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2010-06-04Merge branch 'master' into for-linusAlex Elder17-793/+736
2010-06-04ceph: fix lease revocation when seq doesn't matchSage Weil1-4/+8
If the client revokes a lease with a higher seq than what we have, keep the mds's seq, so that it honors our release. Otherwise, we can hang indefinitely. Signed-off-by: Sage Weil <sage@newdream.net>
2010-06-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds1-0/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: fix page refcount leak
2010-06-03pipe: change /proc/sys/fs/pipe-max-pages to byte sized interfaceJens Axboe1-12/+42
This changes the interface to be based on bytes instead. The API matches that of F_SETPIPE_SZ in that it rounds up the passed in size so that the resulting page array is a power-of-2 in size. The proc file is renamed to /proc/sys/fs/pipe-max-size to reflect this change. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-03pipe: change the privilege required for growing a pipe beyond system maxJens Axboe1-1/+1
Change it to CAP_SYS_RESOURCE, as that more accurately models what we want to control. Suggested-by: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-03pipe: adjust minimum pipe size to 1 pageJens Axboe1-7/+1
We don't need to pages to guarantee the POSIX requirement that upto a page size write must be atomic to an empty pipe. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-03jffs2: Fix NFS race by using insert_inode_locked()David Woodhouse2-3/+16
New inodes need to be locked as we're creating them, so they don't get used by other things (like NFSd) before they're ready. Pointed out by Al Viro. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-06-03jffs2: Fix in-core inode leaks on error pathsDavid Woodhouse1-59/+56
Pointed out by Al Viro. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-06-03xfs: improve xfs_isilockedChristoph Hellwig1-16/+10
Use rwsem_is_locked to make the assertations for shared locks work. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2010-06-03xfs: skip writeback from reclaim contextChristoph Hellwig1-0/+15
Allowing writeback from reclaim context causes massive problems with stack overflows as we can call into the writeback code which tends to be a heavy stack user both in the generic code and XFS from random contexts that perform memory allocations. Follow the example of btrfs (and in slightly different form ext4) and refuse to write out data from reclaim context. This issue should really be handled by the VM so that we can tune better for this case, but until we get it sorted out there we have to hack around this in each filesystem with a complex writeback path. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2010-06-03xfs: fix race in inode cluster freeing failing to stale inodesDave Chinner1-80/+62
When an inode cluster is freed, it needs to mark all inodes in memory as XFS_ISTALE before marking the buffer as stale. This is eeded because the inodes have a different life cycle to the buffer, and once the buffer is torn down during transaction completion, we must ensure none of the inodes get written back (which is what XFS_ISTALE does). Unfortunately, xfs_ifree_cluster() has some bugs that lead to inodes not being marked with XFS_ISTALE. This shows up when xfs_iflush() is called on these inodes either during inode reclaim or tail pushing on the AIL. The buffer is read back, but no longer contains inodes and so triggers assert failures and shutdowns. This was reproducable with at run.dbench10 invocation from xfstests. There are two main causes of xfs_ifree_cluster() failing. The first is simple - it checks in-memory inodes it finds in the per-ag icache to see if they are clean without holding the flush lock. if they are clean it skips them completely. However, If an inode is flushed delwri, it will appear clean, but is not guaranteed to be written back until the flush lock has been dropped. Hence we may have raced on the clean check and the inode may actually be dirty. Hence always mark inodes found in memory stale before we check properly if they are clean. The second is more complex, and makes the first problem easier to hit. Basically the in-memory inode scan is done with full knowledge it can be racing with inode flushing and AIl tail pushing, which means that inodes that it can't get the flush lock on might not be attached to the buffer after then in-memory inode scan due to IO completion occurring. This is actually documented in the code as "needs better interlocking". i.e. this is a zero-day bug. Effectively, the in-memory scan must be done while the inode buffer is locked and Io cannot be issued on it while we do the in-memory inode scan. This ensures that inodes we couldn't get the flush lock on are guaranteed to be attached to the cluster buffer, so we can then catch all in-memory inodes and mark them stale. Now that the inode cluster buffer is locked before the in-memory scan is done, there is no need for the two-phase update of the in-memory inodes, so simplify the code into two loops and remove the allocation of the temporary buffer used to hold locked inodes across the phases. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2010-06-02ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only filesTheodore Ts'o1-0/+3
Dan Roseberg has reported a problem with the MOVE_EXT ioctl. If the donor file is an append-only file, we should not allow the operation to proceed, lest we end up overwriting the contents of an append-only file. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Dan Rosenberg <dan.j.rosenberg@gmail.com>
