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* saner FASYNC handling on file closeAl Viro2008-11-014-7/+4
| | | | | | | | | | | | | | As it is, all instances of ->release() for files that have ->fasync() need to remember to evict file from fasync lists; forgetting that creates a hole and we actually have a bunch that *does* forget. So let's keep our lives simple - let __fput() check FASYNC in file->f_flags and call ->fasync() there if it's been set. And lose that crap in ->release() instances - leaving it there is still valid, but we don't have to bother anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2008-10-313-0/+3
|\ | | | | | | | | | | * 'for-2.6.28' of git://linux-nfs.org/~bfields/linux: NLM: Set address family before calling nlm_host_rebooted() nfsd: fix failure to set eof in readdir in some situations
| * NLM: Set address family before calling nlm_host_rebooted()Chuck Lever2008-10-302-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The nlm_host_rebooted() function uses nlm_cmp_addr() to find an nsm_handle that matches the rebooted peer. In order for this to work, the passed-in address must have a proper address family. This fixes a post-2.6.28 regression introduced by commit 781b61a6, which added AF_INET6 support to nlm_cmp_addr(). Before that commit, nlm_cmp_addr() didn't care about the address family; it compared only the sin_addr.s_addr field for equality. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd: fix failure to set eof in readdir in some situationsJ. Bruce Fields2008-10-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before 14f7dd632011bb89c035722edd6ea0d90ca6b078 "[PATCH] Copy XFS readdir hack into nfsd code", readdir_cd->err was reset to eof before each call to vfs_readdir; afterwards, it is set only once. Similarly, c002a6c7977320f95b5edede5ce4e0eeecf291ff "[PATCH] Optimise NFS readdir hack slightly", can cause us to exit without nfserr_eof set. Fix this. This ensures the "eof" bit is set when needed in readdir replies. (The particular case I saw was an nfsv4 readdir of an empty directory, which returned with no entries (the protocol requires "." and ".." to be filtered out), but with eof unset.) Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | Merge branch 'for_linus' of ↵Linus Torvalds2008-10-315-63/+46
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: delay capable() check in ext4_has_free_blocks() merge ext4_claim_free_blocks & ext4_has_free_blocks jbd2: Call the commit callback before the transaction could get dropped ext4: fix a bug accessing freed memory in ext4_abort ext3: fix a bug accessing freed memory in ext3_abort
| * | delay capable() check in ext4_has_free_blocks()Eric Sandeen2008-10-281-12/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Eric Paris, the capable() check in ext4_has_free_blocks() sometimes causes SELinux denials. We can rearrange the logic so that we only try to use the root-reserved blocks when necessary, and even then we can move the capable() test to last, to avoid the check most of the time. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * | merge ext4_claim_free_blocks & ext4_has_free_blocksEric Sandeen2008-10-282-43/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | Mingming pointed out that ext4_claim_free_blocks & ext4_has_free_blocks are largely cut & pasted; they can be collapsed/merged as follows. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * | jbd2: Call the commit callback before the transaction could get droppedTheodore Ts'o2008-10-281-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The transaction can potentially get dropped if there are no buffers that need to be written. Make sure we call the commit callback before potentially deciding to drop the transaction. Also avoid dereferencing the commit_transaction pointer in the marker for the same reason. This patch fixes the bug reported by Eric Paris at: http://bugzilla.kernel.org/show_bug.cgi?id=11838 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Acked-by: Eric Sandeen <sandeen@redhat.com> Tested-by: Eric Paris <eparis@redhat.com>
| * | ext4: fix a bug accessing freed memory in ext4_abortHidehiro Kawai2008-10-271-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Vegard Nossum reported a bug which accesses freed memory (found via kmemcheck). When journal has been aborted, ext4_put_super() calls ext4_abort() after freeing the journal_t object, and then ext4_abort() accesses it. This patch fix it. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * | ext3: fix a bug accessing freed memory in ext3_abortHidehiro Kawai2008-10-271-3/+7
| |/ | | | | | | | | | | | | | | | | | | | | Vegard Nossum reported a bug which accesses freed memory (found via kmemcheck). When journal has been aborted, ext3_put_super() calls ext3_abort() after freeing the journal_t object, and then ext3_abort() accesses it. This patch fix it. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2008-10-301-8/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | * 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Fix potential race in put_rpccred() SUNRPC: Fix rpcauth_prune_expired NFS: Convert nfs_attr_generation_counter into an atomic_long SUNRPC: Respond promptly to server TCP resets
| * | NFS: Convert nfs_attr_generation_counter into an atomic_longTrond Myklebust2008-10-281-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | The most important property we need from nfs_attr_generation_counter is monotonicity, which is not guaranteed by the current system of smp memory barriers. We should convert it to an atomic_long_t, and drop the memory barriers. