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authorChristoph Hellwig <hch@infradead.org>2009-07-18 18:15:01 -0400
committerFelix Blyakher <felixb@sgi.com>2009-08-12 01:08:01 -0500
commitddd3a14e0f030f0f7b900621f67532285b8657ef (patch)
treed8c0d11c5adc45b1a6657ddd51b6435e3d28f1f9 /fs
parent7b02ecb3031b192823bc732ae717febc0a59aa92 (diff)
downloadlinux-ddd3a14e0f030f0f7b900621f67532285b8657ef.tar.gz
xfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_get
xfs_attr_rmtval_get is always called with i_lock held, but i_lock is taken
in reclaim context so all allocations under it must avoid recursions into
the filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_attr.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index bfb583791fe2..4ece1906bd41 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -2010,7 +2010,9 @@ xfs_attr_rmtval_get(xfs_da_args_t *args)
 			dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock);
 			blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
 			error = xfs_read_buf(mp, mp->m_ddev_targp, dblkno,
-					     blkcnt, XFS_BUF_LOCK, &bp);
+					     blkcnt,
+					     XFS_BUF_LOCK | XBF_DONT_BLOCK,
+					     &bp);
 			if (error)
 				return(error);