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authorChristoph Hellwig <hch@infradead.org>2011-07-26 15:07:11 +0000
committerAlex Elder <aelder@sgi.com>2011-07-26 22:06:39 -0500
commitd1166ec792c96b65e4c18cbc5985944b5309d838 (patch)
tree683b74f000cd28d260674e767255e0284a9587d7 /fs/xfs/linux-2.6/xfs_file.c
parentxfs: flag all buffers as metadata (diff)
downloadlinux-dev-d1166ec792c96b65e4c18cbc5985944b5309d838.tar.xz
linux-dev-d1166ec792c96b65e4c18cbc5985944b5309d838.zip
xfs: prevent against ioend livelocks in xfs_file_fsync
We need to take some locks to prevent new ioends from coming in when we wait for all existing ones to go away. Up to Linux 3.0 that was done using the i_mutex held by the VFS fsync code, but now that we are called without it we need to take care of it ourselves. Use the I/O lock instead of i_mutex just like we do in other places. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to '')
-rw-r--r--fs/xfs/linux-2.6/xfs_file.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index 825390e1c138..7f7b42469ea7 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -149,7 +149,9 @@ xfs_file_fsync(
xfs_iflags_clear(ip, XFS_ITRUNCATED);
+ xfs_ilock(ip, XFS_IOLOCK_SHARED);
xfs_ioend_wait(ip);
+ xfs_iunlock(ip, XFS_IOLOCK_SHARED);
if (mp->m_flags & XFS_MOUNT_BARRIER) {
/*