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* Merge branch 'for-linus' of ↵Linus Torvalds2007-07-09
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: JFS: Update print_hex_dump() syntax JFS: use print_hex_dump() rather than private dump_mem() function JFS: Whitespace cleanup and remove some dead code
| * JFS: Update print_hex_dump() syntaxDave Kleikamp2007-06-13
| | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
| * JFS: use print_hex_dump() rather than private dump_mem() functionDave Kleikamp2007-06-06
| | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
| * JFS: Whitespace cleanup and remove some dead codeDave Kleikamp2007-06-06
| | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
* | sched: scheduler debugging, coreIngo Molnar2007-07-09
| | | | | | | | | | | | | | scheduler debugging core: implement /proc/sched_debug and /proc/<PID>/sched files for scheduler debugging. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | sched: update delay-accounting to use CFS's precise statsBalbir Singh2007-07-09
| | | | | | | | | | | | update delay-accounting to use CFS's precise stats. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | sched: make use of precise accounting for /proc task statsIngo Molnar2007-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | make use of CFS's precise accounting to drive /proc/<pid>/stat statistics. this code was co-authored by: Balbir Singh <balbir@linux.vnet.ibm.com> Dmitry Adamushko <dmitry.adamushko@gmail.com> Ingo Molnar <mingo@elte.hu> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
* | sched: remove the SleepAVG fieldIngo Molnar2007-07-09
| | | | | | | | | | | | | | | | remove the SleepAVG field from /proc/<pid>/status, as with the removal of the sleep-average code this value no longer makes sense. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Fix permission checking for the new utimensat() system callLinus Torvalds2007-07-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 1c710c896eb461895d3c399e15bb5f20b39c9073 added the utimensat() system call, but didn't handle the case of checking for the writability of the target right, when the target was a file descriptor, not a filename. We cannot use vfs_permission(MAY_WRITE) for that case, and need to simply check whether the file descriptor is writable. The oops from using the wrong function was noticed and narrowed down by Markus Trippelsdorf. Cc: Ulrich Drepper <drepper@redhat.com> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | DLM must depend on SYSFSAdrian Bunk2007-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dependency of DLM on SYSFS got lost in commit 6ed7257b46709e87d79ac2b6b819b7e0c9184998 resulting in the following compile error with CONFIG_DLM=y, CONFIG_SYSFS=n: <-- snip --> ... LD .tmp_vmlinux1 fs/built-in.o: In function `dlm_lockspace_init': /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/fs/dlm/lockspace.c:231: undefined reference to `kernel_subsys' fs/built-in.o: In function `configfs_init': /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/fs/configfs/mount.c:143: undefined reference to `kernel_subsys' make[1]: *** [.tmp_vmlinux1] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Fix elf_core_dump() when writing arch specific notes (spu coredumps)Michael Ellerman2007-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | elf_core_dump() supports dumping arch specific ELF notes, via the #define ELF_CORE_WRITE_EXTRA_NOTES. Currently the only user of this is the powerpc spu coredump code. There is a bug in the handling of foffset WRT the arch notes, which causes us to erroneously increment foffset by the size of the arch notes, leaving a block of zeroes in the file, and causing all subsequent data in the file to be at <supposed position> + <arch note size>. eg: LOAD 0x050000 0x00100000 0x00000000 0x20000 0x20000 R E 0x10000 Tells us we should have a chunk of data at 0x50000. The truth is the data is at 0x90dbc = 0x50000 + 0x40dbc (the size of the arch notes). This bug prevents gdb from reading the core file correctly. The simplest fix is to simply remember the size of the arch notes, and add it to foffset after we've written the arch notes. The only drawback is that if the arch code doesn't write as many bytes as it said it would, we end up with a broken core dump again. For now I think that's a reasonable requirement. Tested on a Cell blade, gdb no longer complains about the core file being bogus. While I'm here I should point out that the spu coredump code does not work if we're dumping to a pipe - we'll have to wait for 23 to fix that. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [JFFS2] Fix readinode failure when read_dnode() detects CRC failure.David Woodhouse2007-07-04
