small slabs is all the same.\n\nNo arch sets ARCH_KMALLOC_MINALIGN larger than 8 though except mips which\nfor some reason wants a 128 byte alignment.\n\nThis patch increases the size of the smallest cache if\nARCH_KMALLOC_MINALIGN is greater than 8. In that case more and more of the\nsmallest caches are disabled.\n\nIf we do that then the count of the active general caches that is displayed\non boot is not correct anymore since we may skip elements of the kmalloc\narray. So count them separately.\n\nThis approach was tested by Havard yesterday.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8dab5241d06bfc9ee141ea78c56cde5070d7460d", "tree": "dd9dc3c64c17862b169f4cbe5fd4a108d960c920", "parents": [ "679ce0ace6b1a07043bc3b405a34ddccad808886" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Sat Jun 16 10:16:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Jun 16 13:16:16 2007 -0700" }, "message": "Rework ptep_set_access_flags and fix sun4c\n\nSome changes done a while ago to avoid pounding on ptep_set_access_flags and\nupdate_mmu_cache in some race situations break sun4c which requires\nupdate_mmu_cache() to always be called on minor faults.\n\nThis patch reworks ptep_set_access_flags() semantics, implementations and\ncallers so that it\u0027s now responsible for returning whether an update is\nnecessary or not (basically whether the PTE actually changed). This allow\nfixing the sparc implementation to always return 1 on sun4c.\n\n[akpm@linux-foundation.org: fixes, cleanups]\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Mark Fortescue \u003cmark@mtfhpc.demon.co.uk\u003e\nAcked-by: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@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": "dd08c40e3e23f868eb0e49f638eb208736ec7e66", "tree": "75b2cabf36cc35d6549dbda5e53b09650ec422f7", "parents": [ "54c6ed7562d59ab238df1ec9ff76d81d7d0f0842" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Jun 16 10:15:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Jun 16 13:16:15 2007 -0700" }, "message": "SLUB slab validation: Alloc while interrupts are disabled must use GFP_ATOMIC\n\nThe data structure to manage the information gathered about functions\nallocating and freeing objects is allocated when the list_lock has already\nbeen taken. We need to allocate with GFP_ATOMIC instead of GFP_KERNEL.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d09c6b809432668371b5de9102f4f9aa6a7c79cc", "tree": "23a80218149ce732dfab1afca6abd3f370bc0131", "parents": [ "902233ee494f9d9da6dbb818316fcbf892bebbed" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Thu Jun 14 15:13:16 2007 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 15 16:18:08 2007 -0700" }, "message": "mm: Fix memory/cpu hotplug section mismatch and oops.\n\nWhen building with memory hotplug enabled and cpu hotplug disabled, we\nend up with the following section mismatch:\n\nWARNING: mm/built-in.o(.text+0x4e58): Section mismatch: reference to\n.init.text: (between \u0027free_area_init_node\u0027 and \u0027__build_all_zonelists\u0027)\n\nThis happens as a result of:\n\n -\u003e free_area_init_node()\n -\u003e free_area_init_core()\n -\u003e zone_pcp_init() \u003c-- all __meminit up to this point\n -\u003e zone_batchsize() \u003c-- marked as __cpuinit fo\n\nThis happens because CONFIG_HOTPLUG_CPU\u003dn sets __cpuinit to __init, but\nCONFIG_MEMORY_HOTPLUG\u003dy unsets __meminit.\n\nChanging zone_batchsize() to __devinit fixes this.\n\n__devinit is the only thing that is common between CONFIG_HOTPLUG_CPU\u003dy and\nCONFIG_MEMORY_HOTPLUG\u003dy. In the long run, perhaps this should be moved to\nanother section identifier completely. Without this, memory hot-add\nof offline nodes (via hotadd_new_pgdat()) will oops if CPU hotplug is\nnot also enabled.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n\n--\n\n mm/page_alloc.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)\n" }, { "commit": "c19c03fc749147f565e807fa65f1729066800571", "tree": "d5ba2eb6d43b5001c93c42523fc5b2431ef61664", "parents": [ "3c8c90ab8810a8ebb38a5f1dde2595b750d5adff" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Mon Jun 04 15:15:35 2007 +1000" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu Jun 14 22:29:56 2007 +1000" }, "message": "[POWERPC] unmap_vm_area becomes unmap_kernel_range for the public\n\nThis makes unmap_vm_area static and a wrapper around a new\nexported unmap_kernel_range that takes an explicit range instead\nof a vm_area struct.