[PATCH 4/5] exportfs: use lookup_one_unlocked()

[NeilBrown]

rather than locking the directory and using lookup_one(), just use
lookup_one_unlocked().  This keeps locking code centralised.

Signed-off-by: NeilBrown <neil@xxxxxxxxxx>
---
 fs/exportfs/expfs.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index cdefea17986a..d3e55de4a2a2 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -549,15 +549,13 @@ exportfs_decode_fh_raw(struct vfsmount *mnt, struct fid *fid, int fh_len,
 			goto err_result;
 		}
 
-		inode_lock(target_dir->d_inode);
-		nresult = lookup_one(mnt_idmap(mnt), &QSTR(nbuf), target_dir);
+		nresult = lookup_one_unlocked(mnt_idmap(mnt), &QSTR(nbuf), target_dir);
 		if (!IS_ERR(nresult)) {
 			if (unlikely(nresult->d_inode != result->d_inode)) {
 				dput(nresult);
 				nresult = ERR_PTR(-ESTALE);
 			}
 		}
-		inode_unlock(target_dir->d_inode);
 		/*
 		 * At this point we are done with the parent, but it's pinned
 		 * by the child dentry anyway.
-- 
2.49.0