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2008-11-06fat: Add printf attribute to fat_fs_panic()OGAWA Hirofumi
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Fix _fat_bmap() raceOGAWA Hirofumi
fat_get_cluster() assumes the requested blocknr isn't truncated during read. _fat_bmap() doesn't follow this rule. This protects it by ->i_mutex. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Fix ATTR_RO for directoryOGAWA Hirofumi
FAT has the ATTR_RO (read-only) attribute. But on Windows, the ATTR_RO of the directory will be just ignored actually, and is used by only applications as flag. E.g. it's setted for the customized folder by Explorer. http://msdn2.microsoft.com/en-us/library/aa969337.aspx This adds "rodir" option. If user specified it, ATTR_RO is used as read-only flag even if it's the directory. Otherwise, inode->i_mode is not used to hold ATTR_RO (i.e. fat_mode_can_save_ro() returns 0). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Fix ATTR_RO in the case of (~umask & S_WUGO) == 0OGAWA Hirofumi
If inode->i_mode doesn't have S_WUGO, current code assumes it means ATTR_RO. However, if (~[ufd]mask & S_WUGO) == 0, inode->i_mode can't hold S_WUGO. Therefore the updated directory entry will always have ATTR_RO. This adds fat_mode_can_hold_ro() to check it. And if inode->i_mode can't hold, uses -i_attrs to hold ATTR_RO instead. With this, we don't set ATTR_RO unless users change it via ioctl() if (~[ufd]mask & S_WUGO) == 0. And on FAT_IOCTL_GET_ATTRIBUTES path, this adds ->i_mutex to it for not returning the partially updated attributes by FAT_IOCTL_SET_ATTRIBUTES to userland. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Cleanup FAT attribute stuffOGAWA Hirofumi
This adds three helpers: fat_make_attrs() - makes FAT attributes from inode. fat_make_mode() - makes mode_t from FAT attributes. fat_save_attrs() - saves FAT attributes to inode. Then this replaces: MSDOS_MKMODE() by fat_make_mode(), fat_attr() by fat_make_attrs(), ->i_attrs = attr & ATTR_UNUSED by fat_save_attrs(). And for root inode, those is used with ATTR_DIR instead of bogus ATTR_NONE. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Cleanup msdos_lookup()OGAWA Hirofumi
Use same style with vfat_lookup(). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Kill d_invalidate() in vfat_lookup()OGAWA Hirofumi
d_invalidate() for positive dentry doesn't work in some cases (vfsmount, nfsd, and maybe others). shrink_dcache_parent() by d_invalidate() is pointless for vfat usage at all. So, this kills it, and intead of it uses d_move(). To save old behavior, this returns alias simply for directory (don't change pwd, etc..). the directory lookup shouldn't be important for performance. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Fix/Cleanup dcache handling for vfatOGAWA Hirofumi
- Add comments for handling dcache of vfat. - Separate case-sensitive case and case-insensitive to vfat_revalidate() and vfat_ci_revalidate(). vfat_revalidate() doesn't need to drop case-insensitive negative dentry on creation path. - Current code is missing to set ->d_revalidate to the negative dentry created by unlink/etc.. This sets ->d_revalidate always, and returns 1 for positive dentry. Now, we don't need to change ->d_op dynamically anymore, so this just uses sb->s_root->d_op to set ->d_op. - d_find_alias() may return DCACHE_DISCONNECTED dentry. It's not the interesting dentry there. This checks it. - Add missing LOOKUP_PARENT check. We don't need to drop the valid negative dentry for (LOOKUP_CREATE | LOOKUP_PARENT) lookup. - For consistent filename on creation path, this drops negative dentry if we can't see intent. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06vfat: Fix vfat_find() error path in vfat_lookup()OGAWA Hirofumi
Current vfat_lookup() creates negetive dentry blindly if vfat_find() returned a error. It's wrong. If the error isn't -ENOENT, just return error. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: use fat_detach() in fat_clear_inode()OGAWA Hirofumi
Use fat_detach() instead of opencoding it. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Fix fat_ent_update_ptr() for FAT12OGAWA Hirofumi
This fixes the missing update for bhs/nr_bhs in case the caller accessed from block boundary to first block of boundary. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: improve fat_hash()OGAWA Hirofumi
fat_hash() is using the algorithm known as bad. Instead of it, this uses hash_32(). The following is the summary of test. old hash: hash func (1000 times): 33489 cycles total inodes in hash table: 70926 largest bucket contains: 696 smallest bucket contains: 54 new hash: hash func (1000 times): 33129 cycles total inodes in hash table: 70926 largest bucket contains: 315 smallest bucket contains: 236 Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: cleanup fat_parse_long() error handlingDarren Jenkins
Coverity CID 2332 & 2333 RESOURCE_LEAK In fat_search_long() if fat_parse_long() returns a -ve value we return without first freeing unicode. This patch free's them on this error path. The above was false positive on current tree, but this change is more clean, so apply as cleanup. [hirofumi@mail.parknet.co.jp: fix coding style] Signed-off-by: Darren Jenkins <darrenrjenkins@gmail.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: use generic_file_llseek() for directoryOGAWA Hirofumi
