)]}' { "log": [ { "commit": "b1e75df45a3d8a490b8648e44632debc5eea04b1", "tree": "4ee3aaa516675ca9715d673c4399f1b517d4a690", "parents": [ "15f9a3f3e199647fe0cac19302c5033cf031372d" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jan 17 01:47:59 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jan 17 01:47:59 2011 -0500" }, "message": "tidy up around finish_automount()\n\ndo_add_mount() and mnt_clear_expiry() are not needed outside of\nnamespace.c anymore, now that namei has finish_automount() to\nuse.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "15f9a3f3e199647fe0cac19302c5033cf031372d", "tree": "38a39510439f2913dbdfcfd2de4ffacc8214875d", "parents": [ "19a167af7c97248ec646552ebc9140bc6aa3552a" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jan 17 01:41:58 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jan 17 01:41:58 2011 -0500" }, "message": "don\u0027t drop newmnt on error in do_add_mount()\n\nThat gets rid of the kludge in finish_automount() - we need\nto keep refcount on the vfsmount as-is until we evict it from\nexpiry list.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "19a167af7c97248ec646552ebc9140bc6aa3552a", "tree": "a521153c80fa6e40b2b4983c5bba21c2e96d1864", "parents": [ "e78bf5e6cbe837daa6ab628a5f679548742994d3" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jan 17 01:35:23 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jan 17 01:35:23 2011 -0500" }, "message": "Take the completion of automount into new helper\n\n... and shift it from namei.c to namespace.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7e3d0eb0b028ed9e9384e6afcae2f22993bbdf25", "tree": "37bbffdfc6d380d04c294fa43d75697694f44d4d", "parents": [ "f8b18087fd3277e424a24e13ce0edf30abe97ce0" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jan 16 16:32:11 2011 -0500" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jan 16 14:59:45 2011 -0800" }, "message": "VFS: Fix UP compile error in fs/namespace.c\n\nmnt_longterm is there only on SMP\n\nReported-and-tested-by: Joachim Eastwood \u003cmanabian@gmail.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f03c65993b98eeb909a4012ce7833c5857d74755", "tree": "a6dd5e353889b7fe4ab87c54170d09443d788fec", "parents": [ "7b8a53fd815deb39542085897743fa0063f9fe06" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Jan 14 22:30:21 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jan 16 13:47:07 2011 -0500" }, "message": "sanitize vfsmount refcounting changes\n\nInstead of splitting refcount between (per-cpu) mnt_count\nand (SMP-only) mnt_longrefs, make all references contribute\nto mnt_count again and keep track of how many are longterm\nones.\n\nAccounting rules for longterm count:\n\t* 1 for each fs_struct.root.mnt\n\t* 1 for each fs_struct.pwd.mnt\n\t* 1 for having non-NULL -\u003emnt_ns\n\t* decrement to 0 happens only under vfsmount lock exclusive\n\nThat allows nice common case for mntput() - since we can\u0027t drop the\nfinal reference until after mnt_longterm has reached 0 due to the rules\nabove, mntput() can grab vfsmount lock shared and check mnt_longterm.\nIf it turns out to be non-zero (which is the common case), we know\nthat this is not the final mntput() and can just blindly decrement\npercpu mnt_count. Otherwise we grab vfsmount lock exclusive and\ndo usual decrement-and-check of percpu mnt_count.\n\nFor fs_struct.c we have mnt_make_longterm() and mnt_make_shortterm();\nnamespace.c uses the latter in places where we don\u0027t already hold\nvfsmount lock exclusive and opencodes a few remaining spots where\nwe need to manipulate mnt_longterm.\n\nNote that we mostly revert the code outside of fs/namespace.c back\nto what we used to have; in particular, normal code doesn\u0027t need\nto care about two kinds of references, etc. And we get to keep\nthe optimization Nick\u0027s variant had bought us...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7b8a53fd815deb39542085897743fa0063f9fe06", "tree": "1fe7d7f6192b3300a12d2e6af80b9601f23f94f8", "parents": [ "b650c858c26bd9ba29ebc82d30f09355845a294a" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 15 20:08:44 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jan 16 13:47:01 2011 -0500" }, "message": "fix old umount_tree() breakage\n\nExpiry-related code calls umount_tree() several times with\nthe same list to collect vfsmounts to. Which is fine, except\nthat umount_tree() implicitly assumed that the list would\nbe empty on each call - it moves the victims over there and\nthen iterates through the list kicking them out. It\u0027s *almost*\nidempotent, so everything nearly worked. However, mnt-\u003eghosts\nhandling (and thus expirability checks) had been broken - that\npart was not idempotent...\n\nThe fix is trivial - use local temporary list, splice it to\nthe the collector list when we are through.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ea5b778a8b98c85a87d66bf844904f9c3802b869", "tree": "baa56cbe1a907d76341f2cad53e16569cc1d3288", "parents": [ "ab90911ff90cdab59b31c045c3f0ae480d14f29d" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Jan 14 19:10:03 2011 +0000" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 15 20:07:48 2011 -0500" }, "message": "Unexport do_add_mount() and add in follow_automount(), not -\u003ed_automount()\n\nUnexport do_add_mount() and make -\u003ed_automount() return the vfsmount to be\nadded rather than calling do_add_mount() itself. follow_automount() will then\ndo the addition.\n\nThis slightly complicates things as -\u003ed_automount() normally wants to add the\nnew vfsmount to an expiration list and start an expiration timer. The problem\nwith that is that the vfsmount will be deleted if it has a refcount of 1 and\nthe timer will not repeat if the expiration list is empty.\n\nTo this end, we require the vfsmount to be returned from d_automount() with a\nrefcount of (at least) 2. One of these refs will be dropped unconditionally.\nIn addition, follow_automount() must get a 3rd ref around the call to\ndo_add_mount() lest it eat a ref and return an error, leaving the mount we\nhave open to being expired as we would otherwise have only 1 ref on it.\n\nd_automount() should also add the the vfsmount to the expiration list (by\ncalling mnt_set_expiry()) and start the expiration timer before returning, if\nthis mechanism is to be used. The vfsmount will be unlinked from the\nexpiration list by follow_automount() if do_add_mount() fails.\n\nThis patch also fixes the call to do_add_mount() for AFS to propagate the mount\nflags from the parent vfsmount.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "cc53ce53c86924bfe98a12ea20b7465038a08792", "tree": "3c9a4923dd9f413c46bfa83a20cb579446df6deb", "parents": [ "9875cf806403fae66b2410a3c2cc820d97731e04" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Jan 14 18:45:26 2011 +0000" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 15 20:07:31 2011 -0500" }, "message": "Add a dentry op to allow processes to be held during pathwalk transit\n\nAdd a dentry op (d_manage) to permit a filesystem to hold a process and make it\nsleep when it tries to transit away from one of that filesystem\u0027s directories\nduring a pathwalk. The operation is keyed off a new dentry flag\n(DCACHE_MANAGE_TRANSIT).\n\nThe filesystem is allowed to be selective about which processes it holds and\nwhich it permits to continue on or prohibits from transiting from each flagged\ndirectory. This will allow autofs to hold up client processes whilst letting\nits userspace daemon through to maintain the directory or the stuff behind it\nor mounted upon it.\n\nThe -\u003ed_manage() dentry operation:\n\n\tint (*d_manage)(struct path *path, bool mounting_here);\n\ntakes a pointer to the directory about to be transited away from and a flag\nindicating whether the transit is undertaken by do_add_mount() or\ndo_move_mount() skipping through a pile of filesystems mounted on a mountpoint.\n\nIt should return 0 if successful and to let the process continue on its way;\n-EISDIR to prohibit the caller from skipping to overmounted filesystems or\nautomounting, and to use this directory; or some other error code to return to\nthe user.\n\n-\u003ed_manage() is called with namespace_sem writelocked if mounting_here is true\nand no other locks held, so it may sleep. However, if mounting_here is true,\nit may not initiate or wait for a mount or unmount upon the parameter\ndirectory, even if the act is actually performed by userspace.\n\nWithin fs/namei.c, follow_managed() is extended to check with d_manage() first\non each managed directory, before transiting away from it or attempting to\nautomount upon it.\n\nfollow_down() is renamed follow_down_one() and should only be used where the\nfilesystem deliberately intends to avoid management steps (e.g. autofs).\n\nA new follow_down() is added that incorporates the loop done by all other\ncallers of follow_down() (do_add/move_mount(), autofs and NFSD; whilst AFS, NFS\nand CIFS do use it, their use is removed by converting them to use\nd_automount()). The new follow_down() calls d_manage() as appropriate. It\nalso takes an extra parameter to indicate if it is being called from mount code\n(with namespace_sem writelocked) which it passes to d_manage(). follow_down()\nignores automount points so that it can be used to mount on them.\n\n__follow_mount_rcu() is made to abort rcu-walk mode if it hits a directory with\nDCACHE_MANAGE_TRANSIT set on the basis that we\u0027re probably going to have to\nsleep. It would be possible to enter d_manage() in rcu-walk mode too, and have\nthat determine whether to abort or not itself. That would allow the autofs\ndaemon to continue on in rcu-walk mode.\n\nNote that DCACHE_MANAGE_TRANSIT on a directory should be cleared when it isn\u0027t\nrequired as every tranist from that directory will cause d_manage() to be\ninvoked. It can always be set again when necessary.\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\nWHAT THIS MEANS FOR AUTOFS\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\n\nAutofs currently uses the lookup() inode op and the d_revalidate() dentry op to\ntrigger the automounting of indirect mounts, and both of these can be called\nwith i_mutex held.