diff options
Diffstat (limited to 'fs/ext4/block_validity.c')
| -rw-r--r-- | fs/ext4/block_validity.c | 33 |
1 files changed, 4 insertions, 29 deletions
diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 3f11656bd72e..41eb9dcfac7e 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -180,37 +180,12 @@ int ext4_setup_system_zone(struct super_block *sb) /* Called when the filesystem is unmounted */ void ext4_release_system_zone(struct super_block *sb) { - struct rb_node *n = EXT4_SB(sb)->system_blks.rb_node; - struct rb_node *parent; - struct ext4_system_zone *entry; + struct ext4_system_zone *entry, *n; - while (n) { - /* Do the node's children first */ - if (n->rb_left) { - n = n->rb_left; - continue; - } - if (n->rb_right) { - n = n->rb_right; - continue; - } - /* - * The node has no children; free it, and then zero - * out parent's link to it. Finally go to the - * beginning of the loop and try to free the parent - * node. - */ - parent = rb_parent(n); - entry = rb_entry(n, struct ext4_system_zone, node); + rbtree_postorder_for_each_entry_safe(entry, n, + &EXT4_SB(sb)->system_blks, node) kmem_cache_free(ext4_system_zone_cachep, entry); - if (!parent) - EXT4_SB(sb)->system_blks = RB_ROOT; - else if (parent->rb_left == n) - parent->rb_left = NULL; - else if (parent->rb_right == n) - parent->rb_right = NULL; - n = parent; - } + EXT4_SB(sb)->system_blks = RB_ROOT; } |