Since fat_dir_ioctl() was already fixed (i.e. called under ->i_mutex), and __fat_readdir() doesn't take BKL anymore. So, BKL for ->llseek() is pointless, and we have to use generic_file_llseek(). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: Fix and cleanup timestamp conversionOGAWA Hirofumi
This cleans date_dos2unix()/fat_date_unix2dos() up. New code should be much more readable. And this fixes those old functions. Those doesn't handle 2100 correctly. 2100 isn't leap year, but old one handles it as leap year. Also, with this, centi sec is handled and is fixed. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: split include/msdos_fs.hOGAWA Hirofumi
This splits __KERNEL__ stuff in include/msdos_fs.h into fs/fat/fat.h. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06fat: move fs/vfat/* and fs/msdos/* to fs/fatOGAWA Hirofumi
This just moves those files, but change link order from MSDOS, VFAT to VFAT, MSDOS. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06ext3: wait on all pending commits in ext3_sync_fsArthur Jones
In ext3_sync_fs, we only wait for a commit to finish if we started it, but there may be one already in progress which will not be synced. In the case of a data=ordered umount with pending long symlinks which are delayed due to a long list of other I/O on the backing block device, this causes the buffer associated with the long symlinks to not be moved to the inode dirty list in the second phase of fsync_super. Then, before they can be dirtied again, kjournald exits, seeing the UMOUNT flag and the dirty pages are never written to the backing block device, causing long symlink corruption and exposing new or previously freed block data to userspace. This can be reproduced with a script created by Eric Sandeen <sandeen@redhat.com>: #!/bin/bash umount /mnt/test2 mount /dev/sdb4 /mnt/test2 rm -f /mnt/test2/* dd if=/dev/zero of=/mnt/test2/bigfile bs=1M count=512 touch /mnt/test2/thisisveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongfilename ln -s /mnt/test2/thisisveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongfilename /mnt/test2/link umount /mnt/test2 mount /dev/sdb4 /mnt/test2 ls /mnt/test2/ umount /mnt/test2 To ensure all commits are synced, we flush all journal commits now when sync_fs'ing ext3. Signed-off-by: Arthur Jones <ajones@riverbed.com> Cc: Eric Sandeen <sandeen@redhat.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: <linux-ext4@vger.kernel.org> Cc: <stable@kernel.org> [2.6.everything] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06autofs4: collect version check returnIan Kent
The function check_dev_ioctl_version() returns an error code upon fail but it isn't captured and returned in validate_dev_ioctl() as it should be. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06autofs4: correct offset mount expire checkIan Kent
When checking a directory tree in autofs_tree_busy() we can incorrectly decide that the tree isn't busy. This happens for the case of an active offset mount as autofs4_follow_mount() follows past the active offset mount, which has an open file handle used for expires, causing the file handle not to count toward the busyness check. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: fix renaming one hardlink on top of another [CIFS] fix error in smb_send2 [CIFS] Reduce number of socket retries in large write path
2008-11-03cifs: fix renaming one hardlink on top of anotherJeff Layton
cifs: fix renaming one hardlink on top of another POSIX says that renaming one hardlink on top of another to the same inode is a no-op. We had the logic mostly right, but forgot to clear the return code. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-03Merge branch 'proc-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc * 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: proc: revert /proc/uptime to ->read_proc hook
2008-11-01saner FASYNC handling on file closeAl Viro
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>
2008-10-31Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
* '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
2008-10-31Merge branch 'for_linus' of ↵Linus Torvalds
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
2008-10-30NLM: Set address family before calling nlm_host_rebooted()Chuck Lever
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>
2008-10-30nfsd: fix failure to set eof in readdir in some situationsJ. Bruce Fields
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>
2008-10-30[CIFS] fix error in smb_send2Steve French
smb_send2 exit logic was strange, and with the previous change could cause us to fail large smb writes when all of the smb was not sent as one chunk. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-10-30Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* '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
2008-10-30fs: remove excess kernel-docRandy Dunlap
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>