\n\nautofs knows that the i_mutex will be held by the caller in lookup(), and so\ncan drop it before invoking the daemon - but this isn\u0027t so for d_revalidate(),\nsince the lock is only held on _some_ of the code paths that call it. This\nmeans that autofs can\u0027t risk dropping i_mutex from its d_revalidate() function\nbefore it calls the daemon.\n\nThe bug could manifest itself as, for example, a process that\u0027s trying to\nvalidate an automount dentry that gets made to wait because that dentry is\nexpired and needs cleaning up:\n\n\tmkdir S ffffffff8014e05a 0 32580 24956\n\tCall Trace:\n\t [\u003cffffffff885371fd\u003e] :autofs4:autofs4_wait+0x674/0x897\n\t [\u003cffffffff80127f7d\u003e] avc_has_perm+0x46/0x58\n\t [\u003cffffffff8009fdcf\u003e] autoremove_wake_function+0x0/0x2e\n\t [\u003cffffffff88537be6\u003e] :autofs4:autofs4_expire_wait+0x41/0x6b\n\t [\u003cffffffff88535cfc\u003e] :autofs4:autofs4_revalidate+0x91/0x149\n\t [\u003cffffffff80036d96\u003e] __lookup_hash+0xa0/0x12f\n\t [\u003cffffffff80057a2f\u003e] lookup_create+0x46/0x80\n\t [\u003cffffffff800e6e31\u003e] sys_mkdirat+0x56/0xe4\n\nversus the automount daemon which wants to remove that dentry, but can\u0027t\nbecause the normal process is holding the i_mutex lock:\n\n\tautomount D ffffffff8014e05a 0 32581 1 32561\n\tCall Trace:\n\t [\u003cffffffff80063c3f\u003e] __mutex_lock_slowpath+0x60/0x9b\n\t [\u003cffffffff8000ccf1\u003e] do_path_lookup+0x2ca/0x2f1\n\t [\u003cffffffff80063c89\u003e] .text.lock.mutex+0xf/0x14\n\t [\u003cffffffff800e6d55\u003e] do_rmdir+0x77/0xde\n\t [\u003cffffffff8005d229\u003e] tracesys+0x71/0xe0\n\t [\u003cffffffff8005d28d\u003e] tracesys+0xd5/0xe0\n\nwhich means that the system is deadlocked.\n\nThis patch allows autofs to hold up normal processes whilst the daemon goes\nahead and does things to the dentry tree behind the automouter point without\nrisking a deadlock as almost no locks are held in d_manage() and none in\nd_automount().\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nWas-Acked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "b3e19d924b6eaf2ca7d22cba99a517c5171007b6", "tree": "8c1fa4074114a883a4e2de2f7d12eb29ed91bdf1", "parents": [ "c6653a838b1b2738561aff0b8c0f62a9b714bdd9" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:11 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:33 2011 +1100" }, "message": "fs: scale mntget/mntput\n\nThe problem that this patch aims to fix is vfsmount refcounting scalability.\nWe need to take a reference on the vfsmount for every successful path lookup,\nwhich often go to the same mount point.\n\nThe fundamental difficulty is that a \"simple\" reference count can never be made\nscalable, because any time a reference is dropped, we must check whether that\nwas the last reference. To do that requires communication with all other CPUs\nthat may have taken a reference count.\n\nWe can make refcounts more scalable in a couple of ways, involving keeping\ndistributed counters, and checking for the global-zero condition less\nfrequently.\n\n- check the global sum once every interval (this will delay zero detection\n for some interval, so it\u0027s probably a showstopper for vfsmounts).\n\n- keep a local count and only taking the global sum when local reaches 0 (this\n is difficult for vfsmounts, because we can\u0027t hold preempt off for the life of\n a reference, so a counter would need to be per-thread or tied strongly to a\n particular CPU which requires more locking).\n\n- keep a local difference of increments and decrements, which allows us to sum\n the total difference and hence find the refcount when summing all CPUs. Then,\n keep a single integer \"long\" refcount for slow and long lasting references,\n and only take the global sum of local counters when the long refcount is 0.\n\nThis last scheme is what I implemented here. Attached mounts and process root\nand working directory references are \"long\" references, and everything else is\na short reference.\n\nThis allows scalable vfsmount references during path walking over mounted\nsubtrees and unattached (lazy umounted) mounts with processes still running\nin them.\n\nThis results in one fewer atomic op in the fastpath: mntget is now just a\nper-CPU inc, rather than an atomic inc; and mntput just requires a spinlock\nand non-atomic decrement in the common case. However code is otherwise bigger\nand heavier, so single threaded performance is basically a wash.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "c6653a838b1b2738561aff0b8c0f62a9b714bdd9", "tree": "42ab45defd51c23dde7b91bafe62a28509befaf8", "parents": [ "9d55c369bb5e695e629bc35cba2ef607755b3bee" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:10 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:33 2011 +1100" }, "message": "fs: rename vfsmount counter helpers\n\nSuggested by Andreas, mnt_ prefix is clearer namespace, follows kernel\nconventions better, and is easier for tab complete. I introduced these\nnames so I\u0027ll admit they were not good choices.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff", "tree": "f02e7ee57e6060f0af1bcda281baf2972d2da72f", "parents": [ "c28cc36469554dc55540f059fbdc7fa22a2c31fc" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:54 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:28 2011 +1100" }, "message": "fs: dcache remove d_mounted\n\nRather than keep a d_mounted count in the dentry, set a dentry flag instead.\nThe flag can be cleared by checking the hash table to see if there are any\nmounts left, which is not time critical because it is performed at detach time.\n\nThe mounted state of a dentry is only used to speculatively take a look in the\nmount hash table if it is set -- before following the mount, vfsmount lock is\ntaken and mount re-checked without races.\n\nThis saves 4 bytes on 32-bit, nothing on 64-bit but it does provide a hole I\nmight use later (and some configs have larger than 32-bit spinlocks which might\nmake use of the hole).\n\nAutofs4 conversion and changelog by Ian Kent \u003craven@themaw.net\u003e:\nIn autofs4, when expring direct (or offset) mounts we need to ensure that we\nblock user path walks into the autofs mount, which is covered by another mount.\nTo do this we clear the mounted status so that follows stop before walking into\nthe mount and are essentially blocked until the expire is completed. The\nautomount daemon still finds the correct dentry for the umount due to the\nfollow mount logic in fs/autofs4/root.c:autofs4_follow_link(), which is set as\nan inode operation for direct and offset mounts only and is called following\nthe lookup that stopped at the covered mount.\n\nAt the end of the expire the covering mount probably has gone away so the\nmounted status need not be restored. But we need to check this and only restore\nthe mounted status if the expire failed.\n\nXXX: autofs may not work right if we have other mounts go over the top of it?\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "451a3c24b0135bce54542009b5fde43846c7cf67", "tree": "f0fbbcc155aef2a1ffcb8aa593fe7a966d0e6900", "parents": [ "55f6561c6941713ab5ae9180525b026dd40b7d14" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Nov 17 16:26:55 2010 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 17 08:59:32 2010 -0800" }, "message": "BKL: remove extraneous #include \u003csmp_lock.h\u003e\n\nThe big kernel lock has been removed from all these files at some point,\nleaving only the #include.\n\nRemove this too as a cleanup.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "be1a16a0ae29a7c90081a657b64aa51cb1a65a27", "tree": "18bef9178b1142d839b906ce3bf38c92eb650ee8", "parents": [ "89b0fc38cca4e6c92a90b58960881ffc5dddd89c" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Tue Oct 05 12:31:09 2010 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Oct 25 21:24:16 2010 -0400" }, "message": "vfs: fix infinite loop caused by clone_mnt race\n\nIf clone_mnt() happens while mnt_make_readonly() is running, the\ncloned mount might have MNT_WRITE_HOLD flag set, which results in\nmnt_want_write() spinning forever on this mount.\n\nNeeds CAP_SYS_ADMIN to trigger deliberately and unlikely to happen\naccidentally. But if it does happen it can hang the machine.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "6841c05021236b8d394cc6c41aa6ae17623aef13", "tree": "1171ba379a22353b5be526c3eedbaf50f614042a", "parents": [ "38d018dba3f725b969f196550d92a6ec1c092428" ], "author": { "name": "Jan Blunck", "email": "jblunck@infradead.org", "time": "Wed Feb 24 13:25:35 2010 +0100" }, "committer": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Mon Oct 04 21:10:43 2010 +0200" }, "message": "BKL: Remove BKL from do_new_mount()\n\nAfter pushing down the BKL to the get_sb/fill_super operations of the\nfilesystems that still make usage of the BKL it is safe to remove it from\ndo_new_mount().\n\nI\u0027ve read through all the code formerly covered by the BKL inside\ndo_kern_mount() and have satisfied myself that it doesn\u0027t need the BKL\nany more.\n\nSigned-off-by: Jan Blunck \u003cjblunck@infradead.org\u003e\nCc: Matthew Wilcox \u003cmatthew@wil.cx\u003e\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\n" }, { "commit": "7a2e8a8faab76386d8eaae9ded739ee5615be174", "tree": "404b9c185f32e3e6ef871bb85c217314e4aff3e8", "parents": [ "2bfc96a127bc1cc94d26bfaa40159966064f9c8c" ], "author": { "name": "Valerie Aurora", "email": "vaurora@redhat.com", "time": "Thu Aug 26 11:07:22 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 07 13:46:20 2010 -0700" }, "message": "VFS: Sanity check mount flags passed to change_mnt_propagation()\n\nSanity check the flags passed to change_mnt_propagation(). Exactly\none flag should be set. Return EINVAL otherwise.\n\nUserspace can pass in arbitrary combinations of MS_* flags to mount().