2010-06-01ceph: fix f_namelen reported by statfsSage Weil1-1/+1
We were setting f_namelen in kstatfs to PATH_MAX instead of NAME_MAX. That disagrees with ceph_lookup behavior (which checks against NAME_MAX), and also makes the pjd posix test suite spit out ugly errors because with can't clean up its temporary files. Signed-off-by: Sage Weil <sage@newdream.net>
2010-06-01ceph: fix memory leak in statfsYehuda Sadeh1-0/+2
Freeing the statfs request structure when required. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-06-01ceph: fix d_subdirs ordering problemHenry C Chang1-1/+1
We misused list_move_tail() to order the dentry in d_subdirs. This will screw up the d_subdirs order. This bug can be reliably reproduced by: 1. mount ceph fs. 2. on ceph fs, git clone git://ceph.newdream.net/git/ceph.git 3. Run autogen.sh in ceph directory. (Note: Errors only occur at the first time you run autogen.sh.) Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-06-01nfsd: nfsd_setattr needs to call commit_metadataChristoph Hellwig1-2/+1
The conversion of write_inode_now calls to commit_metadata in commit f501912a35c02eadc55ca9396ece55fe36f785d0 missed out the call in nfsd_setattr. But without this conversion we can't guarantee that a SETATTR request has actually been commited to disk with XFS, which causes a regression from 2.6.32 (only for NFSv2, but anyway). Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: stable@kernel.org Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2010-06-01FS-Cache: Remove unneeded null checksDan Carpenter1-20/+16
fscache_write_op() makes unnecessary checks of the page variable to see if it is NULL. It can't be NULL at those points as the kernel would already have crashed a little higher up where we examined page->index. Furthermore, unless radix_tree_gang_lookup_tag() can return 1 but no page, a NULL pointer crash should not be encountered there as we can only get there if r_t_g_l_t() returned 1. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-06-01cifs: fix page refcount leakJeff Layton1-0/+1
Commit 315e995c63a15cb4d4efdbfd70fe2db191917f7a is causing OOM kills when stress-testing a CIFS filesystem. The VFS readpages operation takes a page reference. The older code just handed this reference off to the page cache, but the new code takes an extra one. The simplest fix is to put the new reference after add_to_page_cache_lru. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-06-01AFS: Fix possible null pointer dereference in afs_alloc_server()Denis Kirjanov1-2/+3
Fix a possible null pointer dereference in afs_alloc_server(): the server pointer is NULL if there was an allocation failure, and under such a condition, we can't dereference it in the _leave() statement. Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-06-01binfmt_elf_fdpic: Fix clear_user() error handlingTakuya Yoshikawa1-15/+11
clear_user() returns the number of bytes that could not be copied rather than an error code. So we should return -EFAULT rather than directly returning the results. Without this patch, positive values may be returned to elf_fdpic_map_file() and the following error handlings do not function as expected. 1. ret = elf_fdpic_map_file_constdisp_on_uclinux(params, file, mm); if (ret < 0) return ret; 2. ret = elf_fdpic_map_file_by_direct_mmap(params, file, mm); if (ret < 0) return ret; Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Mike Frysinger <vapier@gentoo.org> CC: Alexander Viro <viro@zeniv.linux.org.uk> CC: Andrew Morton <akpm@linux-foundation.org> CC: Daisuke HATAYAMA <d.hatayama@jp.fujitsu.com> CC: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-06-01Merge branch 'master' into for-linusJens Axboe275-6190/+11458
Conflicts: fs/pipe.c Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01Revert "writeback: fix WB_SYNC_NONE writeback from umount"Jens Axboe2-38/+12
This reverts commit e913fc825dc685a444cb4c1d0f9d32f372f59861. We are investigating a hang associated with the WB_SYNC_NONE changes, so revert them for now. Conflicts: fs/fs-writeback.c mm/page-writeback.c Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01Revert "writeback: ensure that WB_SYNC_NONE writeback with sb pinned is sync"Jens Axboe1-11/+5
This reverts commit 7c8a3554c683f512dbcee26faedb42e4c05f12fa. We are investigating a hang associated with the WB_SYNC_NONE changes, so revert them for now. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-05-31nilfs2: remove obsolete declarations of cache constructor and destructorRyusuke Konishi3-6/+0
The commit 41c88bd7 ("nilfs2: cleanup multi kmem_cache_{create,destroy} code") consolidated slab constructors and destructors used in nilfs, but it left some declarations in header files. This gets rid of the obsolete declarations. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-05-31nilfs2: fix style issue in nilfs_destroy_cachepRyusuke Konishi1-4/+4
This gets rid of unwanted space chars in front of conditional sentences of nilfs_destroy_cachep(). Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-05-30Merge branch 'for-linus' of ↵Linus Torvalds4-81/+494
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: mm: export generic_pipe_buf_*() to modules fuse: support splice() reading from fuse device fuse: allow splice to move pages mm: export remove_from_page_cache() to modules mm: export lru_cache_add_*() to modules fuse: support splice() writing to fuse device fuse: get page reference for readpages fuse: use get_user_pages_fast() fuse: remove unneeded variable
2010-05-30Merge branch 'for_linus' of ↵Linus Torvalds24-495/+232
