diff mbox series

[v13,3/4] xfs: xfs_isilocked() can only check a single lock type

Message ID 20201102194135.174806-4-preichl@redhat.com (mailing list archive)
State New
Headers show
Series xfs: Remove wrappers for some semaphores | expand

Commit Message

Pavel Reichl Nov. 2, 2020, 7:41 p.m. UTC
In its current form, xfs_isilocked() is only able to test one lock type
at a time - ilock, iolock, or mmap lock, but combinations are not
properly handled. The intent here is to check that both XFS_IOLOCK_EXCL
and XFS_ILOCK_EXCL are held, so test them each separately.

The commit ecfea3f0c8c6 ("xfs: split xfs_bmap_shift_extents") ORed the
flags together which was an error, so this patch reverts that part of
the change and check the locks independently.

Fixes: ecfea3f0c8c6 ("xfs: split xfs_bmap_shift_extents")

Suggested-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Pavel Reichl <preichl@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/libxfs/xfs_bmap.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 666aa47e4f4f..558e113e267f 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -5792,7 +5792,8 @@  xfs_bmap_collapse_extents(
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;
 
-	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL));
+	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
+	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 
 	if (!(ifp->if_flags & XFS_IFEXTENTS)) {
 		error = xfs_iread_extents(tp, ip, whichfork);
@@ -5909,7 +5910,8 @@  xfs_bmap_insert_extents(
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;
 
-	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL));
+	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
+	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 
 	if (!(ifp->if_flags & XFS_IFEXTENTS)) {
 		error = xfs_iread_extents(tp, ip, whichfork);