\n\nThis makes it more versatile for code that wants to play with kernel\npage tables outside of the standard vmalloc area.\n\n(One example is some rework of the PowerPC PCI IO space mapping\ncode that depends on that patch and removes some code duplication\nand horrible abuse of forged struct vm_struct).\n\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "193faea9280a809cc30e81d7e503e01b1d7b7042", "tree": "d4b80d4795ac1e708b8a13d45d571383617b761c", "parents": [ "4249e08e92647b406422553bfb16276b2bf849aa" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Fri Jun 08 13:46:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 08 17:23:33 2007 -0700" }, "message": "Move three functions that are only needed for CONFIG_MEMORY_HOTPLUG\n\ninto the appropriate #ifdef.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\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": "272c1d21d6fe42979068e14c04fb60fb6045ad74", "tree": "6a365c67ed8575d15a59aa2183df609368359724", "parents": [ "a17627ef8833ac30622a7b39b7be390e1b174405" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 08 13:46:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 08 17:23:33 2007 -0700" }, "message": "SLUB: return ZERO_SIZE_PTR for kmalloc(0)\n\nInstead of returning the smallest available object return ZERO_SIZE_PTR.\n\nA ZERO_SIZE_PTR can be legitimately used as an object pointer as long as it\nis not deferenced. The dereference of ZERO_SIZE_PTR causes a distinctive\nfault. kfree can handle a ZERO_SIZE_PTR in the same way as NULL.\n\nThis enables functions to use zero sized object. e.g. n \u003d number of objects.\n\n\tobjects \u003d kmalloc(n * sizeof(object));\n\n\tfor (i \u003d 0; i \u003c n; i++)\n\t\tobjects[i].x \u003d y;\n\n\tkfree(objects);\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "3cdc0ed0cea50ea08dd146c1bbc82b1bcc2e1b80", "tree": "4eac1f33e52f3efeaf4cbd181877ebd25f354ee1", "parents": [ "a210906c1b791af1434323f69427286039c9c8b9" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.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": "slab: fix alien cache handling\n\ncache_free_alien must be called regardless if we use alien caches or not.\ncache_free_alien() will do the right thing if there are no alien caches\navailable.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Pekka J 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": "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": "33d63bd83bf9aa6b662a376a96b825acba721e8f", "tree": "469eadf218a6e435b06eb151c88340c0adb7b83e", "parents": [ "05a117847b43d44f336bbf272a1063661431a5e5" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Thu Jun 07 11:32:52 2007 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@hera.kernel.org", "time": "Fri Jun 08 02:43:51 2007 +0000" }, "message": "sh: memory hot-add for sparsemem users support.\n\nThis enables simple hotplug support for sparsemem users. Presently\nthis only permits memory being added in to node 0 on ZONE_NORMAL.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "27390bc335ff86d92c3819cc28035fde23d1a9c2", "tree": "2812436fe897a1211c244f85db2a4d79fff673ff", "parents": [ "ac140a8f8396504b33ddafb7309feca77bff8497" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 01 00:47:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 01 08:18:30 2007 -0700" }, "message": "SLUB: fix locking for hotplug callbacks\n\nHotplug callbacks are performed with interrupts enabled. Slub requires\ninterrupts to be disabled for flushing caches.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Michal Piotrowski \u003cmichal.k.k.piotrowski@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "13466c8419c3ab3ccd5e905eef53ca49c6c201be", "tree": "e39805fa48c00af09b76e0fc6a3a23b97a8b364e", "parents": [ "6cd8fa87fbf31b2ab77b8aaec497e7f6a3757578" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Fri Jun 01 00:46:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 01 08:18:29 2007 -0700" }, "message": "memory hotplug: fix unnecessary calling of init_currenty_empty_zone()\n\nzone-\u003epresent_pages is updated in online_pages(). But, __add_zone() can be\ncalled twice or more before calling online_pages(). So,\ninit_currenty_empty_zone() can be called unnecessary times. It is cause of\nmemory leak of zone\u0027s wait_table.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "2e1c49db4c640b35df13889b86b9d62215ade4b6" }