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2008-03-08Merge commit 'origin' into develTrond Myklebust
2008-03-07Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Fix dentry revalidation for NFSv4 referrals and mountpoint crossings NFS: Fix the fsid revalidation in nfs_update_inode() SUNRPC: Fix a nfs4 over rdma transport oops NFS: Fix an f_mode/f_flags confusion in fs/nfs/write.c
2008-03-07NFS: Fix dentry revalidation for NFSv4 referrals and mountpoint crossingsTrond Myklebust
As long as the directory contents haven't changed, we should just let the path walk proceed to cross the mountpoint. Apart from being an optimisation in the case of 'nohide' mountpoint traversals, it also fixes an issue with referrals: referral inodes don't have valid filehandles, so calling nfs_revalidate_inode() on them is a bug. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-03-07NFS: Fix the fsid revalidation in nfs_update_inode()Trond Myklebust
When we detect that we've crossed a mountpoint on the remote server, we must take care not to use that inode to revalidate the fsid on our current superblock. To do so, we label the inode as a remote mountpoint, and check for that in nfs_update_inode(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-03-07NFS: Fix an f_mode/f_flags confusion in fs/nfs/write.cTrond Myklebust
O_SYNC is stored in filp->f_flags. Thanks to Al Viro for pointing out the bug. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-03-06Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: [XFS] fix inode leak in xfs_iget_core() [XFS] 977545 977545 977545 977545 977545 977545 xfsaild causing too many
2008-03-06[XFS] fix inode leak in xfs_iget_core()David Chinner
If the radix_tree_preload() fails, we need to destroy the inode we just read in before trying again. This could leak xfs_vnode structures when there is memory pressure. Noticed by Christoph Hellwig. SGI-PV: 977823 SGI-Modid: xfs-linux-melb:xfs-kern:30606a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-03-06[XFS] 977545 977545 977545 977545 977545 977545 xfsaild causing too manyDavid Chinner
wakeups Idle state is not being detected properly by the xfsaild push code. The current idle state is detected by an empty list which may never happen with mostly idle filesystem or one using lazy superblock counters. A single dirty item in the list that exists beyond the push target can result repeated looping attempting to push up to the target because it fails to check if the push target has been acheived or not. Fix by considering a dirty list with everything past the target as an idle state and set the timeout appropriately. SGI-PV: 977545 SGI-Modid: xfs-linux-melb:xfs-kern:30532a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-03-06NFS: use new LSM interfaces to explicitly set mount optionsEric Paris
NFS and SELinux worked together previously because SELinux had NFS specific knowledge built in. This design was approved by both groups back in 2004 but the recent NFS changes to use nfs_parsed_mount_data and the usage of nfs_clone_mount_data showed this to be a poor fragile solution. This patch fixes the NFS functionality regression by making use of the new LSM interfaces to allow an FS to explicitly set its own mount options. The explicit setting of mount options is done in the nfs get_sb functions which are called before the generic vfs hooks try to set mount options for filesystems which use text mount data. This does not currently support NFSv4 as that functionality did not exist in previous kernels and thus there is no regression. I will be adding the needed code, which I believe to be the exact same as the v3 code, in nfs4_get_sb for 2.6.26. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: James Morris <jmorris@namei.org>
2008-03-06LSM/SELinux: Interfaces to allow FS to control mount optionsEric Paris
Introduce new LSM interfaces to allow an FS to deal with their own mount options. This includes a new string parsing function exported from the LSM that an FS can use to get a security data blob and a new security data blob. This is particularly useful for an FS which uses binary mount data, like NFS, which does not pass strings into the vfs to be handled by the loaded LSM. Also fix a BUG() in both SELinux and SMACK when dealing with binary mount data. If the binary mount data is less than one page the copy_page() in security_sb_copy_data() can cause an illegal page fault and boom. Remove all NFSisms from the SELinux code since they were broken by past NFS changes. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: James Morris <jmorris@namei.org>
2008-03-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: debugfs: fix sparse warnings Driver core: Fix cleanup when failing device_add(). driver core: Remove dpm_sysfs_remove() from error path of device_add() PM: fix new mutex-locking bug in the PM core PM: Do not acquire device semaphores upfront during suspend kobject: properly initialize ksets sysfs: CONFIG_SYSFS_DEPRECATED fix driver core: fix up Kconfig text for CONFIG_SYSFS_DEPRECATED
