ceph: remove useless IS_ERR checks

ceph_lookup_snap_realm either returns a valid pointer or NULL; there is no
need to check IS_ERR(result).

Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index 2e3cb40b7e48f620f9d578296fbfa530ef60f4ef..52f46a1208f5ea34864d7ae0bf837e27d75c0269 100644 (file)
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -226,8 +226,6 @@ static int adjust_snap_realm_parent(struct ceph_mds_client *mdsc,
                return 0;
 
        parent = ceph_lookup_snap_realm(mdsc, parentino);
-       if (IS_ERR(parent))
-               return PTR_ERR(parent);
        if (!parent) {
                parent = ceph_create_snap_realm(mdsc, parentino);
                if (IS_ERR(parent))
@@ -541,10 +539,6 @@ more:
        p += sizeof(u64) * le32_to_cpu(ri->num_prior_parent_snaps);
 
        realm = ceph_lookup_snap_realm(mdsc, le64_to_cpu(ri->ino));
-       if (IS_ERR(realm)) {
-               err = PTR_ERR(realm);
-               goto fail;
-       }
        if (!realm) {
                realm = ceph_create_snap_realm(mdsc, le64_to_cpu(ri->ino));
                if (IS_ERR(realm)) {
@@ -762,8 +756,6 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
                ri = p;
 
                realm = ceph_lookup_snap_realm(mdsc, split);
-               if (IS_ERR(realm))
-                       goto out;
                if (!realm) {
                        realm = ceph_create_snap_realm(mdsc, split);
                        if (IS_ERR(realm))
@@ -829,8 +821,6 @@ skip_inode:
                        struct ceph_snap_realm *child =
                                ceph_lookup_snap_realm(mdsc,
                                           le64_to_cpu(split_realms[i]));
-                       if (IS_ERR(child))
-                               continue;
                        if (!child)
                                continue;
                        adjust_snap_realm_parent(mdsc, child, realm->ino);