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authorChristoph Hellwig <hch@infradead.org>2009-07-18 18:15:00 -0400
committerFelix Blyakher <felixb@sgi.com>2009-08-12 01:07:53 -0500
commit7b02ecb3031b192823bc732ae717febc0a59aa92 (patch)
treeaeb5e3c56f4634ad3b391dd8a7eab1fce81f0eea
parent10746e47e722b5688fcd6eba9fbf9b2e64a248a7 (diff)
downloadconfigs-7b02ecb3031b192823bc732ae717febc0a59aa92.tar.gz
xfs: switch to NOFS allocation under i_lock in xfs_readlink_bmap
xfs_readlink_bmap is 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>
-rw-r--r--fs/xfs/xfs_vnodeops.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index c4eca5ed5da..492d75bae2b 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -538,7 +538,9 @@ xfs_readlink_bmap(
d = XFS_FSB_TO_DADDR(mp, mval[n].br_startblock);
byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount);
- bp = xfs_buf_read(mp->m_ddev_targp, d, BTOBB(byte_cnt), 0);
+ bp = xfs_buf_read_flags(mp->m_ddev_targp, d, BTOBB(byte_cnt),
+ XBF_LOCK | XBF_MAPPED |
+ XBF_DONT_BLOCK);
error = XFS_BUF_GETERROR(bp);
if (error) {
xfs_ioerror_alert("xfs_readlink",