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btrfs_iget() returns an ERR_PTR() on failure and not null.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Unwind and return -ENOMEM if the allocation fails here.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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If btrfs_lookup_dir_item() fails, we should can just let the mount fail
with an error.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Tree blocks can live in data block groups in FS converted from extN.
So it's easy to trigger the BUG_ON.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Fix a potential null dereference in relocation.c
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Acked-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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when we use remap_file_pages() to remap a file, remap_file_pages always return
error. It is because btrfs didn't set VM_CAN_NONLINEAR for vma.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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refs can be used with uninitialized data if btrfs_lookup_extent_info()
fails on the first pass through the loop. In the original code if that
happens then check_path_shared() probably returns 1, this patch
changes it to return 1 for safety.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Seems that when btrfs_fallocate was converted to use the new ENOSPC stuff we
dropped passing the mode to the function that actually does the preallocation.
This breaks anybody who wants to use FALLOC_FL_KEEP_SIZE. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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We cannot use the loop device which has been connected to a file in the btrf
The reproduce steps is following:
# dd if=/dev/zero of=vdev0 bs=1M count=1024
# losetup /dev/loop0 vdev0
# mkfs.btrfs /dev/loop0
...
failed to zero device start -5
The reason is that the btrfs don't implement either ->write_begin or ->write
the VFS API, so we fix it by setting ->write to do_sync_write().
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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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: try to send partial cap release on cap message on missing inode
ceph: release cap on import if we don't have the inode
ceph: fix misleading/incorrect debug message
ceph: fix atomic64_t initialization on ia64
ceph: fix lease revocation when seq doesn't match
ceph: fix f_namelen reported by statfs
ceph: fix memory leak in statfs
ceph: fix d_subdirs ordering problem
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If we have enough memory to allocate a new cap release message, do so, so
that we can send a partial release message immediately. This keeps us from
making the MDS wait when the cap release it needs is in a partially full
release message.
If we fail because of ENOMEM, oh well, they'll just have to wait a bit
longer.
Signed-off-by: Sage Weil <sage@newdream.net>
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If we get an IMPORT that give us a cap, but we don't have the inode, queue
a release (and try to send it immediately) so that the MDS doesn't get
stuck waiting for us.
Signed-off-by: Sage Weil <sage@newdream.net>
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Nothing is released here: the caps message is simply ignored in this case.
Signed-off-by: Sage Weil <sage@newdream.net>
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bdi_seq is an atomic_long_t but we're using ATOMIC_INIT, which causes
build failures on ia64. This patch fixes it to use ATOMIC_LONG_INIT.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Sage Weil <sage@newdream.net>
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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>
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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>
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Freeing the statfs request structure when required.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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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>
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As it stands this check compares the number of pages to the page size.
This makes no sense and makes the fcntl fail in almost any sane case.
Fix it by checking if nr_pages is not zero (it can become zero only if
arg is too big and round_pipe_size() overflows).
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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pipe_set_size() needs to copy pipe bufs from the old circular buffer
to the new.
The current code gets this wrong in multiple ways, resulting in oops.
Test program is available here:
http://www.kernel.org/pub/linux/kernel/people/mszeredi/piperesize/
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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We do the same BUG_ON() just a line later when calling into
__bd_abort_claiming().
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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I don't like the subtle multi-context code in bd_claim (ie. detects where it
has been called based on bd_claiming). It seems clearer to just require a new
function to finish a 2-part claim.
Also improve commentary in bd_start_claiming as to how it should
be used.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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bd_start_claiming has an unbalanced module_put introduced in 6b4517a79.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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* 'for-2.6.35' of git://linux-nfs.org/~bfields/linux:
nfsd4: shut down callback queue outside state lock
nfsd: nfsd_setattr needs to call commit_metadata
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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>
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This reportedly causes a lockdep warning on nfsd shutdown. That looks
like a false positive to me, but there's no reason why this needs the
state lock anyway.
Reported-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Now that the background flush code has been fixed, we shouldn't need to
silently multiply the wbc->nr_to_write to get good writeback. Remove
that code.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.infradead.org/~dwmw2/mtd-2.6.35:
jffs2: update ctime when changing the file's permission by setfacl
jffs2: Fix NFS race by using insert_inode_locked()
jffs2: Fix in-core inode leaks on error paths
mtd: Fix NAND submenu
mtd/r852: update card detect early.
mtd/r852: Fixes in case of DMA timeout
mtd/r852: register IRQ as last step
drivers/mtd: Use memdup_user
docbook: make mtd nand module init static
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jffs2 didn't update the ctime of the file when its permission was changed.
Steps to reproduce:
# touch aaa
# stat -c %Z aaa
1275289822
# setfacl -m 'u::x,g::x,o::x' aaa
# stat -c %Z aaa
1275289822 <- unchanged
But, according to the spec of the ctime, jffs2 must update it.
Port of ext3 patch by Miao Xie <miaox@cn.fujitsu.com>.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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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>
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Pointed out by Al Viro.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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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: Fix remaining racy updates of EXT4_I(inode)->i_flags
ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only files
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A few functions were still modifying i_flags in a racy manner.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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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>
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: improve xfs_isilocked
xfs: skip writeback from reclaim context
xfs: remove done roadmap item from xfs-delayed-logging-design.txt
xfs: fix race in inode cluster freeing failing to stale inodes
xfs: fix access to upper inodes without inode64
xfs: fix might_sleep() warning when initialising per-ag tree
fs/xfs/quota: Add missing mutex_unlock
xfs: remove duplicated #include
xfs: convert more trace events to DEFINE_EVENT
xfs: xfs_trace.c: remove duplicated #include
xfs: Check new inode size is OK before preallocating
xfs: clean up xlog_align
xfs: cleanup log reservation calculactions
xfs: be more explicit if RT mount fails due to config
xfs: replace E2BIG with EFBIG where appropriate
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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