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* [PATCH] VFS: extra check inside dentry_unhash()Vasily Averin2006-12-071-2/+1
| | | | | | | | d_count check after dget() is always true. Signed-off-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] hpfs: fix printk format warningsRandy Dunlap2006-12-075-16/+37
| | | | | | | | | | | | | | | | | | | | | | Fix hpfs printk warnings: fs/hpfs/dir.c:87: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' fs/hpfs/dir.c:147: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long int' fs/hpfs/dir.c:148: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long int' fs/hpfs/dnode.c:537: warning: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int' fs/hpfs/dnode.c:854: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'loff_t' fs/hpfs/ea.c:247: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' fs/hpfs/inode.c:254: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' fs/hpfs/map.c:129: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:135: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:140: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:147: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:154: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] hpfs: bring hpfs_error() into shapeAlexey Dobriyan2006-12-072-15/+11
| | | | | | | | | | | | | | | - switch to error message buffer in .bss - missing va_end() (htf it worked before?) - use vsnprintf() - rename variables to understandable "fmt", "args". - "const char *fmt", yes. - add __attribute__((format ... Still, put that coffee down before reading more. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs/*: trivial vsnprintf() conversionAlexey Dobriyan2006-12-076-11/+11
| | | | | | | | | | It would very lame to get buffer overflow via one of the following. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] compat: fix uaccess handlingHeiko Carstens2006-12-072-29/+39
| | | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] binfmt: fix uaccess handlingHeiko Carstens2006-12-071-4/+7
| | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Function v9fs_get_idpool returns int, not u32 as called twice in ↵Mika Kukkonen2006-12-071-2/+2
| | | | | | | | | | | | | | | | fs/9p/vfs_inode.c Function v9fs_get_idpool returns int, not u32. Actually it returns -1 on errors, and these two callers check if the value is smaller than 0, which was caught by gcc with extra warning flags. Compile tested only but should be OK, as the value computed in v9fs_get_idpool() is also int. Signed-of-by: Mika Kukkonen <mikukkon@iki.fi> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@lanl.gov> Cc: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] handle ext4 directory corruption betterEric Sandeen2006-12-072-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've been using Steve Grubb's purely evil "fsfuzzer" tool, at http://people.redhat.com/sgrubb/files/fsfuzzer-0.4.tar.gz Basically it makes a filesystem, splats some random bits over it, then tries to mount it and do some simple filesystem actions. At best, the filesystem catches the corruption gracefully. At worst, things spin out of control. As you might guess, we found a couple places in ext4 where things spin out of control :) First, we had a corrupted directory that was never checked for consistency... it was corrupt, and pointed to another bad "entry" of length 0. The for() loop looped forever, since the length of ext4_next_entry(de) was 0, and we kept looking at the same pointer over and over and over and over... I modeled this check and subsequent action on what is done for other directory types in ext4_readdir... (adding this check adds some computational expense; I am testing a followup patch to reduce the number of times we check and re-check these directory entries, in all cases. Thanks for the idea, Andreas). Next we had a root directory inode which had a corrupted size, claimed to be > 200M on a 4M filesystem. There was only really 1 block in the directory, but because the size was so large, readdir kept coming back for more, spewing thousands of printk's along the way. Per Andreas' suggestion, if we're in this read error condition and we're trying to read an offset which is greater than i_blocks worth of bytes, stop trying, and break out of the loop. With these two changes fsfuzz test survives quite well on ext4. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] handle ext3 directory corruption betterEric Sandeen2006-12-072-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've been using Steve Grubb's purely evil "fsfuzzer" tool, at http://people.redhat.com/sgrubb/files/fsfuzzer-0.4.tar.gz Basically it makes a filesystem, splats some random bits over it, then tries to mount it and do some simple filesystem actions. At best, the filesystem catches the corruption gracefully. At worst, things spin out of control. As you might guess, we found a couple places in ext3 where things spin out of control :) First, we had a corrupted directory that was never checked for consistency... it was corrupt, and pointed to another bad "entry" of length 0. The for() loop looped forever, since the length of ext3_next_entry(de) was 0, and