| | | | | | | | | | | | | | | | We should have stopped returning 1 from read_dnode() to indicate failure. We can just mark the damn thing obsolete immediately. But I missed a case where we don't. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | dio: remove bogus refcounting BUG_ONZach Brown2007-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Badari Pulavarty reported a case of this BUG_ON is triggering during testing. It's completely bogus and should be removed. It's trying to notice if we left references to the dio hanging around in the sync case. They should have been dropped as IO completed while this path was in dio_await_completion(). This condition will also be checked, via some twisty logic, by the BUG_ON(ret != -EIOCBQUEUED) a few lines lower. So to start this BUG_ON() is redundant. More fatally, it's dereferencing dio-> after having dropped its reference. It's only safe to dereference the dio after releasing the lock if the final reference was just dropped. Another CPU might free the dio in bio completion and reuse the memory after this path drops the dio lock but before the BUG_ON() is evaluated. This patch passed aio+dio regression unit tests and aio-stress on ext3. Signed-off-by: Zach Brown <zach.brown@oracle.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARMDavid Woodhouse2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not all the world is an i386. Many architectures need 64-bit arguments to be aligned in suitable pairs of registers, and the original sys_sync_file_range(int, loff_t, loff_t, int) was therefore wasting an argument register for padding after the first integer. Since we don't normally have more than 6 arguments for system calls, that left no room for the final argument on some architectures. Fix this by introducing sys_sync_file_range2(int, int, loff_t, loff_t) which all fits nicely. In fact, ARM already had that, but called it sys_arm_sync_file_range. Move it to fs/sync.c and rename it, then implement the needed compatibility routine. And stop the missing syscall check from bitching about the absence of sys_sync_file_range() if we've implemented sys_sync_file_range2() instead. Tested on PPC32 and with 32-bit and 64-bit userspace on PPC64. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ext2: fix return of uninitialised variableAndrew Morton2007-06-28
| | | | | | | | | | | | | | | | | | | | gcc correctly says fs/ext2/super.c: In function 'ext2_remount': fs/ext2/super.c:1055: warning: 'err' may be used uninitialized in this function Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | avoid spurious POLLIN returns in signalfdDavide Libenzi2007-06-28
| | | | | | | | | | | | | | | | | | | | | | The new code in kernel/signal.c does not allow fetching private signals from another task. This patch avoid spurious POLLIN returns from a signalfd poll(2) operation. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | zero out last page for llseek/writeMichael Halcrow2007-06-28
| | | | | | | | | | | | | | | | | | | | | | When one llseek's past the end of the file and then writes, every page past the previous end of the file should be cleared. Trevor found that the code, as is, does not assure that the very last page is always cleared. This patch takes care of that. Signed-off-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>
* | eCryptfs: initialize crypt_stat in setattrMichael Halcrow2007-06-28
| | | | | | | | | | | | | | | | | | | | | | Recent changes in eCryptfs have made it possible to get to ecryptfs_setattr() with an uninitialized crypt_stat struct. This results in a wide and colorful variety of unpleasantries. This patch properly initializes the crypt_stat structure in ecryptfs_setattr() when it is necessary to do so. Signed-off-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>
* | eCryptfs: fix write zeros behaviorMichael Halcrow2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the processes involved in wiping regions of the data during truncate and write events, fixing a kernel hang in 2.6.22-rc4 while assuring that zero values are written out to the appropriate locations during events in which the i_size will change. The range passed to ecryptfs_truncate() from ecryptfs_prepare_write() includes the page that is the object of ecryptfs_prepare_write(). This leads to a kernel hang as read_cache_page() is executed on the same page in the ecryptfs_truncate() execution path. This patch remedies this by limiting the range passed to ecryptfs_truncate() so as to exclude the page that is the object of ecryptfs_prepare_write(); it also adds code to ecryptfs_prepare_write() to zero out the region of its own page when writing past the i_size position. This patch also modifies ecryptfs_truncate() so that when a file is truncated to a smaller size, eCryptfs will zero out the contents of the new last page from the new size through to the end of the last page. Signed-off-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>