\ndo_change_type() is called if any of MS_SHARED, MS_PRIVATE, MS_SLAVE,\nor MS_UNBINDABLE is set. do_change_type() clears MS_REC and then\ncalls change_mnt_propagation() with the rest of the user-supplied\nflags. change_mnt_propagation() clearly assumes only one flag is set\nbut do_change_type() does not check that this is true. For example,\nmount() with flags MS_SHARED | MS_RDONLY does not actually make the\nmount shared or read-only but does clear MNT_UNBINDABLE.\n\nSigned-off-by: Valerie Aurora \u003cvaurora@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "99b7db7b8ffd6bb755eb0a175596421a0b581cb2", "tree": "cbaf57d252f0852f967d3fd5a5f87472964a01fe", "parents": [ "6416ccb7899960868f5016751fb81bf25213d24f" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Wed Aug 18 04:37:39 2010 +1000" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 18 08:35:48 2010 -0400" }, "message": "fs: brlock vfsmount_lock\n\nfs: brlock vfsmount_lock\n\nUse a brlock for the vfsmount lock. It must be taken for write whenever\nmodifying the mount hash or associated fields, and may be taken for read when\nperforming mount hash lookups.\n\nA new lock is added for the mnt-id allocator, so it doesn\u0027t need to take\nthe heavy vfsmount write-lock.\n\nThe number of atomics should remain the same for fastpath rlock cases, though\ncode would be slightly slower due to per-cpu access. Scalability is not not be\nmuch improved in common cases yet, due to other locks (ie. dcache_lock) getting\nin the way. However path lookups crossing mountpoints should be one case where\nscalability is improved (currently requiring the global lock).\n\nThe slowpath is slower due to use of brlock. On a 64 core, 64 socket, 32 node\nAltix system (high latency to remote nodes), a simple umount microbenchmark\n(mount --bind mnt mnt2 ; umount mnt2 loop 1000 times), before this patch it\ntook 6.8s, afterwards took 7.1s, about 5% slower.\n\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "532490f0a5350fd92d838b7430a4c846bc8eac3f", "tree": "cbc3c81a492928c07c9110e95a0c965fc59418a6", "parents": [ "8df9d1a4142311c084ffeeacb67cd34d190eff74" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Mon Aug 02 13:46:56 2010 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 11 00:29:47 2010 -0400" }, "message": "vfs: remove unused MNT_STRICTATIME\n\nCommit d0adde574b8487ef30f69e2d08bba769e4be513f added MNT_STRICTATIME\nbut it isn\u0027t actually used (MS_STRICTATIME clears MNT_RELATIME and\nMNT_NOATIME rather than setting any mount flag).\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "f7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79", "tree": "dc9b09188bab35320200f318b5e7b52f24dc43ad", "parents": [ "542ce7a9bc6b3838832ae0f4f8de30c667af8ff3" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Tue Aug 10 11:41:36 2010 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 11 00:28:20 2010 -0400" }, "message": "vfs: add helpers to get root and pwd\n\nAdd three helpers that retrieve a refcounted copy of the root and cwd\nfrom the supplied fs_struct.\n\n get_fs_root()\n get_fs_pwd()\n get_fs_root_and_pwd()\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "8c8946f509a494769a8c602b5ed189df01917d39", "tree": "dfd96bd6ca5ea6803c6d77f65ba37e04f78b2d3b", "parents": [ "5f248c9c251c60af3403902b26e08de43964ea0b", "1968f5eed54ce47bde488fd9a450912e4a2d7138" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 11:39:13 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 11:39:13 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.infradead.org/users/eparis/notify\n\n* \u0027for-linus\u0027 of git://git.infradead.org/users/eparis/notify: (132 commits)\n fanotify: use both marks when possible\n fsnotify: pass both the vfsmount mark and inode mark\n fsnotify: walk the inode and vfsmount lists simultaneously\n fsnotify: rework ignored mark flushing\n fsnotify: remove global fsnotify groups lists\n fsnotify: remove group-\u003emask\n fsnotify: remove the global masks\n fsnotify: cleanup should_send_event\n fanotify: use the mark in handler functions\n audit: use the mark in handler functions\n dnotify: use the mark in handler functions\n inotify: use the mark in handler functions\n fsnotify: send fsnotify_mark to groups in event handling functions\n fsnotify: Exchange list heads instead of moving elements\n fsnotify: srcu to protect read side of inode and vfsmount locks\n fsnotify: use an explicit flag to indicate fsnotify_destroy_mark has been called\n fsnotify: use _rcu functions for mark list traversal\n fsnotify: place marks on object in order of group memory address\n vfs/fsnotify: fsnotify_close can delay the final work in fput\n fsnotify: store struct file not struct path\n ...\n\nFix up trivial delete/modify conflict in fs/notify/inotify/inotify.c.\n" }, { "commit": "7a4dec53897ecd3367efb1e12fe8a4edc47dc0e9", "tree": "31d4639522e1453a7f5c38aa2436ffdd6df5c60b", "parents": [ "4f331f01b9c43bf001d3ffee578a97a1e0633eac" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Aug 09 12:05:43 2010 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Aug 09 16:49:01 2010 -0400" }, "message": "Fix sget() race with failing mount\n\nIf sget() finds a matching superblock being set up, it\u0027ll\ngrab an active reference to it and grab s_umount. That\u0027s\nfine - we\u0027ll wait for completion of foofs_get_sb() that way.\nHowever, if said foofs_get_sb() fails we\u0027ll end up holding\nthe halfway-created superblock. deactivate_locked_super()\ncalled by foofs_get_sb() will just unlock the sucker since\nwe are holding another active reference to it.\n\nWhat we need is a way to tell if superblock has been successfully\nset up. Unfortunately, neither -\u003es_root nor the check for\nMS_ACTIVE quite fit. Cheap and easy way, suitable for backport:\nnew flag set by the (only) caller of -\u003eget_sb(). If that flag\nisn\u0027t present by the time sget() grabbed s_umount on preexisting\nsuperblock it has found, it\u0027s seeing a stillborn and should\njust bury it with deactivate_locked_super() (and repeat the search).\n\nLonger term we want to set that flag in -\u003eget_sb() instances (and\ncheck for it to distinguish between \"sget() found us a live sb\"\nand \"sget() has allocated an sb, we need to set it up\" in there,\ninstead of checking -\u003es_root as we do now).\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: stable@kernel.org\n" }, { "commit": "ca9c726eea013394d1e846331b117effb21ead83", "tree": "de2319fb43b4fa16d07ecbcd75022cdaf9a757e1", "parents": [ "0d48b7f01f442bc88a69aa98f3b6b015f2817608" ], "author": { "name": "Andreas Gruenbacher", "email": "agruen@suse.de", "time": "Thu Dec 17 21:24:27 2009 -0500" }, "committer": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Jul 28 09:58:57 2010 -0400" }, "message": "fsnotify: Infrastructure for per-mount watches\n\nPer-mount watches allow groups to listen to fsnotify events on an entire\nmount. This patch simply adds and initializes the fields needed in the\nvfsmount struct to make this happen.\n\nSigned-off-by: Andreas Gruenbacher \u003cagruen@suse.de\u003e\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "2504c5d63b811b71bbaa8d5d5af163e698f4df1f", "tree": "4ff736af6b00fd5cbf0cd6a4d6bbcadb6dde9bd8", "parents": [ "ba643f04cdda170215c8820acd3e201936fc512d" ], "author": { "name": "Andreas Gruenbacher", "email": "agruen@suse.de", "time": "Thu Dec 17 21:24:27 2009 -0500" }, "committer": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Jul 28 09:58:57 2010 -0400" }, "message": "fsnotify/vfsmount: add fsnotify fields to struct vfsmount\n\nThis patch adds the list and mask fields needed to support vfsmount marks.\nThese are the same fields fsnotify needs on an inode. They are not used,\njust declared and we note where the cleanup hook should be (the function is\nnot yet defined)\n\nSigned-off-by: Andreas Gruenbacher \u003cagruen@suse.de\u003e\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "539c99fd7fc28f8db257c713c10fb4aceadf8887", "tree": "e603e48ac816cde56e4872e0f7bcdfe7bd33f3b3", "parents": [ "ba2e1c5f25a99dec3873745031ad23ce3fd79bff", "4d09ec0f705cf88a12add029c058b53f288cfaa2" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue May 18 08:57:00 2010 +1000" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue May 18 08:57:00 2010 +1000" }, "message": "Merge branch \u0027next\u0027 into for-linus\n" }, { "commit": "d83c49f3e36cecd2e8823b6c48ffba083b8a5704", "tree": "a304de4eb43652d2a9528d4b43f798ab821c8b93", "parents": [ "6a251b0ab67989f468f4cb65179e0cf40cf8c295" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Apr 30 17:17:09 2010 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat May 15 07:16:33 2010 -0400" }, "message": "Fix the regression created by \"set S_DEAD on unlink()...\" commit\n\n1) i_flags simply doesn\u0027t work for mount/unlink race prevention;\nwe may have many links to file and rm on one of those obviously\nshouldn\u0027t prevent bind on top of another later on. To fix it\nright way we need to mark _dentry_ as unsuitable for mounting\nupon; new flag (DCACHE_CANT_MOUNT) is protected by d_flags and\ni_mutex on the inode in question. Set it (with dont_mount(dentry))\nin unlink/rmdir/etc., check (with cant_mount(dentry)) in places\nin namespace.c that used to check for S_DEAD. Setting S_DEAD\nis still needed in places where we used to set it (for directories\ngetting killed), since we rely on it for readdir/rmdir race\nprevention.\n\n2) rename()/mount() protection has another bogosity - we unhash\nthe target before we\u0027d checked that it\u0027s not a mountpoint. Fixed.\n\n3) ancient bogosity in pivot_root() - we locked i_mutex on the\nright directory, but checked S_DEAD on the different (and wrong)\none. Noticed and fixed.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "91a9420f5826db482030c21eca8c507271bbc441", "tree": "e5e400622884c8c0cd373c51ee4a3822c853aaa5", "parents": [ "3db291017753e539af64c8bab373785f34e43ed2" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Apr 07 15:14:45 2010 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 12 12:18:32 2010 +1000" }, "message": "security: remove dead hook sb_post_pivotroot\n\nUnused hook. Remove.