2008-03-04ext3: fix mount option parsingJosef Bacik
The "resize" option won't be noticed as it comes after the NULL option, so if you try to mount (or in this case remount) with that option it won't be recognized. Signed-off-by: Josef Bacik <jbacik@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04eCryptfs: make ecryptfs_prepare_write decrypt the pageMichael Halcrow
When the page is not up to date, ecryptfs_prepare_write() should be acting much like ecryptfs_readpage(). This includes the painfully obvious step of actually decrypting the page contents read from the lower encrypted file. Note that this patch resolves a bug in eCryptfs in 2.6.24 that one can produce with these steps: # mount -t ecryptfs /secret /secret # echo "abc" > /secret/file.txt # umount /secret # mount -t ecryptfs /secret /secret # echo "def" >> /secret/file.txt # cat /secret/file.txt Without this patch, the resulting data returned from cat is likely to be something other than "abc\ndef\n". (Thanks to Benedikt Driessen for reporting this.) Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Cc: Benedikt Driessen <bdriessen@escrypt.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04fs/reiserfs/super.c: correct use of ! and &Julia Lawall
In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337 ("wmi: (!x & y) strikes again"), a bug was fixed that involved converting !x & y to !(x & y). The code below shows the same pattern, and thus should perhaps be fixed in the same way. This is not tested and clearly changes the semantics, so it is only something to consider. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E1,E2; @@ ( !E1 & !E2 | - !E1 & E2 + !(E1 & E2) ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Chris Mason <chris.mason@oracle.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04vfs: fix NULL pointer dereference in fsync_buffers_list()Jan Kara
Fix NULL pointer dereference in fsync_buffers_list() introduced by recent fix of races in private_list handling. Since bh->b_assoc_map has been cleared in __remove_assoc_queue() we should really use original value stored in the 'mapping' variable. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04core dump: user_regset writebackRoland McGrath
This makes the user_regset-based core dump code call user_regset writeback hooks when available. This is necessary groundwork to allow IA64 to set CORE_DUMP_USE_REGSET. Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Roland McGrath <roland@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04debugfs: fix sparse warningsHarvey Harrison
extern does not belong in C files, move declaration to linux/debugfs.h fs/debugfs/file.c:42:30: warning: symbol 'debugfs_file_operations' was not declared. Should it be static? fs/debugfs/file.c:54:31: warning: symbol 'debugfs_link_operations' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-03-04Merge branch 'upstream-linus' of ↵Linus Torvalds
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: [PATCH] fs/ocfs2/aops.c: Correct use of ! and & [2.6 patch] ocfs2: make dlm_do_assert_master() static [2.6 patch] make ocfs2_downconvert_thread() static [2.6 patch] fs/ocfs2/: possible cleanups [PATCH] ocfs2: le*_add_cpu conversion ocfs2: Fix writeout in ocfs2_data_convert_worker() ocfs2: Enable localalloc for local mounts
2008-03-04Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back block: fix shadowed variable warning in blk-map.c block: remove extern on function definition cciss: remove READ_AHEAD define and use block layer defaults make cdrom.c:check_for_audio_disc() static block/genhd.c: proper externs unexport blk_rq_map_user_iov unexport blk_{get,put}_queue block/genhd.c: cleanups proper prototype for blk_dev_init() block/blk-tag.c should #include "blk.h" Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory block: separate out padding from alignment block: restore the meaning of rq->data_len to the true data length resubmit: cciss: procfs updates to display info about many splice: only return -EAGAIN if there's hope of more data block: fix kernel-docbook parameters and files
2008-03-04block/genhd.c: proper externsAdrian Bunk
This patch adds proper externs for two structs in include/linux/genhd.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04splice: only return -EAGAIN if there's hope of more dataJens Axboe
sys_tee() currently is a bit eager in returning -EAGAIN, it may do so even if we don't have a chance of anymore data becoming available. So improve the logic and only return -EAGAIN if we have an attached writer to the input pipe. Reported by Johann Felix Soden <johfel@gmx.de> and Patrick McManus <mcmanus@ducksong.com>. Tested-by: Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Steve French
2008-03-03[PATCH] fs/ocfs2/aops.c: Correct use of ! and &Julia Lawall
