[PATCH 6/7] xfs: don't pick up IOLOCK during rmapbt repair scan

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From: Darrick J. Wong <djwong@xxxxxxxxxx>

Now that we've fixed the directory operations to hold the ILOCK until
they're finished with rmapbt updates for directory shape changes, we no
longer need to take this lock when scanning directories for rmapbt
records.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 fs/xfs/scrub/rmap_repair.c |   16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)


diff --git a/fs/xfs/scrub/rmap_repair.c b/fs/xfs/scrub/rmap_repair.c
index 2a9598a6fddb..c51f49afc1f1 100644
--- a/fs/xfs/scrub/rmap_repair.c
+++ b/fs/xfs/scrub/rmap_repair.c
@@ -567,23 +567,9 @@ xrep_rmap_scan_inode(
 	struct xrep_rmap	*rr,
 	struct xfs_inode	*ip)
 {
-	unsigned int		lock_mode = 0;
+	unsigned int		lock_mode = xrep_rmap_scan_ilock(ip);
 	int			error;
 
-	/*
-	 * Directory updates (create/link/unlink/rename) drop the directory's
-	 * ILOCK before finishing any rmapbt updates associated with directory
-	 * shape changes.  For this scan to coordinate correctly with the live
-	 * update hook, we must take the only lock (i_rwsem) that is held all
-	 * the way to dir op completion.  This will get fixed by the parent
-	 * pointer patchset.
-	 */
-	if (S_ISDIR(VFS_I(ip)->i_mode)) {
-		lock_mode = XFS_IOLOCK_SHARED;
-		xfs_ilock(ip, lock_mode);
-	}
-	lock_mode |= xrep_rmap_scan_ilock(ip);
-
 	/* Check the data fork. */
 	error = xrep_rmap_scan_ifork(rr, ip, XFS_DATA_FORK);
 	if (error)




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