we kept looking at the same pointer over and over and over and over... I modeled this check and subsequent action on what is done for other directory types in ext3_readdir... (adding this check adds some computational expense; I am testing a followup patch to reduce the number of times we check and re-check these directory entries, in all cases. Thanks for the idea, Andreas). Next we had a root directory inode which had a corrupted size, claimed to be > 200M on a 4M filesystem. There was only really 1 block in the directory, but because the size was so large, readdir kept coming back for more, spewing thousands of printk's along the way. Per Andreas' suggestion, if we're in this read error condition and we're trying to read an offset which is greater than i_blocks worth of bytes, stop trying, and break out of the loop. With these two changes fsfuzz test survives quite well on ext3. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] binfmt_elf: randomize PIE binaries (2nd try)Marcus Meissner2006-12-071-1/+7
| | | | | | | | | | | | | Randomizes -pie compiled binaries from 64k (0x10000) up to ELF_ET_DYN_BASE. 0 -> 64k is excluded to allow NULL ptr accesses to fail. Signed-off-by: Marcus Meissner <meissner@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Remove superfluous lock_super() in extN xattr codeAndreas Gruenbacher2006-12-073-12/+3
| | | | | | | | | | lock_super() is unnecessary for setting super-block feature flags. Use the provided *_SET_COMPAT_FEATURE() macros as well. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix reiserfs bad path release panicSuzuki K P2006-12-071-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of our test team hit a reiserfs_panic while running fsstress tests on 2.6.19-rc1. The message looks like : REISERFS: panic(device Null superblock): reiserfs[5676]: assertion !(p->path_length != 1 ) failed at fs/reiserfs/stree.c:397:reiserfs_check_path: path not properly relsed. The backtrace looked : kernel BUG in reiserfs_panic at fs/reiserfs/prints.c:361! .reiserfs_check_path+0x58/0x74 .reiserfs_get_block+0x1444/0x1508 .__block_prepare_write+0x1c8/0x558 .block_prepare_write+0x34/0x64 .reiserfs_prepare_write+0x118/0x1d0 .generic_file_buffered_write+0x314/0x82c .__generic_file_aio_write_nolock+0x350/0x3e0 .__generic_file_write_nolock+0x78/0xb0 .generic_file_write+0x60/0xf0 .reiserfs_file_write+0x198/0x2038 .vfs_write+0xd0/0x1b4 .sys_write+0x4c/0x8c syscall_exit+0x0/0x4 Upon debugging I found that the restart_transaction was not releasing the path if the th->refcount was > 1. /*static*/ int restart_transaction(struct reiserfs_transaction_handle *th, struct inode *inode, struct path *path) { [...] /* we cannot restart while nested */ if (th->t_refcount > 1) { <<- Path is not released in this case! return 0; } pathrelse(path); <<- Path released here. [...] This could happen in such a situation : In reiserfs/inode.c: reiserfs_get_block() :: if (repeat == NO_DISK_SPACE || repeat == QUOTA_EXCEEDED) { /* restart the transaction to give the journal a chance to free ** some blocks. releases the path, so we have to go back to ** research if we succeed on the second try */ SB_JOURNAL(inode->i_sb)->j_next_async_flush = 1; -->> retval = restart_transaction(th, inode, &path); <<-- We are supposed to release the path, no matter we succeed or fail. But if the th->refcount is > 1, the path is still valid. And, if (retval) goto failure; repeat = _allocate_block(th, block, inode, &allocated_block_nr, NULL, create); If the above allocate_block fails with NO_DISK_SPACE or QUOTA_EXCEEDED, we would have path which is not released. if (repeat != NO_DISK_SPACE && repeat != QUOTA_EXCEEDED) { goto research; } if (repeat == QUOTA_EXCEEDED) retval = -EDQUOT; else retval = -ENOSPC; goto failure; [...] failure: [...] reiserfs_check_path(&path); << Panics here ! Attached here is a patch which could fix the issue. fix reiserfs/inode.c : restart_transaction() to release the path in all cases. The restart_transaction() doesn't release the path when the the journal handle has a refcount > 1. This would trigger a reiserfs_panic() if we encounter an -ENOSPC / -EDQUOT in reiserfs_get_block(). Signed-off-by: Suzuki K P <suzuki@in.ibm.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> Cc: <reiserfs-dev@namesys.com> Cc: Jeff Mahoney <jeffm@suse.com> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] file: kill unnecessary timer in fdtable_deferTejun Heo2006-12-071-27/+2
| | | | | | | | | | | | | | | | | | free_fdtable_rc() schedules timer to reschedule fddef->wq if schedule_work() on it returns 0. However, schedule_work() guarantees that the target work is executed at least once after the scheduling regardless of its return value. 0 return simply means that the work was already pending and thus no further action was required. Another problem is that it used contant '5' as @expires argument to mod_timer(). Kill unnecessary fddef->timer. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Dipankar Sarma <dipankar@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: fix compile without CONFIG_BLOCKMiklos Szeredi2006-12-071-10/+33