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | | fs: remove excess kernel-docRandy Dunlap2008-10-301-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete excess kernel-doc notation in fs/ subdirectory: Warning(linux-2.6.27-git10//fs/jbd/transaction.c:886): Excess function parameter or struct member 'credits' description in 'journal_get_undo_access' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | ecryptfs: fix memory corruption when storing crypto info in xattrsEric Sandeen2008-10-301-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When ecryptfs allocates space to write crypto headers into, before copying it out to file headers or to xattrs, it looks at the value of crypt_stat->num_header_bytes_at_front to determine how much space it needs. This is also used as the file offset to the actual encrypted data, so for xattr-stored crypto info, the value was zero. So, we kzalloc'd 0 bytes, and then ran off to write to that memory. (Which returned as ZERO_SIZE_PTR, so we explode quickly). The right answer is to always allocate a page to write into; the current code won't ever write more than that (this is enforced by the (PAGE_CACHE_SIZE - offset) length in the call to ecryptfs_generate_key_packet_set). To be explicit about this, we now send in a "max" parameter, rather than magically using PAGE_CACHE_SIZE there. Also, since the pointer we pass down the callchain eventually gets the virt_to_page() treatment, we should be using a alloc_page variant, not kzalloc (see also 7fcba054373d5dfc43d26e243a5c9b92069972ee) Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fs: remove prepare_write/commit_writeNick Piggin2008-10-304-6/+5
|/ / | | | | | | | | | | | | | | | | | | | | Nothing uses prepare_write or commit_write. Remove them from the tree completely. [akpm@linux-foundation.org: schedule simple_prepare_write() for unexporting] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* / Switch to a valid email address...Alan Cox2008-10-274-4/+4
|/ | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* epoll: avoid double-inserts in case of EFAULTDavide Libenzi2008-10-261-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | In commit f337b9c58332bdecde965b436e47ea4c94d30da0 ("epoll: drop unnecessary test") Thomas found that there is an unnecessary (always true) test in ep_send_events(). The callback never inserts into ->rdllink while the send loop is performed, and also does the ~EP_PRIVATE_BITS test. Given we're holding the mutex during this time, the conditions tested inside the loop are always true. HOWEVER. The test "!ep_is_linked(&epi->rdllink)" wasn't there because we insert into ->rdllink, but because the send-events loop might terminate before the whole list is scanned (-EFAULT). In such cases, when the loop terminates early, and when a (leftover) file received an event while we're performing the lockless loop, we need such test to avoid to double insert the epoll items. The list_splice() done a few steps below, will correctly re-insert the ones that were left on "txlist". This should fix the kenrel.org bugzilla entry 11831. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* select: deal with math overflow from borderline valid userland dataArjan van de Ven2008-10-262-4/+6
| | | | | | | | | | | | | | | | | | | | Some userland apps seem to pass in a "0" for the seconds, and several seconds worth of usecs to select(). The old kernels accepted this just fine, so the new kernels must too. However, due to the upscaling of the microseconds to nanoseconds we had some cases where we got math overflow, and depending on the GCC version (due to inlining decisions) that actually resulted in an -EINVAL return. This patch fixes this by adding the excess microseconds to the seconds field. Also with thanks to Marcin Slusarz for spotting some implementation bugs in the diagnostics patches. Reported-by: Carlos R. Mafra <crmafra2@gmail.com> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext4: Fix duplicate entries returned from getdents() system callTheodore Ts'o2008-10-251-12/+8
| | | | | | | | | | | | | | | | | | | Fix a regression caused by commit d0156417, "ext4: fix ext4_dx_readdir hash collision handling", where deleting files in a large directory (requiring more than one getdents system call), results in some filenames being returned twice. This was caused by a failure to update info->curr_hash and info->curr_minor_hash, so that if the directory had gotten modified since the last getdents() system call (as would be the case if the user is running "rm -r" or "git clean"), a directory entry would get returned twice to the userspace. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> This patch fixes the bug reported by Markus Trippelsdorf at: http://bugzilla.kernel.org/show_bug.cgi?id=11844 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
* ext3: Fix duplicate entries returned from getdents() system callTheodore Ts'o2008-10-251-12/+8
| | | | | | | | | | | | | | | | | Fix a regression caused by commit 6a897cf4, "ext3: fix ext3_dx_readdir hash collision handling", where deleting files in a large directory (requiring more than one getdents system call), results in some filenames being returned twice. This was caused by a failure to update info->curr_hash and info->curr_minor_hash, so that if the directory had gotten modified since the last getdents() system call (as would be the case if the user is running "rm -r" or "git clean"), a directory entry would get returned twice to the userspace. This patch fixes the bug reported by Markus Trippelsdorf at: http://bugzilla.kernel.org/show_bug.cgi?id=11844 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
* Merge branch 'proc' of ↵Linus Torvalds2008-10-2324-965/+895
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc * 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits) proc: remove fs/proc/proc_misc.c proc: move /proc/vmcore creation to fs/proc/vmcore.c proc: move pagecount stuff to fs/proc/page.c proc: move all /proc/kcore stuff to fs/proc/kcore.c proc: move /proc/schedstat boilerplate to kernel/sched_stats.h proc: move /proc/modules boilerplate to kernel/module.c proc: move /proc/diskstats boilerplate to block/genhd.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c proc: move /proc/vmstat boilerplate to mm/vmstat.c proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c proc: move /proc/buddyinfo boilerplate to mm/vmstat.c proc: move /proc/vmallocinfo to mm/vmalloc.c proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c proc: move /proc/slab_allocators boilerplate to mm/slab.c proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c proc: move /proc/stat to fs/proc/stat.c proc: move rest of /proc/partitions code to block/genhd.c proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c proc: move /proc/devices code to fs/proc/devices.c proc: move rest of /proc/locks to fs/locks.c ...