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: quota: Convert quota statistics to generic percpu_counter ext3 uses rb_node = NULL; to zero rb_root. quota: Fixup dquot_transfer reiserfs: Fix resuming of quotas on remount read-write pohmelfs: Remove dead quota code ufs: Remove dead quota code udf: Remove dead quota code quota: rename default quotactl methods to dquot_ quota: explicitly set ->dq_op and ->s_qcop quota: drop remount argument to ->quota_on and ->quota_off quota: move unmount handling into the filesystem quota: kill the vfs_dq_off and vfs_dq_quota_on_remount wrappers quota: move remount handling into the filesystem ocfs2: Fix use after free on remount read-only Fix up conflicts in fs/ext4/super.c and fs/ufs/file.c
2010-05-30Merge branch 'for-linus' of ↵Linus Torvalds17-32/+85
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: clean up on forwarded aborted mds request ceph: fix leak of osd authorizer ceph: close out mds, osd connections before stopping auth ceph: make lease code DN specific fs/ceph: Use ERR_CAST ceph: renew auth tickets before they expire ceph: do not resend mon requests on auth ticket renewal ceph: removed duplicated #includes ceph: avoid possible null dereference ceph: make mds requests killable, not interruptible sched: add wait_for_completion_killable_timeout
2010-05-29ceph: clean up on forwarded aborted mds requestSage Weil1-4/+9
If an mds request is aborted (timeout, SIGKILL), it is left registered to keep our state in sync with the mds. If we get a forward notification, though, we know the request didn't succeed and we can unregister it safely. We were trying to resend it, but then bailing out (and not unregistering) in __do_request. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: fix leak of osd authorizerSage Weil1-1/+6
Release the ceph_authorizer when releasing osd state. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: close out mds, osd connections before stopping authSage Weil3-1/+16
The auth module (part of the mon_client) is needed to free any ceph_authorizer(s) used by the mds and osd connections. Flush the msgr workqueue before stopping monc to ensure that the destroy_authorizer auth op is available when those connections are closed out. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: make lease code DN specificSage Weil2-12/+13
The lease code includes a mask in the CEPH_LOCK_* namespace, but that namespace is changing, and only one mask (formerly _DN == 1) is used, so hard code for that value for now. If we ever extend this code to handle leases over different data types we can extend it accordingly. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29fs/ceph: Use ERR_CASTJulia Lawall6-6/+6
Use ERR_CAST(x) rather than ERR_PTR(PTR_ERR(x)). The former makes more clear what is the purpose of the operation, which otherwise looks like a no-op. In the case of fs/ceph/inode.c, ERR_CAST is not needed, because the type of the returned value is the same as the type of the enclosing function. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ type T; T x; identifier f; @@ T f (...) { <+... - ERR_PTR(PTR_ERR(x)) + x ...+> } @@ expression x; @@ - ERR_PTR(PTR_ERR(x)) + ERR_CAST(x) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: renew auth tickets before they expireSage Weil4-1/+27
We were only requesting renewal after our tickets expire; do so before that. Most of the low-level logic for this was already there; just use it. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: do not resend mon requests on auth ticket renewalSage Weil1-1/+4
We only want to send pending mon requests when we successfully authenticate. If we are already authenticated, like when we renew our ticket, there is no need to resend pending requests. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: removed duplicated #includesAndrea Gelmini2-2/+0
fs/ceph/auth.c: linux/slab.h is included more than once. fs/ceph/super.h: linux/slab.h is included more than once. Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: avoid possible null dereferenceSage Weil1-2/+2
ac->ops may be null; use protocol id in error message instead. Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29ceph: make mds requests killable, not interruptibleSage Weil1-2/+2
The underlying problem is that many mds requests can't be restarted. For example, a restarted create() would return -EEXIST if the original request succeeds. However, we do not want a hung MDS to hang the client too. So, use the _killable wait_for_completion variants to abort on SIGKILL but nothing else. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-28Merge branch 'release' of ↵Linus Torvalds1-1/+20
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (27 commits) ACPI: Don't let acpi_pad needlessly mark TSC unstable drivers/acpi/sleep.h: Checkpatch cleanup ACPI: Minor cleanup eliminating redundant PMTIMER_TICKS to NS conversion ACPI: delete unused c-state promotion/demotion data strucutures ACPI: video: fix acpi_backlight=video ACPI: EC: Use kmemdup drivers/acpi: use kasprintf ACPI, APEI, EINJ injection parameters support Add x64 support to debugfs ACPI, APEI, Use ERST for persistent storage of MCE ACPI, APEI, Error Record Serialization Table (ERST) support ACPI, APEI, Generic Hardware Error Source memory error support ACPI, APEI, UEFI Common Platform Error Record (CPER) header Unified UUID/GUID definition ACPI Hardware Error Device (PNP0C33) support ACPI, APEI, PCIE AER, use general HEST table parsing in AER firmware_first setup ACPI, APEI, Document for APEI ACPI, APEI, EINJ support ACPI, APEI, HEST table parsing ACPI, APEI, APEI supporting infrastructure ...