* | ext4: lost brelse in ext4_read_inode()Kirill Korotaev2007-06-24
| | | | | | | | | | | | | | | | | | | | One of error path in ext4_read_inode() leaks bh since brelse is forgoten. Signed-off-by: Kirill Korotaev <dev@openvz.org> Acked-by: Vasily Averin <vvs@sw.ru> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ext3: lost brelse in ext3_read_inode()Kirill Korotaev2007-06-24
| | | | | | | | | | | | | | | | | | One of error path in ext3_read_inode() leaks bh since brelse is forgoten. Signed-off-by: Kirill Korotaev <dev@openvz.org> Acked-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ext2: disallow setting xip on remountCarsten Otte2007-06-24
| | | | | | | | | | | | | | | | | | | | | | Yan Zheng pointed out that ext2_remount lacks checking if -o xip should be enabled or not. This patch checks for presence of direct_access on the backing block device and if the blocksize meets the requirements. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Cc: Yan Zheng <yanzheng@21cn.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [XFS] s/memclear_highpage_flush/zero_user_page/Christoph Hellwig2007-06-19
| | | | | | | | | | | | | | | | SGI-PV: 957103 SGI-Modid: xfs-linux-melb:xfs-kern:28678a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
* | shm: fix the filename of hugetlb sysv shared memoryEric W. Biederman2007-06-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some user space tools need to identify SYSV shared memory when examining /proc/<pid>/maps. To do so they look for a block device with major zero, a dentry named SYSV<sysv key>, and having the minor of the internal sysv shared memory kernel mount. To help these tools and to make it easier for people just browsing /proc/<pid>/maps this patch modifies hugetlb sysv shared memory to use the SYSV<key> dentry naming convention. User space tools will still have to be aware that hugetlb sysv shared memory lives on a different internal kernel mount and so has a different block device minor number from the rest of sysv shared memory. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Albert Cahalan <acahalan@gmail.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | udf: fix possible leakage of blocksJan Kara2007-06-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have to take care that when we call udf_discard_prealloc() from udf_clear_inode() we have to write inode ourselves afterwards (otherwise, some changes might be lost leading to leakage of blocks, use of free blocks or improperly aligned extents). Also udf_discard_prealloc() does two different things - it removes preallocated blocks and truncates the last extent to exactly match i_size. We move the latter functionality to udf_truncate_tail_extent(), call udf_discard_prealloc() when last reference to a file is dropped and call udf_truncate_tail_extent() when inode is being removed from inode cache (udf_clear_inode() call). We cannot call udf_truncate_tail_extent() earlier as subsequent open+write would find the last block of the file mapped and happily write to the end of it, although the last extent says it's shorter. [akpm@linux-foundation.org: Make checkpatch.pl happier] Signed-off-by: Jan Kara <jack@suse.cz> Cc: Eric Sandeen <sandeen@sandeen.net> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | fuse: ->fs_flags fixletAlexey Dobriyan2007-06-16
| | | | | | | | | | | | | | | | | | | | fs/fuse/inode.c:658:3: error: Initializer entry defined twice fs/fuse/inode.c:661:3: also defined here Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | splice: only check do_wakeup in splice_to_pipe() for a real pipeJens Axboe2007-06-15
| | | | | | | | | | | | | | | | We only ever set do_wakeup to non-zero if the pipe has an inode backing, so it's pointless to check outside the pipe->inode check. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | splice: fix leak of pages on short splice to pipeJens Axboe2007-06-15
| | | | | | | | | | | | | | | | | | | | | | | | | | If the destination pipe is full and we already transferred data, we break out instead of waiting for more pipe room. The exit logic looks at spd->nr_pages to see if we moved everything inside the spd container, but we decrement that variable in the loop to decide when spd has emptied. Instead we want to compare to the original page count in the spd, so cache that in a local variable. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | splice: adjust balance_dirty_pages_ratelimited() callJens Axboe2007-06-15