2008-10-30ecryptfs: fix memory corruption when storing crypto info in xattrsEric Sandeen
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>
2008-10-30fs: remove prepare_write/commit_writeNick Piggin
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>
2008-10-29[CIFS] Reduce number of socket retries in large write pathSteve French
CIFS in some heavy stress conditions cifs could get EAGAIN repeatedly in smb_send2 which led to repeated retries and eventually failure of large writes which could lead to data corruption. There are three changes that were suggested by various network developers: 1) convert cifs from non-blocking to blocking tcp sendmsg (we left in the retry on failure) 2) change cifs to not set sendbuf and rcvbuf size for the socket (let tcp autotune the buffer sizes since that works much better in the TCP stack now) 3) if we have a partial frame sent in smb_send2, mark the tcp session as invalid (close the socket and reconnect) so we do not corrupt the remaining part of the SMB with the beginning of the next SMB. This does not appear to hurt performance measurably and has been run in various scenarios, but it definately removes a corruption that we were seeing in some high stress test cases. Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-10-28NFS: Convert nfs_attr_generation_counter into an atomic_longTrond Myklebust
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>
2008-10-28delay capable() check in ext4_has_free_blocks()Eric Sandeen
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>
2008-10-28merge ext4_claim_free_blocks & ext4_has_free_blocksEric Sandeen
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>
2008-10-28jbd2: Call the commit callback before the transaction could get droppedTheodore Ts'o
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>
2008-10-27ext4: fix a bug accessing freed memory in ext4_abortHidehiro Kawai
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>
2008-10-27ext3: fix a bug accessing freed memory in ext3_abortHidehiro Kawai
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>
2008-10-27proc: revert /proc/uptime to ->read_proc hookAlexey Dobriyan
Turned out some VMware userspace does pread(2) on /proc/uptime, but seqfiles currently don't allow pread() resulting in -ESPIPE. Seqfiles in theory can do pread(), but this can be a long story, so revert to ->read_proc until then. http://bugzilla.kernel.org/show_bug.cgi?id=11856 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-27Switch to a valid email address...Alan Cox
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-26epoll: avoid double-inserts in case of EFAULTDavide Libenzi
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>
2008-10-26select: deal with math overflow from borderline valid userland dataArjan van de Ven
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>
2008-10-25ext4: Fix duplicate entries returned from getdents() system callTheodore Ts'o
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>
2008-10-25ext3: Fix duplicate entries returned from getdents() system callTheodore Ts'o
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>
2008-10-23Merge branch 'proc' of ↵Linus Torvalds
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 ...
2008-10-23ext4: remove unused variable in ext4_get_parentChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> [ All users removed in "switch all filesystems over to d_obtain_alias", aka commit 440037287c5ebb07033ab927ca16bb68c291d309 ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23ext3 quota support: fix compile failureLinus Torvalds
This one was due to a merge error: we added a use of nd.path in commit 2d7c820e56ce83b23daee9eb5343730fb309418e ("ext3: add checks for errors from jbd"), and concurrently we got rid of 'nd' and used a naked 'path' in commit 8264613def2e5c4f12bc3167713090fd172e6055 ("[PATCH] switch quota_on-related stuff to kern_path()"). That all merged cleanly, but it didn't actually _work_. This should fix it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23Merge branch 'v28-range-hrtimers-for-linus-v2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'v28-range-hrtimers-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits) hrtimers: add missing docbook comments to struct hrtimer hrtimers: simplify hrtimer_peek_ahead_timers() hrtimers: fix docbook comments DECLARE_PER_CPU needs linux/percpu.h hrtimers: fix typo rangetimers: fix the bug reported by Ingo for real rangetimer: fix BUG_ON reported by Ingo rangetimer: fix x86 build failure for the !HRTIMERS case select: fix alpha OSF wrapper select: fix alpha OSF wrapper hrtimer: peek at the timer queue just before going idle hrtimer: make the futex() system call use the per process slack value hrtimer: make the nanosleep() syscall use the per process slack hrtimer: fix signed/unsigned bug in slack estimator hrtimer: show the timer ranges in /proc/timer_list hrtimer: incorporate feedback from Peter Zijlstra hrtimer: add a hrtimer_start_range() function hrtimer: another build fix hrtimer: fix build bug found by Ingo hrtimer: make select() and poll() use the hrtimer range feature ...
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