2010-05-28xfs: fix access to upper inodes without inode64Christoph Hellwig5-46/+21
If a filesystem is mounted without the inode64 mount option we should still be able to access inodes not fitting into 32 bits, just not created new ones. For this to work we need to make sure the inode cache radix tree is initialized for all allocation groups, not just those we plan to allocate inodes from. This patch makes sure we initialize the inode cache radix tree for all allocation groups, and also cleans xfs_initialize_perag up a bit to separate the inode32 logical from the general perag structure setup. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: fix might_sleep() warning when initialising per-ag treeDave Chinner1-1/+1
The use of radix_tree_preload() only works if the radix tree was initialised without the __GFP_WAIT flag. The per-ag tree uses GFP_NOFS, so does not trigger allocation of new tree nodes from the preloaded array. Hence it enters the allocator with a spinlock held and triggers the might_sleep() warnings. Reported-by; Chris Mason <chris.mason@oracle.com> Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28fs/xfs/quota: Add missing mutex_unlockJulia Lawall1-1/+3
Add a mutex_unlock missing on the error path. The use of this lock is balanced elsewhere in the file. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E1; @@ * mutex_lock(E1,...); <+... when != E1 if (...) { ... when != E1 * return ...; } ...+> * mutex_unlock(E1,...); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: remove duplicated #includeHuang Weiyi1-1/+0
Remove duplicated #include('s) in fs/xfs/linux-2.6/xfs_quotaops.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Reviewed-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: convert more trace events to DEFINE_EVENTLi Zefan1-168/+188
Use DECLARE_EVENT_CLASS, and save ~15K: text data bss dec hex filename 171949 43028 48 215025 347f1 fs/xfs/linux-2.6/xfs_trace.o.orig 156521 43028 36 199585 30ba1 fs/xfs/linux-2.6/xfs_trace.o No change in functionality. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: xfs_trace.c: remove duplicated #includeHuang Weiyi1-1/+0
Remove duplicated #include('s) in fs/xfs/linux-2.6/xfs_trace.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Reviewed-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: Check new inode size is OK before preallocatingDave Chinner2-4/+14
The new xfsqa test 228 tries to preallocate more space than the filesystem contains. it should fail, but instead triggers an assert about lock flags. The failure is due to the size extension failing in vmtruncate() due to rlimit being set. Check this before we start the preallocation to avoid allocating space that will never be used. Also the path through xfs_vn_allocate already holds the IO lock, so it should not be present in the lock flags when the setattr fails. Hence the assert needs to take this into account. This will prevent other such callers from hitting this incorrect ASSERT. (Fixed a reference to "newsize" to read "new_size". -Alex) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: clean up xlog_alignChristoph Hellwig1-8/+3
Add suggested cleanups to commit 29db3370a1369541d58d692fbfb168b8a0bd7f41 from review that didn't end up being commited. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: cleanup log reservation calculactionsChristoph Hellwig2-457/+400
Instead of having small helper functions calling big macros do the calculations for the log reservations directly in the functions. These are mostly 1:1 from the macros execept that the macros kept the quota calculations in their callers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: be more explicit if RT mount fails due to configEric Sandeen1-1/+10
Recent testers were slightly confused that a realtime mount failed due to missing CONFIG_XFS_RT; we can make that a little more obvious. V2: drop the else as suggested by Christoph Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-05-28xfs: replace E2BIG with EFBIG where appropriateEric Sandeen2-9/+9
Many places in the xfs code return E2BIG when they really mean EFBIG; trying to grow past 16T on a 32 bit machine, for example, says "Argument list too long" rather than "File too large" which is not particularly helpful. Some of these don't make perfect sense as EFBIG either, but still better than E2BIG IMHO. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
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