From: Christoph Hellwig <hch@lst.de>
Date: Mon, 23 Oct 2017 23:32:38 +0000 (-0700)
Subject: xfs: add asserts for the mmap lock in xfs_{insert,collapse}_file_space
X-Git-Tag: v4.19~2220^2~61
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9ad1a23afb6c561acfa62850934ddc6c70c35994;p=platform%2Fkernel%2Flinux-rpi.git

xfs: add asserts for the mmap lock in xfs_{insert,collapse}_file_space

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---

diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 034f342..170b74c 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1334,6 +1334,8 @@ xfs_collapse_file_space(
 	bool			done = false;
 
 	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
+	ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
+
 	trace_xfs_collapse_file_space(ip);
 
 	error = xfs_free_file_space(ip, offset, len);
@@ -1408,6 +1410,8 @@ xfs_insert_file_space(
 	bool			done = false;
 
 	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
+	ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
+
 	trace_xfs_insert_file_space(ip);
 
 	error = xfs_prepare_shift(ip, offset);