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xfs: force the log if we encounter pinned buffers in .iop_pushbuf

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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>
This commit is contained in:
Christoph Hellwig
2011-10-11 15:14:09 +00:00
committed by Alex Elder
parent bc6e588a89
commit 17b38471c3
5 changed files with 24 additions and 10 deletions
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9
fs/xfs/xfs_trans_ail.c
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@ -427,8 +427,13 @@ xfs_ail_worker(
case XFS_ITEM_PUSHBUF:
XFS_STATS_INC(xs_push_ail_pushbuf);
IOP_PUSHBUF(lip);
ailp->xa_last_pushed_lsn = lsn;
if (!IOP_PUSHBUF(lip)) {
stuck++;
flush_log = 1;
} else {
ailp->xa_last_pushed_lsn = lsn;
}
push_xfsbufd = 1;
break;