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "3db291017753e539af64c8bab373785f34e43ed2", "tree": "e6759c7dea1774465b6bf2860a0c2f283c0b34fa", "parents": [ "82dab10453d65ad9ca551de5b8925673ca05c7e9" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Apr 07 15:14:39 2010 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 12 12:18:31 2010 +1000" }, "message": "security: remove dead hook sb_post_addmount\n\nUnused hook. Remove.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "82dab10453d65ad9ca551de5b8925673ca05c7e9", "tree": "942bf24adb67b534fa3080dbbfa1ffe33b7c16bd", "parents": [ "4b61d12c84293ac061909f27f567c1905e4d90e3" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Apr 07 15:14:33 2010 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 12 12:18:30 2010 +1000" }, "message": "security: remove dead hook sb_post_remount\n\nUnused hook. Remove.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "4b61d12c84293ac061909f27f567c1905e4d90e3", "tree": "dfab10311d1b6be7667600307c72379c6779d32d", "parents": [ "231923bd0e06cba69f7c2028f4a68602b8d22160" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Apr 07 15:14:27 2010 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 12 12:18:30 2010 +1000" }, "message": "security: remove dead hook sb_umount_busy\n\nUnused hook. Remove.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "231923bd0e06cba69f7c2028f4a68602b8d22160", "tree": "91e3864e87f3de86de8ad0ed55a829cbdf797545", "parents": [ "353633100d8d684ac0acae4ce93fb833f92881f4" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Apr 07 15:14:21 2010 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 12 12:18:29 2010 +1000" }, "message": "security: remove dead hook sb_umount_close\n\nUnused hook. Remove.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "353633100d8d684ac0acae4ce93fb833f92881f4", "tree": "d45effdd09f5ef2f2c44bbcfcca8751cc5cdbd7d", "parents": [ "c1a7368a6f0b18b10fdec87972da680ebdf03794" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Apr 07 15:14:15 2010 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 12 12:18:28 2010 +1000" }, "message": "security: remove sb_check_sb hooks\n\nUnused hook. Remove it.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "db1f05bb85d7966b9176e293f3ceead1cb8b5d79", "tree": "65a1d746f84cb8aa9be2a69c59eb627859b9fa0d", "parents": [ "440b3c6c160f7d0a985f24ad1f4c24e00ee2d936" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Wed Feb 10 12:15:53 2010 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:08:00 2010 -0500" }, "message": "vfs: add NOFOLLOW flag to umount(2)\n\nAdd a new UMOUNT_NOFOLLOW flag to umount(2). This is needed to prevent\nsymlink attacks in unprivileged unmounts (fuse, samba, ncpfs).\n\nAdditionally, return -EINVAL if an unknown flag is used (and specify\nan explicitly unused flag: UMOUNT_UNUSED). This makes it possible for\nthe caller to determine if a flag is supported or not.\n\nCC: Eugene Teo \u003ceugene@redhat.com\u003e\nCC: Michael Kerrisk \u003cmtk.manpages@gmail.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "8089352a13b785d4e0df63d87bd2b71c76bb9aee", "tree": "e84db2c2a5c2095091d2012c00078023b90a3490", "parents": [ "d498b25a4f877be535246c4e5b6ee5890781a477" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Feb 05 09:30:46 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:08:00 2010 -0500" }, "message": "Mirror MS_KERNMOUNT in -\u003emnt_flags\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "d498b25a4f877be535246c4e5b6ee5890781a477", "tree": "15c92bc7265bc615604c722e08195c728369fab7", "parents": [ "47cd813f2984569570021ce3d34cdf9cb20aa6a2" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Feb 05 02:21:06 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:07:59 2010 -0500" }, "message": "get rid of useless vfsmount_lock use in put_mnt_ns()\n\nIt hadn\u0027t been needed since we\u0027d sanitized the logics in\nmark_mounts_for_expiry() (which, in turn, used to be a\nrudiment of bad old times when namespace_sem was per-ns).\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "9f5596af44514f99e3a654a4f7cb813354b9e516", "tree": "6a579bf387683b910bd32e8aa7edef9956e58dd1", "parents": [ "e21e7095a78867364d7aa9223d833ccb966f93f3" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Feb 05 00:40:25 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:07:59 2010 -0500" }, "message": "take check for new events in namespace (guts of mounts_poll()) to namespace.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "1f707137b55764740981d022d29c622832a61880", "tree": "af5f72ea7df1afbc1f3b5bb53a3ab3d8ebaae1e0", "parents": [ "462d60577a997aa87c935ae4521bd303733a9f2b" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 30 22:51:25 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:07:57 2010 -0500" }, "message": "new helper: iterate_mounts()\n\napply function to vfsmounts in set returned by collect_mounts(),\nstop if it returns non-zero.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "495d6c9c6595ec7b37910dfd42634839431d21fd", "tree": "375a2ea9803a91c5df34df80d7e08119d9772240", "parents": [ "2ecdc82ef0b03e67ce5ecee79d0d108177a704df" ], "author": { "name": "Valerie Aurora", "email": "vaurora@redhat.com", "time": "Tue Jan 26 14:20:47 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:07:55 2010 -0500" }, "message": "VFS: Clean up shared mount flag propagation\n\nThe handling of mount flags in set_mnt_shared() got a little tangled\nup during previous cleanups, with the following problems:\n\n* MNT_PNODE_MASK is defined as a literal constant when it should be a\nbitwise xor of other MNT_* flags\n* set_mnt_shared() clears and then sets MNT_SHARED (part of MNT_PNODE_MASK)\n* MNT_PNODE_MASK could use a comment in mount.h\n* MNT_PNODE_MASK is a terrible name, change to MNT_SHARED_MASK\n\nThis patch fixes these problems.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "796a6b521d0eadb338adf8cf7e482351c3a8a7b4", "tree": "25858b16136a0a747d24dba45ee39d18fcbef1fa", "parents": [ "c177c2ac8c5aa83ed181db44543c3b38fd1f17a6" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 13:28:47 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 13:00:22 2010 -0500" }, "message": "Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()\n\nFirst of all, get_source() never results in CL_PROPAGATION\nalone. We either get CL_MAKE_SHARED (for the continuation\nof peer group) or CL_SLAVE (slave that is not shared) or both\n(beginning of peer group among slaves). Massage the code to\nmake that explicit, kill CL_PROPAGATION test in clone_mnt()\n(nothing sets CL_MAKE_SHARED without CL_PROPAGATION and in\nclone_mnt() we are checking CL_PROPAGATION after we\u0027d found\nthat there\u0027s no CL_SLAVE, so the check for CL_MAKE_SHARED\nwould do just as well).\n\nFix comments, while we are at it...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "27d55f1f4c190b14092fcca3069c7d15df83514f", "tree": "e0d305a30fa5b5655b87ecc1b50d1664fb4bf70e", "parents": [ "7e1295d9f8300e8c8d1af01765f475621c19ee1d" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 13:07:36 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 13:07:36 2010 -0500" }, "message": "do_add_mount() should sanitize mnt_flags\n\nMNT_WRITE_HOLD shouldn\u0027t leak into new vfsmount and neither\nshould MNT_SHARED (the latter will be set properly, along with\nthe rest of shared-subtree data structures)\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7b43a79f32c0a05e7562043af98e25c05c89b18e", "tree": "920010b3bad9bd2cb7b9f4f2a7305a40400758da", "parents": [ "df1a1ad29739f032f8905310796e558589403d61" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 13:01:26 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 13:01:26 2010 -0500" }, "message": "mnt_flags fixes in do_remount()\n\n* need vfsmount_lock over modifying it\n* need to preserve MNT_SHARED/MNT_UNBINDABLE\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "df1a1ad29739f032f8905310796e558589403d61", "tree": "e8ef57ed776c5dd5615a6fbdb74609c631b7f2a9", "parents": [ "8ad08d8a0c3823e9b06ef84c362c9361be323d2d" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 12:57:40 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 12:57:40 2010 -0500" }, "message": "attach_recursive_mnt() needs to hold vfsmount_lock over set_mnt_shared()\n\nrace in mnt_flags update\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "8ad08d8a0c3823e9b06ef84c362c9361be323d2d", "tree": "14b02283f72d5f1345af0cd8c0f305306f6925a6", "parents": [ "9b6e31021122babe3b3a67b102479f740928b5eb" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 12:56:08 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jan 16 12:56:08 2010 -0500" }, "message": "may_umount() needs namespace_sem\n\notherwise it races with clone_mnt() changing mnt_share/mnt_slaves\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a2770d86b33024f71df269fde2de096df89d6a48", "tree": "d232695efd62bcdcb2b3a9b413bccea66c0ecf32", "parents": [ "b8a7f3cd7e8212e5c572178ff3b5a514861036a5" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Dec 17 12:51:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Dec 17 12:51:05 2009 -0800" }, "message": "Revert \"fix mismerge with Trond\u0027s stuff (create_mnt_ns() export is gone now)\"\n\nThis reverts commit e9496ff46a20a8592fdc7bdaaf41b45eb808d310. Quoth Al:\n\n \"it\u0027s dependent on a lot of other stuff not currently in mainline\n and badly broken with current fs/namespace.c. Sorry, badly\n out-of-order cherry-pick from old queue.\n\n PS: there\u0027s a large pending series reworking the refcounting and\n lifetime rules for vfsmounts that will, among other things, allow to\n rip a subtree away _without_ dissolving connections in it, to be\n garbage-collected when all active references are gone. It\u0027s\n considerably saner wrt \"is the subtree busy\" logics, but it\u0027s nowhere\n near being ready for merge at the moment; this changeset is one of the\n things becoming possible with that sucker, but it certainly shouldn\u0027t\n have been picked during this cycle. My apologies...