| | | | | | | | | | | | | | | | | | Randy Dunlap wote: > Should FUSE depend on BLOCK? Without that and with BLOCK=n, I get: > > inode.c:(.text+0x3acc5): undefined reference to `sb_set_blocksize' > inode.c:(.text+0x3a393): undefined reference to `get_sb_bdev' > fs/built-in.o:(.data+0xd718): undefined reference to `kill_block_super Most fuse filesystems work fine without block device support, so I think a better solution is to disable the 'fuseblk' filesystem type if BLOCK=n. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: add DESTROY operationMiklos Szeredi2006-12-072-0/+28
| | | | | | | | | | | | | Add a DESTROY operation for block device based filesystems. With the help of this operation, such a filesystem can flush dirty data to the device synchronously before the umount returns. This is needed in situations where the filesystem is assumed to be clean immediately after unmount (e.g. ejecting removable media). Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: add bmap supportMiklos Szeredi2006-12-073-0/+42
| | | | | | | | | Add support for the BMAP operation for block device based filesystems. This is needed to support swap-files and lilo. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: add blksize optionMiklos Szeredi2006-12-071-4/+20
| | | | | | | | | | Add 'blksize' option for block device based filesystems. During initialization this is used to set the block size on the device and the super block. The default block size is 512bytes. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: add support for block device based filesystemsMiklos Szeredi2006-12-071-11/+37
| | | | | | | | | | | | | | | | | | I never intended this, but people started using fuse to implement block device based "real" filesystems (ntfs-3g, zfs). The following four patches add better support for these kinds of filesystems. Unlike "normal" fuse filesystems, using this feature should require superuser privileges (enforced by the fusermount utility). Thanks to Szabolcs Szakacsits for the input and testing. This patch adds a 'fuseblk' filesystem type, which is only different from the 'fuse' filesystem type in how the 'dev_name' mount argument is interpreted. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: minor cleanup in fuse_dentry_revalidateMiklos Szeredi2006-12-071-3/+0
| | | | | | | | | Remove unneeded code from fuse_dentry_revalidate(). This made some sense while the validity time could wrap around, but now it's a very obvious no-op. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ext4: fsid for statvfsPekka Enberg2006-12-071-0/+5
| | | | | | | | | | | | | | Update ext4_statfs to return an FSID that is a 64 bit XOR of the 128 bit filesystem UUID as suggested by Andreas Dilger. See the following Bugzilla entry for details: http://bugzilla.kernel.org/show_bug.cgi?id=136 Cc: Andreas Dilger <adilger@clusterfs.com> Cc: Stephen Tweedie <sct@redhat.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ext3: fsid for statvfsPekka Enberg2006-12-071-0/+5
| | | | | | | | | | | | | | Update ext3_statfs to return an FSID that is a 64 bit XOR of the 128 bit filesystem UUID as suggested by Andreas Dilger. See the following Bugzilla entry for details: http://bugzilla.kernel.org/show_bug.cgi?id=136 Cc: Andreas Dilger <adilger@clusterfs.com> Cc: Stephen Tweedie <sct@redhat.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ext2: fsid for statvfsPekka Enberg2006-12-071-6/+12
| | | | | | | | | | | | | | Update ext2_statfs to return an FSID that is a 64 bit XOR of the 128 bit filesystem UUID as suggested by Andreas Dilger. See the following Bugzilla entry for details: http://bugzilla.kernel.org/show_bug.cgi?id=136 Cc: Andreas Dilger <adilger@clusterfs.com> Cc: Stephen Tweedie <sct@redhat.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] honour MNT_NOEXEC for access()Stas Sergeev2006-12-071-2/+4
| | | | | | | | | | | | | | Make access(X_OK) take the "noexec" mount option into account. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Hugh Dickins <hugh@veritas.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix check_partition routinesSuzuki K P2006-12-074-15/+33
| | | | | | | | | | | | | | | | | check_partition() stops its probe once it hits an I/O error from the partition checkers. This would prevent the actual partition checker getting a chance to verify the partition. So this patch lets check_partition() continue probing untill it hits a success while recording the I/O error which might have been reported by the checking routines. Also, it does some cleanup of the partition methods for ibm, atari and amiga to return -1 upon hitting an I/O error. Signed-off-by: Suzuki K P <suzuki@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix rescan_partitions to return errors properlySuzuki Kp2006-12-071-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | The current rescan_partition implementation ignores the errors that comes from the lower layer. It reports success for unknown partitions as well as I/O error cases while reading the partition information. The unknown partition is not (and will not be) considered as an error in the kernel, since there are legal users of it (e.g, members of a RAID5 MD Device or a new disk which is not partitioned at all ). Changing this behaviour would scare the user about a serious problem with their disk and is not recommended. Thus for both "unknown partitions" to the Linux (eg., DEC VMS,Novell Netware) and the legal users of NULL partition, would still be reported as "SUCCESS". The patch attached here, scares the user about something which he does need to worry about. i.e, returning -EIO on disk I/O errors while reading the partition information. Signed-off-by: Suzuki K P <suzuki@in.ibm.com> Cc: Erik Mouw <erik@harddisk-recovery.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Use freezeable workqueues in XFSRafael J. Wysocki2006-12-071-2/+2