| * proc: remove fs/proc/proc_misc.cAlexey Dobriyan2008-10-233-67/+2
| | | | | | | | | | | | | | Now that everything was moved to their more or less expected places, apply rm(1). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/vmcore creation to fs/proc/vmcore.cAlexey Dobriyan2008-10-232-6/+3
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move pagecount stuff to fs/proc/page.cAlexey Dobriyan2008-10-233-135/+148
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move all /proc/kcore stuff to fs/proc/kcore.cAlexey Dobriyan2008-10-232-9/+13
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/schedstat boilerplate to kernel/sched_stats.hAlexey Dobriyan2008-10-231-3/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/modules boilerplate to kernel/module.cAlexey Dobriyan2008-10-231-17/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/diskstats boilerplate to block/genhd.cAlexey Dobriyan2008-10-231-16/+0
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Jens Axboe <jens.axboe@oracle.com>
| * proc: move /proc/zoneinfo boilerplate to mm/vmstat.cAlexey Dobriyan2008-10-231-13/+0
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org>
| * proc: move /proc/vmstat boilerplate to mm/vmstat.cAlexey Dobriyan2008-10-231-12/+0
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org>
| * proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.cAlexey Dobriyan2008-10-231-13/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/buddyinfo boilerplate to mm/vmstat.cAlexey Dobriyan2008-10-231-14/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/vmallocinfo to mm/vmalloc.cAlexey Dobriyan2008-10-231-28/+0
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org>
| * proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.cAlexey Dobriyan2008-10-231-17/+0
| | | | | | | | | | | | | | Lose dummy ->write hook in case of SLUB, it's possible now. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
| * proc: move /proc/slab_allocators boilerplate to mm/slab.cAlexey Dobriyan2008-10-231-30/+0
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
| * proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.cAlexey Dobriyan2008-10-233-40/+54
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/stat to fs/proc/stat.cAlexey Dobriyan2008-10-233-134/+154
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move rest of /proc/partitions code to block/genhd.cAlexey Dobriyan2008-10-231-14/+0
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Jens Axboe <jens.axboe@oracle.com>
| * proc: move /proc/cpuinfo code to fs/proc/cpuinfo.cAlexey Dobriyan2008-10-233-14/+25
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/devices code to fs/proc/devices.cAlexey Dobriyan2008-10-233-60/+71
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move rest of /proc/locks to fs/locks.cAlexey Dobriyan2008-10-232-18/+21
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/kmsg creation to fs/proc/kmsg.cAlexey Dobriyan2008-10-233-7/+9
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: remove remnants of ->read_proc in proc_misc.cAlexey Dobriyan2008-10-231-27/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/execdomains to kernel/exec_domain.cAlexey Dobriyan2008-10-231-9/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: switch /proc/cmdline to seq_fileAlexey Dobriyan2008-10-233-10/+30
| | | | | | | | | | | | and move it to fs/proc/cmdline.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/filesystems to fs/filesystems.cAlexey Dobriyan2008-10-232-8/+39
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/stram to m68k-specific codeAlexey Dobriyan2008-10-231-13/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: move /proc/hardware to m68k-specific codeAlexey Dobriyan2008-10-231-13/+0
| | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: switch /proc/version to seq_fileAlexey Dobriyan2008-10-233-13/+35
| | | | | | | | | | | | and move it to fs/proc/version.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
| * proc: switch /proc/meminfo to seq_fileAlexey Dobriyan2008-10-233-137/+169
| | | | | | | | | | | | and move it to fs/proc/meminfo.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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