\"\n\nNoticed-by: Eric Paris \u003ceparis@redhat.com\u003e\nRequested-by: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e9496ff46a20a8592fdc7bdaaf41b45eb808d310", "tree": "6668789814bf4726a82ad282724b72a09e247175", "parents": [ "b0446be4be44768c7c7e919fadda98e1315fad09" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Aug 09 18:44:32 2009 +0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Dec 16 12:16:44 2009 -0500" }, "message": "fix mismerge with Trond\u0027s stuff (create_mnt_ns() export is gone now)\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a27ab9f26b729326778271c1efd895aef4fda1c4", "tree": "7a8ff136c359603d79b45850c5fd1cdbd2f3b92f", "parents": [ "8b8efb44033c7e86b3dc76f825c693ec92ae30e9" ], "author": { "name": "Tetsuo Handa", "email": "penguin-kernel@I-love.SAKURA.ne.jp", "time": "Sun Oct 04 21:49:49 2009 +0900" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Oct 12 10:56:03 2009 +1100" }, "message": "LSM: Pass original mount flags to security_sb_mount().\n\nThis patch allows LSM modules to determine based on original mount flags\npassed to mount(). A LSM module can get masked mount flags (if needed) by\n\n\tflags \u0026\u003d ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE |\n\t\t MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |\n\t\t MS_STRICTATIME);\n\nSigned-off-by: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "eca6f534e61919b28fb21aafbd1c2983deae75be", "tree": "b2c3f110a2defe6360004c39a074f3962ed0cc50", "parents": [ "6d729e44a55547c009d7a87ea66bff21a8e0afea" ], "author": { "name": "Vegard Nossum", "email": "vegard.nossum@gmail.com", "time": "Fri Sep 18 13:05:45 2009 -0700" }, "committer": { "name": "al", "email": "al@dizzy.pdmi.ras.ru", "time": "Thu Sep 24 08:40:15 2009 -0400" }, "message": "fs: fix overflow in sys_mount() for in-kernel calls\n\nsys_mount() reads/copies a whole page for its \"type\" parameter. When\ndo_mount_root() passes a kernel address that points to an object which is\nsmaller than a whole page, copy_mount_options() will happily go past this\nmemory object, possibly dereferencing \"wild\" pointers that could be in any\nstate (hence the kmemcheck warning, which shows that parts of the next\npage are not even allocated).\n\n(The likelihood of something going wrong here is pretty low -- first of\nall this only applies to kernel calls to sys_mount(), which are mostly\nfound in the boot code. Secondly, I guess if the page was not mapped,\nexact_copy_from_user() _would_ in fact handle it correctly because of its\naccess_ok(), etc. checks.)\n\nBut it is much nicer to avoid the dubious reads altogether, by stopping as\nsoon as we find a NUL byte. Is there a good reason why we can\u0027t do\nsomething like this, using the already existing strndup_from_user()?\n\n[akpm@linux-foundation.org: make copy_mount_string() static]\n[AV: fix compat mount breakage, which involves undoing akpm\u0027s change above]\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Vegard Nossum \u003cvegard.nossum@gmail.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: al \u003cal@dizzy.pdmi.ras.ru\u003e\n" }, { "commit": "2d8dd38a5aa0cc2490bbad9b75e77fa154e1d145", "tree": "dcc1ec93e95dde5704a7e37939454c9b24904758", "parents": [ "69130c7cf96ea853dc5be599dd6a4b98907d39cc" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Thu Aug 06 15:07:39 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 07 10:39:56 2009 -0700" }, "message": "vfs: mnt_want_write_file(): fix special file handling\n\nI suspect that mnt_want_write_file() may have wrong assumption. I think\nmnt_want_write_file() is assuming it increments -\u003emnt_writers if\n(file-\u003ef_mode \u0026 FMODE_WRITE). But, if it\u0027s special_file(), it is false?\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nAcked-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\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": "b43f3cbd21ffbd719fd4fa6642bfe6af255ded34", "tree": "f09372f7aa3057a4cca32d5c7fc19032bd7cda5a", "parents": [ "622f8061a68d3f7a576c20a47b7f3bae7c8cfbef" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Jul 08 01:54:37 2009 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 08 09:31:56 2009 -0700" }, "message": "headers: mnt_namespace.h redux\n\nFix various silly problems wrt mnt_namespace.h:\n\n - exit_mnt_ns() isn\u0027t used, remove it\n - done that, sched.h and nsproxy.h inclusions aren\u0027t needed\n - mount.h inclusion was need for vfsmount_lock, but no longer\n - remove mnt_namespace.h inclusion from files which don\u0027t use anything\n from mnt_namespace.h\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f21f62208a6f60e2e05440b2e438d9541822dc4d", "tree": "e373be2998ac4914122f9da76398be980d0dbd47", "parents": [ "c63e09ecccb50f930e899d7005edc5411ee86d4f" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jun 24 03:12:00 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jun 24 08:15:26 2009 -0400" }, "message": "... and the same for vfsmount id/mount group id\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "3b22edc5730b87d360ee7dd7143397ba09b73a47", "tree": "0ee6b90aa3be7878ee73363f167c0a9b47b89f5e", "parents": [ "654f562c526cf9dfb8d453f687341fe0777ee454" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Tue Jun 23 17:29:49 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jun 24 08:15:24 2009 -0400" }, "message": "VFS: Switch init_mount_tree() to use the new create_mnt_ns() helper\n\nEliminates some duplicated code...\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "cf8d2c11cb77f129675478792122f50827e5b0ae", "tree": "85bebdff4cffbca238952e839b0cb801e6a9bfe7", "parents": [ "616511d039af402670de8500d0e24495113a9cab" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Mon Jun 22 15:09:13 2009 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 22 21:28:25 2009 -0700" }, "message": "VFS: Add VFS helper functions for setting up private namespaces\n\nThe purpose of this patch is to improve the remote mount path lookup\nsupport for distributed filesystems such as the NFSv4 client.\n\nWhen given a mount command of the form \"mount server:/foo/bar /mnt\", the\nNFSv4 client is required to look up the filehandle for \"server:/\", and\nthen look up each component of the remote mount path \"foo/bar\" in order\nto find the directory that is actually going to be mounted on /mnt.\nFollowing that remote mount path may involve following symlinks,\ncrossing server-side mount points and even following referrals to\nfilesystem volumes on other servers.\n\nSince the standard VFS path lookup code already supports walking paths\nthat contain all these features (using in-kernel automounts for\nfollowing referrals) we would like to be able to reuse that rather than\nduplicate the full path traversal functionality in the NFSv4 client code.\n\nThis patch therefore defines a VFS helper function create_mnt_ns(), that\nsets up a temporary filesystem namespace and attaches a root filesystem to\nit. It exports the create_mnt_ns() and put_mnt_ns() function for use by\nfilesystem modules.\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "616511d039af402670de8500d0e24495113a9cab", "tree": "825a34ab670dedc463ba7252a177793746c010c7", "parents": [ "31950eb66ff47c946fd9c65c2f8c94b6b7ba13fc" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Mon Jun 22 15:09:13 2009 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 22 21:28:25 2009 -0700" }, "message": "VFS: Uninline the function put_mnt_ns()\n\nIn order to allow modules to use it without having to export vfsmount_lock.\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4aa98cf768b6f2ea4b204620d949a665959214f6", "tree": "dd6f5be97396b9e1f24a9697524da19463e7a8da", "parents": [ "7f78d4cd4c5d01864943c22b79df1b6bde923129" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri May 08 13:36:58 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:08 2009 -0400" }, "message": "Push BKL down into do_remount_sb()\n\n[folded fix from Jiri Slaby]\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7f78d4cd4c5d01864943c22b79df1b6bde923129", "tree": "c232d14121976caa8a38e49d6a8a555e99e27c04", "parents": [ "6fac98dd218653c6aff8a0f56305c424930cea2a" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri May 08 13:34:06 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:08 2009 -0400" }, "message": "Push BKL down beyond VFS-only parts of do_mount()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "6fac98dd218653c6aff8a0f56305c424930cea2a", "tree": "0c5bdca0092e5ec3b201bae958071a7e8385409d", "parents": [ "bbd6851a3213a525128473e978b692ab6ac11aba" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri May 08 13:31:17 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:08 2009 -0400" }, "message": "Push BKL into do_mount()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "f3da392e9ff14b9f388e74319e6d195848991c07", "tree": "d9e7660e5c0b4524aeaafcc5b89a9d68a7ca3817", "parents": [ "8c85e125124a473d6f3e9bb187b0b84207f81d91" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon May 04 03:32:03 2009 +0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:06 2009 -0400" }, "message": "dcache: extrace and use d_unlinked()\n\nd_unlinked() will be used in middle-term to ban checkpointing when opened\nbut unlinked file is detected, and in long term, to detect such situation\nand special case on it.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "96029c4e09ccbd73a6d0ed2b29e80bf2586ad7ef", "tree": "032d2ac7024250c18487a2c7122af68fe56567ff", "parents": [ "d3ef3d7351ccfbef3e5d926efc5ee332136f40d4" ], "author": { "name": "npiggin@suse.de", "email": "npiggin@suse.de", "time": "Sun Apr 26 20:25:55 2009 +1000" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:02 2009 -0400" }, "message": "fs: introduce mnt_clone_write\n\nThis patch speeds up lmbench lat_mmap test by about another 2% after the\nfirst patch.\n\nBefore:\n avg \u003d 462.286\n std \u003d 5.46106\n\nAfter:\n avg \u003d 453.12\n std \u003d 9.58257\n\n(50 runs of each, stddev gives a reasonable confidence)\n\nIt does this by introducing mnt_clone_write, which avoids some heavyweight\noperations of mnt_want_write if called on a vfsmount which we know already\nhas a write count; and mnt_want_write_file, which can call mnt_clone_write\nif the file is open for write.