From eef334e5776c8ef547ada4cec17549929fe590b4 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@infradead.org>
Date: Fri, 6 Dec 2013 12:30:17 -0800
Subject: xfs: assert that we hold the ilock for extent map access
Make sure that xfs_bmapi_read has the ilock held in some way, and that
xfs_bmapi_write, xfs_bmapi_delay, xfs_bunmapi and xfs_iread_extents are
called with the ilock held exclusively.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
---
fs/xfs/xfs_inode_fork.c | 2 ++
1 file changed, 2 insertions(+)
(limited to 'fs/xfs/xfs_inode_fork.c')
diff --git a/fs/xfs/xfs_inode_fork.c b/fs/xfs/xfs_inode_fork.c
index cfee14a83cf..e16985e1c2f 100644
--- a/fs/xfs/xfs_inode_fork.c
+++ b/fs/xfs/xfs_inode_fork.c
@@ -431,6 +431,8 @@ xfs_iread_extents(
xfs_ifork_t *ifp;
xfs_extnum_t nextents;
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+
if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) {
XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW,
ip->i_mount);
--
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