| | | | | | | | | | | | | | | | | | As we have potentially dirtied more than 1 page, we should indicate as such to the dirty page balancing. So call balance_dirty_pages_ratelimited_nr() and pass in the approximate number of pages we dirtied. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | sysfs: fix race condition around sd->s_dentry, take#2Tejun Heo2007-06-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allowing attribute and symlink dentries to be reclaimed means sd->s_dentry can change dynamically. However, updates to the field are unsynchronized leading to race conditions. This patch adds sysfs_lock and use it to synchronize updates to sd->s_dentry. Due to the locking around ->d_iput, the check in sysfs_drop_dentry() is complex. sysfs_lock only protect sd->s_dentry pointer itself. The validity of the dentry is protected by dcache_lock, so whether dentry is alive or not can only be tested while holding both locks. This is minimal backport of sysfs_drop_dentry() rewrite in devel branch. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | sysfs: fix condition check in sysfs_drop_dentry()Tejun Heo2007-06-12
| | | | | | | | | | | | | | | | | | | | The condition check doesn't make much sense as it basically always succeeds. This causes NULL dereferencing on certain cases. It seems that parentheses are put in the wrong place. Fix it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | sysfs: store sysfs inode nrs in s_ino to avoid readdir oopsesEric Sandeen2007-06-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backport of ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc1/2.6.22-rc1-mm1/broken-out/gregkh-driver-sysfs-allocate-inode-number-using-ida.patch For regular files in sysfs, sysfs_readdir wants to traverse sysfs_dirent->s_dentry->d_inode->i_ino to get to the inode number. But, the dentry can be reclaimed under memory pressure, and there is no synchronization with readdir. This patch follows Tejun's scheme of allocating and storing an inode number in the new s_ino member of a sysfs_dirent, when dirents are created, and retrieving it from there for readdir, so that the pointer chain doesn't have to be traversed. Tejun's upstream patch uses a new-ish "ida" allocator which brings along some extra complexity; this -stable patch has a brain-dead incrementing counter which does not guarantee uniqueness, but because sysfs doesn't hash inodes as iunique expects, uniqueness wasn't guaranteed today anyway. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2007-06-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] CIFS should honour umask [CIFS] Missing flag on negprot needed for some servers to force packet signing [CIFS] whitespace cleanup part 2 [CIFS] whitespace cleanup [CIFS] fix mempool destroy done in wrong order in cifs error path [CIFS] typo in previous patch [CIFS] Fix oops on failed cifs mount (in kthread_stop)
| * | [CIFS] CIFS should honour umaskSteve French2007-06-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes CIFS honour a process' umask like other filesystems. Of course the server is still free to munge the permissions if it wants to; but the client will send the "right" permissions to begin with. A few caveats: 1) It only applies to filesystems that have CAP_UNIX (aka support unix extensions) 2) It applies the correct mode to the follow up CIFSSMBUnixSetPerms() after remote creation When mode to CIFS/NTFS ACL mapping is complete we can do the same thing for that case for servers which do not support the Unix Extensions. Signed-off-by: Matt Keenen <matt@opcode-solutions.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] Missing flag on negprot needed for some servers to force packet signingYehuda Sadeh Weinraub2007-06-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A related signature issue that I came across. There's a bug in win2k that when NT error codes are not negotiated, the server doesn't response that signatures are mandatory. Since there's (currently) no way turn on signatures in such case, I had to force NT error codes, so that this bug will not occur Signed-off-by: Yehuda Sadeh Weinraub <Yehuda.Sadeh@expand.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] whitespace cleanup part 2Steve French2007-06-05
| | | | | | | | | | | | | | | | | | | | | | | | Various coding style problems found by running the new checkpatch.pl script against fs/cifs. 3 more files fixed up. Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] whitespace cleanupSteve French2007-06-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | Various coding style problems found by running fs/cifs against the new checkpatch.pl script. Since there were too many to fit in one patch. Updated the first four files. Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] fix mempool destroy done in wrong order in cifs error pathAkinobu Mita2007-06-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | Slab cache used as memory pool can not be destroyed before the memory pool destruction. Because the memory pool still holds some objects and kmem_cache_destroy() says "Can't free all objects". Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] typo in previous patchSteve French2007-05-23