\n\nAfter these two patches, mnt_want_write and mnt_drop_write go from 7% on\nthe profile down to 1.3% (including mnt_clone_write).\n\n[AV: mnt_want_write_file() should take file alone and derive mnt from it;\nnot only all callers have that form, but that\u0027s the only mnt about which\nwe know that it\u0027s already held for write if file is opened for write]\n\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "d3ef3d7351ccfbef3e5d926efc5ee332136f40d4", "tree": "bd875a2b267ae03b350e259675ccb1a04453b9b9", "parents": [ "3174c21b74b56c6a53fddd41a30fd6f757a32bd0" ], "author": { "name": "npiggin@suse.de", "email": "npiggin@suse.de", "time": "Sun Apr 26 20:25:54 2009 +1000" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:02 2009 -0400" }, "message": "fs: mnt_want_write speedup\n\nThis patch speeds up lmbench lat_mmap test by about 8%. lat_mmap is set up\nbasically to mmap a 64MB file on tmpfs, fault in its pages, then unmap it.\nA microbenchmark yes, but it exercises some important paths in the mm.\n\nBefore:\n avg \u003d 501.9\n std \u003d 14.7773\n\nAfter:\n avg \u003d 462.286\n std \u003d 5.46106\n\n(50 runs of each, stddev gives a reasonable confidence, but there is quite\na bit of variation there still)\n\nIt does this by removing the complex per-cpu locking and counter-cache and\nreplaces it with a percpu counter in struct vfsmount. This makes the code\nmuch simpler, and avoids spinlocks (although the msync is still pretty\ncostly, unfortunately). It results in about 900 bytes smaller code too. It\ndoes increase the size of a vfsmount, however.\n\nIt should also give a speedup on large systems if CPUs are frequently operating\non different mounts (because the existing scheme has to operate on an atomic in\nthe struct vfsmount when switching between mounts). But I\u0027m most interested in\nthe single threaded path performance for the moment.\n\n[AV: minor cleanup]\n\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "1c755af4df75996b0dd4b7e6cacaf9d57a6ef2ef", "tree": "0a75e35164912f53b21ca48b829cabdfa6ea507d", "parents": [ "79ed0226198c628133530b179a90dbf42b1c2eba" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Apr 18 14:06:57 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:01 2009 -0400" }, "message": "switch lookup_mnt()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "9393bd07cf218ca51d0e627653f906a9d76a9131", "tree": "402205fe6336028df48cd65b31da0482f0b0bb41", "parents": [ "589ff870ed60a9ebdd5ec99ec3f5afe1282fe151" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Apr 18 13:58:15 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:01 2009 -0400" }, "message": "switch follow_down()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "589ff870ed60a9ebdd5ec99ec3f5afe1282fe151", "tree": "a628f8db3bd587df6e2a918216aa64946b506e6f", "parents": [ "bab77ebf51e3902f608ecf08c9d34a0a52ac35a9" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Apr 18 03:28:19 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:01 2009 -0400" }, "message": "Switch collect_mounts() to struct path\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "dd5cae6e9772ecc62fd374f7a8ec10eb51c96c4d", "tree": "48cfed52f4cc4fc9e2d91b1c8646f438f2f0e110", "parents": [ "5b857119538daac7118c1364d7ff3613f12b84d3" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Apr 07 12:21:18 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:35:59 2009 -0400" }, "message": "Don\u0027t bother with check_mnt() in do_add_mount() on shrinkable ones\n\nThese guys are what we add as submounts; checks for \"is that attached in\nour namespace\" are simply irrelevant for those and counterproductive for\nuse of private vfsmount trees a-la what NFS folks want.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2a32cebd6cbcc43996c3e2d114fa32ba1e71192a", "tree": "0ad94849a7bc3e97cd19978005d1898c8bb44b36", "parents": [ "f9dbd05bc97d1d4f17c2057612f6a8e4dbd039e0" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri May 08 16:05:57 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat May 09 10:51:34 2009 -0400" }, "message": "Fix races around the access to -\u003es_options\n\nPut generic_show_options read access to s_options under rcu_read_lock,\nsplit save_mount_options() into \"we are setting it the first time\"\n(uses in foo_fill_super()) and \"we are relacing and freeing the old one\",\nsynchronize_rcu() before kfree() in the latter.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "67e55205ec55cc7899f1d783f217961596798419", "tree": "45dd7351f9721a46ecb448f0571fb10db3259147", "parents": [ "091bf7624d1c90cec9e578a18529f615213ff847" ], "author": { "name": "Alessio Igor Bogani", "email": "abogani@texware.it", "time": "Fri Apr 24 09:06:53 2009 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat May 09 10:49:38 2009 -0400" }, "message": "vfs: umount_begin BKL pushdown\n\nPush BKL down into -\u003eumount_begin()\n\nSigned-off-by: Alessio Igor Bogani \u003cabogani@texware.it\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "e5d67f0715bc60f6c19abdd86d007d7bb29c9951", "tree": "8de787c36ea21736434e7c4442a41527fc33bdbe", "parents": [ "cf2706a340ae98616d4e2a54900393e0e0b6b72c" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Apr 07 12:15:39 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Apr 20 23:01:15 2009 -0400" }, "message": "Touch all affected namespaces on propagation of mount\n\nWe shouldn\u0027t just touch the namespace of current process\n\nCaught-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "613cbe3d4870429bf2e816d4bbe3146d157ee5c1", "tree": "52031a08d45201164ca6b8a126b3a0c4af2ecb43", "parents": [ "ff54250a0ebab7f90a5f848a0ba63f999830c872" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Sun Apr 19 18:40:43 2009 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 19 10:46:47 2009 -0700" }, "message": "Don\u0027t set relatime when noatime is specified\n\nSince commit 0a1c01c9477602ee8b44548a9405b2c1d587b5a2 (\"Make relatime\ndefault\") when a file system is mounted explicitely with noatime it gets\nboth the MNT_RELATIME and MNT_NOATIME bits set.\n\nThis shows up like this in /proc/mounts:\n\n /dev/xxx /yyy ext3 rw,noatime,relatime,errors\u003dcontinue,data\u003dwriteback 0 0\n\nThat looks strange. The VFS uses noatime in this case, but both flags\nare set. So it\u0027s more a cosmetic issue, but still better to fix.\n\nCc: mjg@redhat.com\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ad4e53bd5406ee214ddc5a41f03f779b8b2d526", "tree": "b3dab5140284b3edf02bf2b13f74bfddb25aa62a", "parents": [ "ce3b0f8d5c2203301fc87f3aaaed73e5819e2a48" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 29 19:50:06 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 31 23:00:27 2009 -0400" }, "message": "Get rid of indirect include of fs_struct.h\n\nDon\u0027t pull it in sched.h; very few files actually need it and those\ncan include directly. sched.h itself only needs forward declaration\nof struct fs_struct;\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "3e93cd671813e204c258f1e6c797959920cf7772", "tree": "a1e0b2d2da7d296cc1c53be9cd6efa5b94b01b5c", "parents": [ "f8ef3ed2bebd2c4cb9ece92efa185d7aead8831a" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 29 19:00:13 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 31 23:00:26 2009 -0400" }, "message": "Take fs_struct handling to new file (fs/fs_struct.c)\n\nPure code move; two new helper functions for nfsd and daemonize\n(unshare_fs_struct() and daemonize_fs_struct() resp.; for now -\nthe same code as used to be in callers). unshare_fs_struct()\nexported (for nfsd, as copy_fs_struct()/exit_fs() used to be),\ncopy_fs_struct() and exit_fs() don\u0027t need exports anymore.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "f8ef3ed2bebd2c4cb9ece92efa185d7aead8831a", "tree": "f6208725f0b2ecd43e393435fa7fb8ad1be1b14b", "parents": [ "11d06b2a1e5658f448a308aa3beb97bacd64a940" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Mar 30 20:36:33 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 31 23:00:25 2009 -0400" }, "message": "Get rid of bumping fs_struct refcount in pivot_root(2)\n\nNot because execve races with _that_ are serious - we really\nneed a situation when final drop of fs_struct refcount is\ndone by something that used to have it as current-\u003efs.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "3ae5080f4c2e293229508dabe7c8a90af4e4c460", "tree": "9cb11f26905a82b7fac9d3b8f9d61d58bc5c94b0", "parents": [ "2c9e15a011c55ff96b2b8d2b126d1b9a96abba20", "aabb8fdb41128705fd1627f56fdd571e45fdbcdb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 27 16:23:12 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 27 16:23:12 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (37 commits)\n fs: avoid I_NEW inodes\n Merge code for single and multiple-instance mounts\n Remove get_init_pts_sb()\n Move common mknod_ptmx() calls into caller\n Parse mount options just once and copy them to super block\n Unroll essentials of do_remount_sb() into devpts\n vfs: simple_set_mnt() should return void\n fs: move bdev code out of buffer.c\n constify dentry_operations: rest\n constify dentry_operations: configfs\n constify dentry_operations: sysfs\n constify dentry_operations: JFS\n constify dentry_operations: OCFS2\n constify dentry_operations: GFS2\n constify dentry_operations: FAT\n constify dentry_operations: FUSE\n constify dentry_operations: procfs\n constify dentry_operations: ecryptfs\n constify dentry_operations: CIFS\n constify dentry_operations: AFS\n ...\n" }, { "commit": "a3ec947c85ec339884b30ef6a08133e9311fdae1", "tree": "c3cc5859a6b6d8986547405b6c5bd11bc8916114", "parents": [ "585d3bc06f4ca57f975a5a1f698f65a45ea66225" ], "author": { "name": "Sukadev Bhattiprolu", "email": "sukadev@linux.vnet.ibm.com", "time": "Wed Mar 04 12:06:34 2009 -0800" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Mar 27 14:44:03 2009 -0400" }, "message": "vfs: simple_set_mnt() should return void\n\nsimple_set_mnt() is defined as returning \u0027int\u0027 but always returns 0.