In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337, a bug was fixed that involved converting !x & y to !(x & y). The code below shows the same pattern, and thus should perhaps be fixed in the same way. This is not tested and clearly changes the semantics, so it is only something to consider. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03[2.6 patch] ocfs2: make dlm_do_assert_master() staticAdrian Bunk
This patch makes the needlessly global dlm_do_assert_master() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03[2.6 patch] make ocfs2_downconvert_thread() staticAdrian Bunk
This patch makes the needlessly global ocfs2_downconvert_thread() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03[2.6 patch] fs/ocfs2/: possible cleanupsAdrian Bunk
This patch contains the following cleanups that are now possible: - make the following needlessly global functions static: - dlmglue.c:ocfs2_process_blocked_lock() - heartbeat.c:ocfs2_node_map_init() - #if 0 the following unused global function plus support functions: - heartbeat.c:ocfs2_node_map_is_only() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03[PATCH] ocfs2: le*_add_cpu conversionMarcin Slusarz
replace all: little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) + expression_in_cpu_byteorder); with: leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder); generated with semantic patch Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03ocfs2: Fix writeout in ocfs2_data_convert_worker()Mark Fasheh
Commit f1f540688eae66c274ff1c1133b5d9c687b28f58 "optimized" ocfs2_data_convert_worker() to "only do work for regular files". Unfortunately, I left out a '!', which casued it to *skip* regular files. This was hidden from testing until recently because the default data journaling mode (data=ordered) doesn't exercise this code. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2008-03-03ocfs2: Enable localalloc for local mountsSunil Mushran
Commit 2fbe8d1ebe004425b4f7b8bba345623d2280be82 disabled localalloc for local mounts. This caused issues as ocfs2 uses localalloc to provide write locality. This patch enables localalloc for local mounts. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03docbook: fix filesystems.tmpl source filesRandy Dunlap
Fix docbook problems in filesystems.tmpl. These cause the generated docbook to be incorrect. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03Allow ARG_MAX execve string space even with a small stack limitLinus Torvalds
The new code that removed the limitation on the execve string size (which was historically 32 pages) replaced it with a much softer limit based on RLIMIT_STACK which is usually much larger than the traditional limit. See commit b6a2fea39318e43fee84fa7b0b90d68bed92d2ba ("mm: variable length argument support") for details. However, if you have a small stack limit (perhaps because you need lots of stacks in a threaded environment), the new heuristic of allowing up to 1/4th of RLIMIT_STACK to be used for argument and environment strings could actually be smaller than the old limit. So just say that it's ok to have up to ARG_MAX strings regardless of the value of RLIMIT_STACK, and check the rlimit only when going over that traditional limit. (Of course, if you actually have a *really* small stack limit, the whole stack itself will be limited before you hit ARG_MAX, but that has always been true and is clearly the right behaviour anyway). Acked-by: Carlos O'Donell <carlos@codesourcery.com> Cc: Michael Kerrisk <michael.kerrisk@googlemail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ollie Wild <aaw@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-01Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Steve French
2008-02-28Merge branch 'cleanups' into nextTrond Myklebust
2008-02-28SUNRPC: Remove now-redundant RCU-safe rpc_task free pathTrond Myklebust
Now that we've tightened up the locking rules for RPC queue wakeups, we can remove the RCU-safe kfree calls... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-28SUNRPC: Add a (empty for the moment) destructor for rpc_wait_queuesTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-28[XFS] If you mount an XFS filesystem with no mount options at all, thenJosef Jeff Sipek
the "ikeep" option is set rather than "noikeep". This regression was introduced in 970451. With no mount options specified, xfs_parseargs() does the following: int ikeep = 0; args->flags |= XFSMNT_BARRIER; args->flags2 |= XFSMNT2_COMPAT_IOSIZE; if (!options) goto done; It only sets the above two options by default and before, it also used to set XFSMNT_IDELETE by default. If options are specified, then if (!(args->flags & XFSMNT_DMAPI) && !ikeep) args->flags |= XFSMNT_IDELETE; is executed later on which is skipped by the "goto done;" above. The solution is to invert the logic. SGI-PV: 977771 SGI-Modid: xfs-linux-melb:xfs-kern:30590a Signed-off-by: Niv Sardi <xaiki@sgi.com> Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-26Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: [XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac [XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac Remove empty file fs/xfs/Makefile-linux-2.6.
