From: Christoph Hellwig <hch@lst.de>
Date: Mon, 13 Apr 2015 01:38:29 +0000 (+1000)
Subject: xfs: unlock i_mutex in xfs_break_layouts
X-Git-Tag: omap-for-v4.2/o2_dc~34^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=21c3ea18819b5f650c75f59a0457415bc05d2b17;p=pandora-kernel.git

xfs: unlock i_mutex in xfs_break_layouts

We want to drop all I/O path locks when recalling layouts, and that includes
i_mutex for the write path.  Without this we get stuck processe when recalls
take too long.

[dchinner: fix build with !CONFIG_PNFS]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index edeaccc7961a..f63aeddd31d5 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -555,7 +555,7 @@ restart:
 	if (error)
 		return error;
 
-	error = xfs_break_layouts(inode, iolock);
+	error = xfs_break_layouts(inode, iolock, true);
 	if (error)
 		return error;
 
@@ -842,7 +842,7 @@ xfs_file_fallocate(
 		return -EOPNOTSUPP;
 
 	xfs_ilock(ip, iolock);
-	error = xfs_break_layouts(inode, &iolock);
+	error = xfs_break_layouts(inode, &iolock, false);
 	if (error)
 		goto out_unlock;
 
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