\nCallers assume simple_set_mnt() never fails and don\u0027t properly cleanup if\nit were to _ever_ fail. For instance, get_sb_single() and get_sb_nodev()\nshould:\n\n up_write(sb-\u003es_unmount);\n deactivate_super(sb);\n\nif simple_set_mnt() fails.\n\nSince simple_set_mnt() never fails, would be cleaner if it did not\nreturn anything.\n\n[akpm@linux-foundation.org: fix build]\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "0a1c01c9477602ee8b44548a9405b2c1d587b5a2", "tree": "4f9f77b34bf1f2f497a8f99b8976599a6b2be8cc", "parents": [ "d0adde574b8487ef30f69e2d08bba769e4be513f" ], "author": { "name": "Matthew Garrett", "email": "mjg@redhat.com", "time": "Thu Mar 26 17:53:14 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 26 11:01:10 2009 -0700" }, "message": "Make relatime default\n\nChange the default behaviour of the kernel to use relatime for all\nfilesystems. This can be overridden with the \"strictatime\" mount\noption.\n\nSigned-off-by: Matthew Garrett \u003cmjg@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d0adde574b8487ef30f69e2d08bba769e4be513f", "tree": "fa8b98978bc9ebe607cbdf78c4ed13eeb545ba80", "parents": [ "11ff6f05f1e836a6a02369a4c4b64757e484adc1" ], "author": { "name": "Matthew Garrett", "email": "mjg@redhat.com", "time": "Thu Mar 26 17:49:56 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 26 10:56:35 2009 -0700" }, "message": "Add a strictatime mount option\n\nAdd support for explicitly requesting full atime updates. This makes it\npossible for kernels to default to relatime but still allow userspace to\noverride it.\n\nSigned-off-by: Matthew Garrett \u003cmjg@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1a88b5364b535edaa321d70a566e358390ff0872", "tree": "41c557358a595de85ba8a7a7697901ff21d1de1a", "parents": [ "d2f8d7ee1a9b4650b4e43325b321801264f7c37a" ], "author": { "name": "Al Viro", "email": "viro@ZenIV.linux.org.uk", "time": "Mon Feb 16 02:38:12 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Feb 17 14:02:08 2009 -0800" }, "message": "Fix incomplete __mntput locking\n\nGetting this wrong caused\n\n\tWARNING: at fs/namespace.c:636 mntput_no_expire+0xac/0xf2()\n\ndue to optimistically checking cpu_writer-\u003emnt outside the spinlock.\n\nHere\u0027s what we really want:\n * we know that nobody will set cpu_writer-\u003emnt to mnt from now on\n * all changes to that sucker are done under cpu_writer-\u003elock\n * we want the laziest equivalent of\n\tspin_lock(\u0026cpu_writer-\u003elock);\n\tif (likely(cpu_writer-\u003emnt !\u003d mnt)) {\n\t\tspin_unlock(\u0026cpu_writer-\u003elock);\n\t\tcontinue;\n\t}\n\t/* do stuff */\n that would make sure we won\u0027t miss earlier setting of -\u003emnt done by\n another CPU.\n\nAnyway, for now we just move the spin_lock() earlier and move the test\ninto the properly locked region.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nReported-and-tested-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3480b25743cb7404928d57efeaa3d085708b04c2", "tree": "14d7b42301f2e76cea6772c446f3ee920b29a1b6", "parents": [ "6a6160a7b5c27b3c38651baef92a14fa7072b3c1" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:16 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:24 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 14\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "bdc480e3bef6eb0e7071770834cbdda7e30a5436", "tree": "2bfea8d2b61ccedc3edea4f78e3250eea7f770cc", "parents": [ "a5f8fa9e9ba5ef3305e147f41ad6e1e84ac1f0bd" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:12 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:22 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 10\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "5cc4a0341a1295ea56b2e62eb70d96d8fdb94ded", "tree": "aba5a14fe07d1ebc47991f6d70281b1b937931c4", "parents": [ "dded4f4d5048e64a01cf52eed4d27c8cb2600525" ], "author": { "name": "Julia Lawall", "email": "julia@diku.dk", "time": "Mon Dec 01 14:34:51 2008 -0800" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Dec 31 18:07:38 2008 -0500" }, "message": "fs/namespace.c: drop code after return\n\nThe extra semicolon serves no purpose.\n\nSigned-off-by: Julia Lawall \u003cjulia@diku.dk\u003e\nReviewed-by: Richard Genoud \u003crichard.genoud@gmail.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2b828925652340277a889cbc11b2d0637f7cdaf7", "tree": "32fcb3d3e466fc419fad2d3717956a5b5ad3d35a", "parents": [ "3a3b7ce9336952ea7b9564d976d068a238976c9d", "58e20d8d344b0ee083febb18c2b021d2427e56ca" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 11:29:12 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 11:29:12 2008 +1100" }, "message": "Merge branch \u0027master\u0027 into next\n\nConflicts:\n\tsecurity/keys/internal.h\n\tsecurity/keys/process_keys.c\n\tsecurity/keys/request_key.c\n\nFixed conflicts above by using the non \u0027tsk\u0027 versions.\n\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "da9592edebceeba1b9301beafe80ec8b9c2db0ce", "tree": "00c110cd8ff6d211d76ab4868b6175096a38aad5", "parents": [ "82ab8deda7fef36f067ccdeacc3b3caefc970f89" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:05 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:05 2008 +1100" }, "message": "CRED: Wrap task credential accesses in the filesystem subsystem\n\nWrap access to task credentials so that they can be separated more easily from\nthe task_struct during the introduction of COW creds.\n\nChange most current-\u003e(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().\n\nChange some task-\u003ee?[ug]id to task_e?[ug]id(). In some places it makes more\nsense to use RCU directly rather than a convenient wrapper; these will be\naddressed by later patches.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nReviewed-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "afef80b3d87cae574b8c6b763505f25b74d254ef", "tree": "4aaa479b3bfc635c3cb28530c8cb01c87fc04bde", "parents": [ "8891d6da17db0f9bb507d3a017f130b9970c3087" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Nov 12 13:26:54 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 12 17:17:17 2008 -0800" }, "message": "vfs: fix shrink_submounts\n\nIn the last refactoring of shrink_submounts a variable was not completely\nrenamed. So finish the renaming of mnt to m now.\n\nWithout this if you attempt to mount an nfs mount that has both automatic\nnfs sub mounts on it, and has normal mounts on it. The unmount will\nsucceed when it should not.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0e55a7cca4b66f625d67b292f80b6a976e77c51b", "tree": "5106fdf23fe0a6030ab00645bf37f19f07aadd45", "parents": [ "91efc167d02509ea78abeff6d668065964c67c0b" ], "author": { "name": "Dan Williams", "email": "dan.j.williams@intel.com", "time": "Fri Sep 26 19:01:20 2008 -0700" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Oct 23 05:13:23 2008 -0400" }, "message": "[RFC PATCH] touch_mnt_namespace when the mount flags change\n\nDaemons that need to be launched while the rootfs is read-only can now\npoll /proc/mounts to be notified when their O_RDWR requests may no\nlonger end in EROFS.\n\nCc: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\n" }, { "commit": "0a0d8a46757e2063433c8cd52b7d654e02b4682b", "tree": "a163e6b4450aee50f1b5b3b0cba925adb4e207c6", "parents": [ "2d92ab3c6279f8423b20cf91574d0ad6696d2b44" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Aug 02 00:55:27 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Oct 23 03:34:22 2008 -0400" }, "message": "[PATCH] no need for noinline stuff in fs/namespace.c anymore\n\nStack footprint from hell had been due to many struct nameidata in there.\nNo more.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2d92ab3c6279f8423b20cf91574d0ad6696d2b44", "tree": "eb631d16596a0ac45ed09f33f03091b17786d0b3", "parents": [ "d181146572c4fa9af2a068b967cb53dcac7da944" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Aug 02 00:51:11 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Oct 23 03:34:20 2008 -0400" }, "message": "[PATCH] finally get rid of nameidata in namespace.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "8d66bf5481002b0960aa49aed0987c73f5d7816c", "tree": "7beac720e1df882a1cd4d6d09e6ac25ddd04b399", "parents": [ "d5686b444ff3f72808d2b3fbd58672a86cdf38e7" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Aug 01 09:05:54 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Aug 01 11:25:32 2008 -0400" }, "message": "[PATCH] pass struct path * to do_add_mount()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2d8f30380ab8c706f4e0a8f1aaa22b5886e9ac8a", "tree": "b798097fd831eab39f35c8c2e5a8ccfd7a850ef5", "parents": [ "256984a83880ff7ac78055cb87baea48137f0b77" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jul 22 09:59:21 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jul 26 20:53:34 2008 -0400" }, "message": "[PATCH] sanitize __user_walk_fd() et.al.\n\n* do not pass nameidata; struct path is all the callers want.\n* switch to new helpers:\n\tuser_path_at(dfd, pathname, flags, \u0026path)\n\tuser_path(pathname, \u0026path)\n\tuser_lpath(pathname, \u0026path)\n\tuser_path_dir(pathname, \u0026path) (fail if not a directory)\n The last 3 are trivial macro wrappers for the first one.\n* remove nameidata in callers.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "88b387824fdaecb6ba0f471acf0aadf7d24739fd", "tree": "bd0e169bc0d2a802cd4ea58baf957bfa4602e956", "parents": [ "672b16b2f66c149888bd876a4f92342112205fe1" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Jul 21 18:06:36 2008 +0800" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jul 26 20:53:24 2008 -0400" }, "message": "[PATCH] vfs: use kstrdup() and check failing allocation\n\n- use kstrdup() instead of kmalloc() + memcpy()\n- return NULL if allocating -\u003emnt_devname failed\n- mnt_devname should be const\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Cyrill Gorcunov \u003cgorcunov@gmail.