| | | | | | | | | | | | Make the workqueues used by XFS freezeable, so their worker threads don't submit any I/O after the suspend image has been created. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@suspend2.net> Cc: David Chinner <dgc@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add include/linux/freezer.h and move definitions from sched.hNigel Cunningham2006-12-0713-4/+13
| | | | | | | | | | | | | Move process freezing functions from include/linux/sched.h to freezer.h, so that modifications to the freezer or the kernel configuration don't require recompiling just about everything. [akpm@osdl.org: fix ueagle driver] Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: remove kmem_cache_tChristoph Lameter2006-12-0780-157/+157
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace all uses of kmem_cache_t with struct kmem_cache. The patch was generated using the following script: #!/bin/sh # # Replace one string by another in all the kernel sources. # set -e for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do quilt add $file sed -e "1,\$s/$1/$2/g" $file >/tmp/$$ mv /tmp/$$ $file quilt refresh done The script was run like this sh replace kmem_cache_t "struct kmem_cache" Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: remove SLAB_KERNELChristoph Lameter2006-12-0749-55/+55
| | | | | | | | SLAB_KERNEL is an alias of GFP_KERNEL. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: remove SLAB_USERChristoph Lameter2006-12-072-3/+3
| | | | | | | | SLAB_USER is an alias of GFP_USER Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: remove SLAB_NOFSChristoph Lameter2006-12-0714-17/+17
| | | | | | | | SLAB_NOFS is an alias of GFP_NOFS. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Allow user processes to raise their oom_adj valueGuillem Jover2006-12-071-2/+4
| | | | | | | | | | | | | | | | | | Currently a user process cannot rise its own oom_adj value (i.e. unprotecting itself from the OOM killer). As this value is stored in the task structure it gets inherited and the unprivileged childs will be unable to rise it. The EPERM will be handled by the generic proc fs layer, as only processes with the proper caps or the owner of the process will be able to write to the file. So we allow only the processes with CAP_SYS_RESOURCE to lower the value, otherwise it will get an EACCES which seems more appropriate than EPERM. Signed-off-by: Guillem Jover <guillem.jover@nokia.com> Acked-by: Andrea Arcangeli <andrea@novell.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] skip data conversion in compat_sys_mount when data_page is NULLAndrey Mirkin2006-12-071-1/+1
| | | | | | | | | | | | | | | | | | | OpenVZ Linux kernel team has found a problem with mounting in compat mode. Simple command "mount -t smbfs ..." on Fedora Core 5 distro in 32-bit mode leads to oops: Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: compat_sys_mount+0xd6/0x290 Process mount (pid: 14656, veid=300, threadinfo ffff810034d30000, task ffff810034c86bc0) Call Trace: ia32_sysret+0x0/0xa The problem is that data_page pointer can be NULL, so we should skip data conversion in this case. Signed-off-by: Andrey Mirkin <amirkin@openvz.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'master' of ↵David Howells2006-12-0546-898/+803
|\ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/ata/libata-scsi.c include/linux/libata.h Futher merge of Linus's head and compilation fixups. Signed-Off-By: David Howells <dhowells@redhat.com>
| * Merge branch 'upstream-linus' of ↵Linus Torvalds2006-12-0428-898/+759
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (31 commits) ocfs2: implement i_op->permission configfs: make configfs_dirent_exists() static ocfs2: update file system paths to set atime ocfs2: core atime update functions ocfs2: Add splice support ocfs2: Remove ocfs2_write_should_remove_suid() [PATCH] Export should_remove_suid() configfs: mutex_lock_nested() fix ocfs2: Remove struct ocfs2_journal_handle in favor of handle_t ocfs2: remove handle argument to ocfs2_start_trans() ocfs2: remove ocfs2_journal_handle journal field ocfs2: pass ocfs2_super * into ocfs2_commit_trans() ocfs2: remove unused handle argument from ocfs2_meta_lock_full() ocfs2: make ocfs2_alloc_handle() static ocfs2: remove unused ocfs2_handle_add_lock() ocfs2: remove unused ocfs2_handle_add_inode() ocfs2: Don't allocate handle early in ocfs2_rename() ocfs2: don't use handle for locking in allocation functions ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_rename() ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_symlink() ...