2008-02-26Merge 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: ext4: add missing ext4_journal_stop() ext4: ext4_find_next_zero_bit needs an aligned address on some arch ext4: set EXT4_EXTENTS_FL only for directory and regular files ext4: Don't mark filesystem error if fallocate fails ext4: Fix BUG when writing to an unitialized extent ext4: Don't use ext4_dec_count() if not needed ext4: modify block allocation algorithm for the last group ext4: Don't claim block from group which has corrupt bitmap ext4: Get journal write access before modifying the extent tree ext4: Fix memory and buffer head leak in callers to ext4_ext_find_extent() ext4: Don't leave behind a half-created inode if ext4_mkdir() fails ext4: Fix kernel BUG at fs/ext4/mballoc.c:910! ext4: Fix locking hierarchy violation in ext4_fallocate() Remove incorrect BKL comments in ext4
2008-02-26[XFS] Undo bit ops cleanup mod due to regression on 32-bit powermacLachlan McIlroy
platform. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30559a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-26[XFS] Undo bit ops cleanup mod due to regression on 32-bit powermacLachlan McIlroy
platform. SGI-PV: 974005 SGI-Modid: xfs-linux-melb:xfs-kern:30558a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-25SUNRPC: Run rpc timeout functions as callbacks instead of in softirqsTrond Myklebust
An audit of the current RPC timeout functions shows that they don't really ever need to run in the softirq context. As long as the softirq is able to signal that the wakeup is due to a timeout (which it can do by setting task->tk_status to -ETIMEDOUT) then the callback functions can just run as standard task->tk_callback functions (in the rpciod/process context). The only possible border-line case would be xprt_timer() for the case of UDP, when the callback is used to reduce the size of the transport congestion window. In testing, however, the effect of moving that update to a callback would appear to be minor. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25SUNRPC: Convert users of rpc_wake_up_task to use rpc_wake_up_queued_taskTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25NFS: Ensure that the asynchronous RPC calls complete on nfsiod.Trond Myklebust
We want to ensure that rpc_call_ops that involve mntput() are run on nfsiod rather than on rpciod, so that they don't deadlock when the resulting umount calls rpc_shutdown_client(). Hence we specify that read, write and commit calls must complete on nfsiod. Ditto for NFSv4 open, lock, locku and close asynchronous calls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25NFS: Add an nfsiod workqueueTrond Myklebust
NFS post-rpciod cleanups often involve tasks that cannot be safely performed within the rpciod context (due to deadlock concerns). We therefore add a dedicated NFS workqueue that can perform tasks like cleaning up state after an interrupted NFSv4 open() call, or calling put_nfs_open_context() after an asynchronous read or write call. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25NFS: Fix a deadlock with lazy umountTrond Myklebust
We can't allow rpc callback functions like task->tk_ops->rpc_call_prepare() and task->tk_ops->rpc_call_done() to call mntput() in any way, since that will cause a deadlock when the call to rpc_shutdown_client() attempts to wait on 'task' to complete. We can avoid the above deadlock by moving calls to mntput to task->tk_ops->rpc_release() callback, since at that time the task will be marked as completed, and so rpc_shutdown_client won't attempt to wait on it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-26[CIFS] remove unused variableSteve French
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-02-25NFS: Fix an f_mode/f_flags confusion in fs/nfs/write.cTrond Myklebust
O_SYNC is stored in filp->f_flags. Thanks to Al Viro for pointing out the bug. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25ext4: add missing ext4_journal_stop()Akinobu Mita
Add missing ext4_journal_stop() in error handling. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Stephen Tweedie <sct@redhat.com> Cc: adilger@clusterfs.com Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mingming Cao <cmm@us.ibm.com>
2008-02-25[CIFS] consolidate duplicate code in posix/unix inode handlingChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-02-25latencytop: change /proc task_struct access methodHiroshi Shimamoto
Change getting task_struct by get_proc_task() at read or write time, and returns -ESRCH if get_proc_task() returns NULL. This is same behavior as other /proc files. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>