| | | | | | | | | | | | | | | | | | (also fixed missing space after if) Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] Fix oops on failed cifs mount (in kthread_stop)Steve French2007-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the cifs demultiplex thread wakes up and exits (zeroing server->tsk) before kthread_stop is called, the cifs_mount code could pass a null pointer to kthread_stop Thanks to akpm, Dave Young and Shaggy for suggesting earlier versions of this patch. CC: akpm@linux-foundatior.org Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* | | Merge branch 'splice-2.6.22' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2007-06-11
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'splice-2.6.22' of git://git.kernel.dk/data/git/linux-2.6-block: splice: __generic_file_splice_read: fix read/truncate race splice: __generic_file_splice_read: fix i_size_read() length checks splice: move balance_dirty_pages_ratelimited() outside of splice actor pipe: move pipe_inode_info structure decleration up before it's used splice: remove do_splice_direct() symbol export splice: move inode size check into generic_file_splice_read()
| * | | splice: __generic_file_splice_read: fix read/truncate raceJens Axboe2007-06-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Original patch and description from Neil Brown <neilb@suse.de>, merged and adapted to splice branch by me. Neils text follows: __generic_file_splice_read() currently samples the i_size at the start and doesn't do so again unless it needs to call ->readpage to load a page. After ->readpage it has to re-sample i_size as a truncate may have caused that page to be filled with zeros, and the read() call should not see these. However there are other activities that might cause ->readpage to be called on a page between the time that __generic_file_splice_read() samples i_size and when it finds that it has an uptodate page. These include at least read-ahead and possibly another thread performing a read So we must sample i_size *after* it has an uptodate page. Thus the current sampling at the start and after a read can be replaced with a sampling before page addition into spd. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | splice: __generic_file_splice_read: fix i_size_read() length checksHugh Dickins2007-06-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __generic_file_splice_read's partial page check, at eof after readpage, not only got its calculations wrong, but also reused the loff variable: causing data corruption when splicing from a non-0 offset in the file's last page (revealed by ext2 -b 1024 testing on a loop of a tmpfs file). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | splice: move balance_dirty_pages_ratelimited() outside of splice actorJens Axboe2007-06-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I've seen inode related deadlocks, so move this call outside of the actor itself, which may hold the inode lock. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | splice: remove do_splice_direct() symbol exportJens Axboe2007-06-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It's only supposed to be used by do_sendfile(), which is never modular. So kill the export. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | splice: move inode size check into generic_file_splice_read()Jens Axboe2007-06-08
| | | | | | | | | | | | | | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | | Merge branch 'upstream-linus' of ↵Linus Torvalds2007-06-08
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: ocfs2: Fix invalid assertion during write on 64k pages ocfs2: Fix masklog breakage
| * | | | ocfs2: Fix invalid assertion during write on 64k pagesMark Fasheh2007-06-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The write path code intends to bug if a math error (or unhandled case) results in a write outside of the current cluster boundaries. The actual BUG_ON() statements however are incorrect, leading to a crash on kernels with 64k page size. Fix those by checking against the right variables. Also, move the assertions higher up within the functions so that they trip *before* the code starts to mark buffers. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | | | ocfs2: Fix masklog breakageTiger Yang2007-06-06
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the sysfs changes inadvertantly broke the simple runtime debug log filtering employed in ocfs2. Fix this by properly exporting the masklog category filter names. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* | | | nommu: report correct errno in messageGreg Ungerer2007-06-08
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | Report the correct errno for out of memory debug output in binfmt_flat.c Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: Greg Ungerer <gerg@uclinux.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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