allows us to submit much larger I/Os instead of sending down lots of small
buffer_heads.  To do this we need to have a rather complicated I/O
submission and completion tracking infrastructure.  Part of the latter has
been merged already a long time ago for direct I/O support. Part of the
problem is that we need to track sub-pagesize regions and for that we
still need buffer_heads for the time beeing.  Long-term I hope we can move
to better data strucutures and/or maybe move this to fs/mpage.c instead of
having it in XFS.  Original patch from Nathan Scott with various updates
from David Chinner and Christoph Hellwig.

SGI-PV: 947118
SGI-Modid: xfs-linux-melb:xfs-kern:203822a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

finally.

SGI-PV: 947038
SGI-Modid: xfs-linux-melb:xfs-kern:24866a
Signed-off-by: NNathan Scott <nathans@sgi.com>

was caused by ENOSPC but not Rreclaimed by xfs_release or xfs_inactive.
The fix changed the condition in xfs_release and xfs_inactive to invoke
xfs_inactive_free_eofblocks for this special case, changed
xfs_inactive_free_eofblocks to clean the delayed blks after eof. It also
changed xfs_write to set correct eof when ENOSPC occurs.

SGI-PV: 946267
SGI-Modid: xfs-linux-melb:xfs-kern:203788a
Signed-off-by: NYingping Lu <yingping@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

contention between filesystems and prevent deadlocks between filesystems
when a flush dependency exists between them.

SGI-PV: 947098
SGI-Modid: xfs-linux-melb:xfs-kern:24844a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

it needs to back out the inode creation. Tested by xfs_tests/077.

SGI-PV: 930841
SGI-Modid: xfs-linux-melb:xfs-kern:24842a
Signed-off-by: NTim Shimmin <tes@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:203709a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 929558
SGI-Modid: xfs-linux-melb:xfs-kern:203817a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 929558
SGI-Modid: xfs-linux-melb:xfs-kern:203701a
Signed-off-by: NRyan Hankins <hankins@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946444
SGI-Modid: xfs-linux-melb:xfs-kern:24768a
Signed-off-by: NNathan Scott <nathans@sgi.com>

functional with XFS without this change.

SGI-PV: 946762
SGI-Modid: xfs-linux-melb:xfs-kern:24766a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946760
SGI-Modid: xfs-linux-melb:xfs-kern:24765a
Signed-off-by: NNathan Scott <nathans@sgi.com>

updates and only sync back to the xfs inode when nessecary

SGI-PV: 946679
SGI-Modid: xfs-linux-melb:xfs-kern:203362a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946205
SGI-Modid: xfs-linux-melb:xfs-kern:203360a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

code

SGI-PV: 946641
SGI-Modid: xfs-linux-melb:xfs-kern:203328a
Signed-off-by: NEric Sandeen <sandeen@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946611
SGI-Modid: xfs-linux-melb:xfs-kern:203307a
Signed-off-by: NEric Sandeen <sandeen@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 910890
SGI-Modid: xfs-linux-melb:xfs-kern:24689a
Signed-off-by: NNathan Scott <nathans@sgi.com>

umount dquot flush call.

SGI-PV: 946444
SGI-Modid: xfs-linux-melb:xfs-kern:24680a
Signed-off-by: NNathan Scott <nathans@sgi.com>

sources.

SGI-PV: 907752
SGI-Modid: xfs-linux-melb:xfs-kern:24659a
Signed-off-by: NNathan Scott <nathans@sgi.com>

incorrectly limit people using this interface to size IO buffers.

SGI-PV: 910890
SGI-Modid: xfs-linux-melb:xfs-kern:24657a
Signed-off-by: NNathan Scott <nathans@sgi.com>

understood.

SGI-PV: 912426
SGI-Modid: xfs-linux-melb:xfs-kern:202962a
Signed-off-by: NNathan Scott <nathans@sgi.com>

consistent.

SGI-PV: 941645
SGI-Modid: xfs-linux-melb:xfs-kern:202961a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 945483
SGI-Modid: xfs-linux-melb:xfs-kern:202638a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

spotting these.

SGI-PV: 946028
SGI-Modid: xfs-linux-melb:xfs-kern:202617a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

The assertion failure came from XFS QA41. The fix is done by enabling
truncate for delayed block in xfs_inactive.

SGI-PV: 945412
SGI-Modid: xfs-linux-melb:xfs-kern:202521a
Signed-off-by: NYingping Lu <yingping@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

filesystem

SGI-PV: 912426
SGI-Modid: xfs-linux-melb:xfs-kern:202355a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

in showargs.

SGI-PV: 912426
SGI-Modid: xfs-linux-melb:xfs-kern:24383a
Signed-off-by: NNathan Scott <nathans@sgi.com>

well.  Also provides a mechanism for inheriting this property from the
parent directory for new files.

SGI-PV: 945264
SGI-Modid: xfs-linux-melb:xfs-kern:24367a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 945264
SGI-Modid: xfs-linux-melb:xfs-kern:24366a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 912426
SGI-Modid: xfs-linux-melb:xfs-kern:201981a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 907752
SGI-Modid: xfs-linux-melb:xfs-kern:201882a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 941804
SGI-Modid: xfs-linux-melb:xfs-kern:201702a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

Mark mutex_lock() and mutex_lock_interruptible() as might_sleep()
functions.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Call the mutex slowpath more conservatively - e.g.  FRAME_POINTERS can
change the calling convention, in which case a direct branch to the
slowpath becomes illegal.  Bug found by Hugh Dickins.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Remove unnecessary (and incorrect) inclusion of asm/mutex.h, pointed out
by David Howells.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NBart De Schuymer <bdschuym@pandora.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Jean-Luc Leger <reiga@dspnet.fr.eu.org> reported this alternative 
dependency on a non-existing symbol.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

EXPORT_SYMBOL's do nowadays belong to the files where the actual
functions are.

Moving the module_init/module_exit to the file with the actual functions
has the advantage of saving a few bytes due to the removal of two
functions.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: NJean Tourrilhes <jt@hpl.hp.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Small cleanups for drivers/atm/zatm.c
 Get rid of unneeded cast of kmalloc() return value.
 Small whitespace/CodingStyle/formatting cleanup (since I was in there anyway).
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Get rid of needless casting of kmalloc() return value in net/
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>