UBIFS: list usage cleanup

Trivial cleanup, list_del(); list_add{,_tail}() is equivalent
to list_move{,_tail}(). Semantic patch for coccinelle can be
found at www.cccmz.de/~snakebyte/list_move_tail.spatch

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

diff --git a/fs/ubifs/log.c b/fs/ubifs/log.c
index 3e0aa73..1004261 100644 (file)
--- a/fs/ubifs/log.c
+++ b/fs/ubifs/log.c
@@ -367,7 +367,6 @@ static void remove_buds(struct ubifs_info *c)
                                bud->jhead, c->leb_size - bud->start,
                                c->cmt_bud_bytes);
                        rb_erase(p1, &c->buds);
-                       list_del(&bud->list);
                        /*
                         * If the commit does not finish, the recovery will need
                         * to replay the journal, in which case the old buds
@@ -375,7 +374,7 @@ static void remove_buds(struct ubifs_info *c)
                         * commit i.e. do not allow them to be garbage
                         * collected.
                         */
-                       list_add(&bud->list, &c->old_buds);
+                       list_move(&bud->list, &c->old_buds);
                }
        }
        spin_unlock(&c->buds_lock);

diff --git a/fs/ubifs/shrinker.c b/fs/ubifs/shrinker.c
index e7bab52..02feb59 100644 (file)
--- a/fs/ubifs/shrinker.c
+++ b/fs/ubifs/shrinker.c
@@ -206,8 +206,7 @@ static int shrink_tnc_trees(int nr, int age, int *contention)
                 * Move this one to the end of the list to provide some
                 * fairness.
                 */
-               list_del(&c->infos_list);
-               list_add_tail(&c->infos_list, &ubifs_infos);
+               list_move_tail(&c->infos_list, &ubifs_infos);
                mutex_unlock(&c->umount_mutex);
                if (freed >= nr)
                        break;
@@ -263,8 +262,7 @@ static int kick_a_thread(void)
                        }
 
                        if (i == 1) {
-                               list_del(&c->infos_list);
-                               list_add_tail(&c->infos_list, &ubifs_infos);
+                               list_move_tail(&c->infos_list, &ubifs_infos);
                                spin_unlock(&ubifs_infos_lock);
 
                                ubifs_request_bg_commit(c);