tree 683b74f000cd28d260674e767255e0284a9587d7
parent 34951f5cb72b1e3a89a21581cb21e2d5b6a104a4
author Christoph Hellwig <hch@infradead.org> 1311692831 +0000
committer Alex Elder <aelder@sgi.com> 1311735999 -0500

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>