Btrfs: simplify iteration codes

Merge list_for_each* and list_entry to list_for_each_entry*

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index cdc961e7556a..a4e36c38b81e 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -325,10 +325,8 @@ static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info,
                                                   u64 flags)
 {
         struct list_head *head = &info->space_info;
-        struct list_head *cur;
         struct btrfs_space_info *found;
-        list_for_each(cur, head) {
-                found = list_entry(cur, struct btrfs_space_info, list);
+        list_for_each_entry(found, head, list) {
                 if (found->flags == flags)
                         return found;
         }
@@ -3013,7 +3011,6 @@ loop_check:
 static void dump_space_info(struct btrfs_space_info *info, u64 bytes)
 {
         struct btrfs_block_group_cache *cache;
-        struct list_head *l;
 
         printk(KERN_INFO "space_info has %llu free, is %sfull\n",
                (unsigned long long)(info->total_bytes - info->bytes_used -
@@ -3021,8 +3018,7 @@ static void dump_space_info(struct btrfs_space_info *info, u64 bytes)
                (info->full) ? "" : "not ");
 
         down_read(&info->groups_sem);
-        list_for_each(l, &info->block_groups) {
-                cache = list_entry(l, struct btrfs_block_group_cache, list);
+        list_for_each_entry(cache, &info->block_groups, list) {
                 spin_lock(&cache->lock);
                 printk(KERN_INFO "block group %llu has %llu bytes, %llu used "
                        "%llu pinned %llu reserved\n",