vfs: make fchownat retry once on ESTALE errors
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/open.c b/fs/open.c
index 99c3ce5..9b33c0cb 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -582,6 +582,7 @@
lookup_flags = (flag & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW;
if (flag & AT_EMPTY_PATH)
lookup_flags |= LOOKUP_EMPTY;
+retry:
error = user_path_at(dfd, filename, lookup_flags, &path);
if (error)
goto out;
@@ -592,6 +593,10 @@
mnt_drop_write(path.mnt);
out_release:
path_put(&path);
+ if (retry_estale(error, lookup_flags)) {
+ lookup_flags |= LOOKUP_REVAL;
+ goto retry;
+ }
out:
return error;
}