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7f2da1e7d0330395e5e9e350b879b98a1ea495df", "tree": "adc01ced45bb1de10fe58511e7143bbbd138a192", "parents": [ "8bb79224b87aab92071e94d46e70bd160d89bf34" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat May 10 20:44:54 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jul 26 20:53:20 2008 -0400" }, "message": "[PATCH] kill altroot\n\nlong overdue...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "5c752ad9f35910ff1912b3f3ae82878178ddc432", "tree": "4ac627f9cdd7f0e1b0557b9b5c4838587c1c0890", "parents": [ "5cd2b459d326a424671dcd95f038649f7bf7cb96" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Jul 25 19:45:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:07 2008 -0700" }, "message": "Use WARN() in fs/\n\nUse WARN() instead of a printk+WARN_ON() pair; this way the message\nbecomes part of the warning section for better reporting/collection.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2069f457848f846cb31149c9aa29b330a6b66d1b", "tree": "199e7bb15e7d7b5cf008cd6fdb6cefc0d6af7f13", "parents": [ "811f3799279e567aa354c649ce22688d949ac7a9" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Fri Jul 04 09:47:13 2008 +1000" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Jul 14 15:02:05 2008 +1000" }, "message": "LSM/SELinux: show LSM mount options in /proc/mounts\n\nThis patch causes SELinux mount options to show up in /proc/mounts. As\nwith other code in the area seq_put errors are ignored. Other LSM\u0027s\nwill not have their mount options displayed until they fill in their own\nsecurity_sb_show_options() function.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "8e24eea728068bbeb6a3c500b848f883a20bf225", "tree": "93e79da649723e2766237505b22725fec395f139", "parents": [ "530b6412786d7f83592c1a8e2445541ed73fca76" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Wed Apr 30 00:55:09 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:54 2008 -0700" }, "message": "fs: replace remaining __FUNCTION__ occurrences\n\n__FUNCTION__ is gcc-specific, use __func__\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@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": "7ec02ef1596bb3c829a7e8b65ebf13b87faf1819", "tree": "d098192558b74f3b33634499ec6e60f3ee32bb47", "parents": [ "c5c8be3ce59dc59baf20b33dae3f8eb70af7b1f1" ], "author": { "name": "Jan Blunck", "email": "jblunck@suse.de", "time": "Tue Apr 29 00:59:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 08:06:06 2008 -0700" }, "message": "vfs: remove lives_below_in_same_fs()\n\nRemove lives_below_in_same_fs() since is_subdir() from fs/dcache.c is\nproviding the same functionality.\n\nSigned-off-by: Jan Blunck \u003cjblunck@suse.de\u003e\nAcked-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8794b5b246cf6f67baf57bd9db386e79ca5cac33", "tree": "5e986c10f3c62ef9b0e97546493490a584710b06", "parents": [ "338bf9afda91ec005a1e9a0de4af0271cc167d56" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Mon Apr 28 02:14:32 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:33 2008 -0700" }, "message": "quota: remove superfluous DQUOT_OFF() in fs/namespace.c\n\nWe don\u0027t need to turn quotas off before remounting root ro, because\ndo_remount_sb() already handles this.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "42faad99658eed7ca8bd328ffa4bcb7d78c9bcca", "tree": "8b57fb69d1922939c6ba13f512a0ae54a3a171ef", "parents": [ "78d31a3a87f84cf56004b7bc154831f2ee1186e8" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Apr 24 07:21:56 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Apr 25 09:23:25 2008 -0400" }, "message": "[PATCH] restore sane -\u003eumount_begin() API\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "97e7e0f71d6d948c25f11f0a33878d9356d9579e", "tree": "2db3bcf3b4f47995308187eec7f3a61d67446dfa", "parents": [ "2d4d4864ac08caff5c204a752bd004eed4f08760" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Thu Mar 27 13:06:26 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:05:09 2008 -0400" }, "message": "[patch 7/7] vfs: mountinfo: show dominating group id\n\nShow peer group ID of nearest dominating group that has intersection\nwith the mount\u0027s namespace.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2d4d4864ac08caff5c204a752bd004eed4f08760", "tree": "a8907c33afae589146fdcd06eacd740aff48c6a1", "parents": [ "a1a2c409b666befc58c2db9c7fbddf200f153470" ], "author": { "name": "Ram Pai", "email": "linuxram@us.ibm.com", "time": "Thu Mar 27 13:06:25 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:05:03 2008 -0400" }, "message": "[patch 6/7] vfs: mountinfo: add /proc/\u003cpid\u003e/mountinfo\n\n[mszeredi@suse.cz] rewrite and split big patch into managable chunks\n\n/proc/mounts in its current form lacks important information:\n\n - propagation state\n - root of mount for bind mounts\n - the st_dev value used within the filesystem\n - identifier for each mount and it\u0027s parent\n\nIt also suffers from the following problems:\n\n - not easily extendable\n - ambiguity of mountpoints within a chrooted environment\n - doesn\u0027t distinguish between filesystem dependent and independent options\n - doesn\u0027t distinguish between per mount and per super block options\n\nThis patch introduces /proc/\u003cpid\u003e/mountinfo which attempts to address\nall these deficiencies.\n\nCode shared between /proc/\u003cpid\u003e/mounts and /proc/\u003cpid\u003e/mountinfo is\nextracted into separate functions.\n\nThanks to Al Viro for the help in getting the design right.\n\nSigned-off-by: Ram Pai \u003clinuxram@us.ibm.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a1a2c409b666befc58c2db9c7fbddf200f153470", "tree": "3ea8e4c8f1311436939492d70de23dcf185994de", "parents": [ "719f5d7f0b90ac2c8f8ca4232eb322b266fea01e" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Thu Mar 27 13:06:24 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:04:57 2008 -0400" }, "message": "[patch 5/7] vfs: mountinfo: allow using process root\n\nAllow /proc/\u003cpid\u003e/mountinfo to use the root of \u003cpid\u003e to calculate\nmountpoints.\n\n - move definition of \u0027struct proc_mounts\u0027 to \u003clinux/mnt_namespace.h\u003e\n - add the process\u0027s namespace and root to this structure\n - pass a pointer to \u0027struct proc_mounts\u0027 into seq_operations\n\nIn addition the following cleanups are made:\n\n - use a common open function for /proc/\u003cpid\u003e/{mounts,mountstat}\n - surround namespace.c part of these proc files with #ifdef CONFIG_PROC_FS\n - make the seq_operations structures const\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "719f5d7f0b90ac2c8f8ca4232eb322b266fea01e", "tree": "ed3f63e0856b8b319764d475e68b35719ac0ccb9", "parents": [ "73cd49ecdde92fdce131938bdaff4993010d181b" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Thu Mar 27 13:06:23 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:04:51 2008 -0400" }, "message": "[patch 4/7] vfs: mountinfo: add mount peer group ID\n\nAdd a unique ID to each peer group using the IDR infrastructure. The\nidentifiers are reused after the peer group dissolves.\n\nThe IDR structures are protected by holding namepspace_sem for write\nwhile allocating or deallocating IDs.\n\nIDs are allocated when a previously unshared vfsmount becomes the\nfirst member of a peer group. When a new member is added to an\nexisting group, the ID is copied from one of the old members.\n\nIDs are freed when the last member of a peer group is unshared.\n\nSetting the MNT_SHARED flag on members of a subtree is done as a\nseparate step, after all the IDs have been allocated. This way an\nallocation failure can be cleaned up easilty, without affecting the\npropagation state.\n\nBased on design sketch by Al Viro.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "73cd49ecdde92fdce131938bdaff4993010d181b", "tree": "90c9cd3597a915c1f820a3cd1fde1689e9a7ab1f", "parents": [ "9d1bc60138977d9c79471b344a64f2df13b2ccef" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Wed Mar 26 22:11:34 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:04:45 2008 -0400" }, "message": "[patch 3/7] vfs: mountinfo: add mount ID\n\nAdd a unique ID to each vfsmount using the IDR infrastructure. The\nidentifiers are reused after the vfsmount is freed.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "8c3ee42e80ccead805806b3cb50b9855ceb957a2", "tree": "2ab48755381fa7f7170145c1f40aa15e2e409c35", "parents": [ "b5266eb4c8d1a2887a19aaec8144ee4ad1b054c3" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Mar 22 18:00:39 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Apr 21 23:13:47 2008 -0400" }, "message": "[PATCH] get rid of more nameidata passing in namespace.c\n\nFurther reduction of stack footprint (sys_pivot_root());\nlose useless BKL in there, while we are at it.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "b5266eb4c8d1a2887a19aaec8144ee4ad1b054c3", "tree": "37105d0640169ad758d20847cf3effe77381f50f", "parents": [ "1a60a280778ff90270fc7390d9ec102f713a5a29" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Mar 22 17:48:24 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Apr 21 23:13:23 2008 -0400" }, "message": "[PATCH] switch a bunch of LSM hooks from nameidata to path\n\nNamely, ones from namespace.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "1a60a280778ff90270fc7390d9ec102f713a5a29", "tree": "988cb5b1446ecc298aee4771b0768d777165226c", "parents": [ "6d59e7f582ef1c1988542d0fc3b36d0087b757ce" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Mar 22 16:19:49 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Apr 21 23:11:09 2008 -0400" }, "message": "[PATCH] lock exclusively in collect_mounts() and drop_collected_mounts()\n\nTaking namespace_sem shared there isn\u0027t worth the trouble, especially with\nvfsmount ID allocation about to be added. That way we know that umount_tree(),\ncopy_tree() and clone_mnt() are _always_ serialized by namespace_sem.\numount_tree() still needs vfsmount_lock (it manipulates hash chains, among\nother things), but that\u0027s a separate story.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" } ], "next": "2e4b7fcd926006531935a4c79a5e9349fe51125b" }