| | * ocfs2: implement i_op->permissionTiger Yang2006-12-013-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement .permission() in ocfs2_file_iops, ocfs2_special_file_iops and ocfs2_dir_iops. This helps us avoid some multi-node races with mode change and vfs operations. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * configfs: make configfs_dirent_exists() staticAdrian Bunk2006-12-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | This patch makes the needlessly global configfs_dirent_exists() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: update file system paths to set atimeTiger Yang2006-12-014-6/+28
| | | | | | | | | | | | | | | | | | | | | | | | Conditionally update atime in ocfs2_file_aio_read(), ocfs2_readdir() and ocfs2_mmap(). Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: core atime update functionsTiger Yang2006-12-017-1/+116
| | | | | | | | | | | | | | | | | | | | | This patch adds the core routines for updating atime in ocfs2. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: Add splice supportTiger Yang2006-12-011-50/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add splice read/write support in ocfs2. ocfs2_file_splice_read/write are very similar to ocfs2_file_aio_read/write. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: Remove ocfs2_write_should_remove_suid()Mark Fasheh2006-12-011-15/+1
| | | | | | | | | | | | | | | | | | Use should_remove_suid() instead. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * configfs: mutex_lock_nested() fixMark Fasheh2006-12-011-2/+3
| | | | | | | | | | | | | | | | | | | | | configfs_unregister_subsystem() nests a pair of inode i_mutex acquisitions, and thus needs annotation via mutex_lock_nested(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: Remove struct ocfs2_journal_handle in favor of handle_tMark Fasheh2006-12-0120-186/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is mostly a search and replace as ocfs2_journal_handle is now no more than a container for a handle_t pointer. ocfs2_commit_trans() becomes very straight forward, and we remove some out of date comments / code. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: remove handle argument to ocfs2_start_trans()Mark Fasheh2006-12-0111-46/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | All callers either pass in NULL directly, or a local variable that is already set to NULL. The internals of ocfs2_start_trans() get a nice cleanup as a result. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: remove ocfs2_journal_handle journal fieldMark Fasheh2006-12-012-3/+0
| | | | | | | | | | | | | | | | | | It is no longer used. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: pass ocfs2_super * into ocfs2_commit_trans()Mark Fasheh2006-12-0111-29/+31
| | | | | | | | | | | | | | | | | | This sets us up to remove handle->journal. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: remove unused handle argument from ocfs2_meta_lock_full()Mark Fasheh2006-12-0114-51/+41
| | | | | | | | | | | | | | | | | | Now that this is unused and all callers pass NULL, we can safely remove it. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: make ocfs2_alloc_handle() staticMark Fasheh2006-12-012-7/+1
| | | | | | | | | | | | | | | | | | This is no longer used outside of journal.c Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: remove unused ocfs2_handle_add_lock()Mark Fasheh2006-12-014-117/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This gets us rid of a slab we no longer need, as well as removing the majority of what's left on ocfs2_journal_handle. ocfs2_commit_unstarted_handle() has no more real work to do, so remove that function too. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| | * ocfs2: remove unused ocfs2_handle_add_inode()Mark Fasheh2006-12-015-67/+0
| | | | | | | | | | | | | | | | | | | | | | | | We can also delete the unused infrastructure which was once in place to support this functionality. ocfs2_inode_private loses ip_handle and ip_handle_list. ocfs2_journal_handle loses handle_list. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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