xfs: force the log if we encounter pinned buffers in .iop_pushbuf
authorChristoph Hellwig <hch@infradead.org>
Tue, 11 Oct 2011 15:14:09 +0000 (15:14 +0000)
committerAlex Elder <aelder@sgi.com>
Tue, 11 Oct 2011 16:02:48 +0000 (11:02 -0500)
commit17b38471c3c07a49f0bbc2ecc2e92050c164e226
tree163e112a5736240efc29dab83d0603c931dff98f
parentbc6e588a8971aa74c02e42db4d6e0248679f3738
xfs: force the log if we encounter pinned buffers in .iop_pushbuf

We need to check for pinned buffers even in .iop_pushbuf given that inode
items flush into the same buffers that may be pinned directly due operations
on the unlinked inode list operating directly on buffers.  To do this add a
return value to .iop_pushbuf that tells the AIL push about this and use
the existing log force mechanisms to unpin it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Tested-by: Stefan Priebe <s.priebe@profihost.ag>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
fs/xfs/xfs_buf_item.c
fs/xfs/xfs_dquot_item.c
fs/xfs/xfs_inode_item.c
fs/xfs/xfs_trans.h
fs/xfs/xfs_trans_ail.c