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authorGeliang Tang <geliangtang@163.com>2015-12-21 16:50:23 +0100
committerDavid Sterba <dsterba@suse.com>2016-01-07 14:42:46 +0100
commita7ca42256d9fad572fb7f2c471514d7d3572b1db (patch)
tree71f23fc115664b87d48ecaa9b239737797060352 /fs
parentbtrfs: use list_for_each_entry_safe in free-space-cache.c (diff)
downloadlinux-a7ca42256d9fad572fb7f2c471514d7d3572b1db.tar.xz
linux-a7ca42256d9fad572fb7f2c471514d7d3572b1db.zip
btrfs: use list_for_each_entry* in backref.c
Use list_for_each_entry*() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@163.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/backref.c23
1 files changed, 6 insertions, 17 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index d453d62ab0c6..08405a3da6b1 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -520,13 +520,10 @@ static inline int ref_for_same_block(struct __prelim_ref *ref1,
static int __add_missing_keys(struct btrfs_fs_info *fs_info,
struct list_head *head)
{
- struct list_head *pos;
+ struct __prelim_ref *ref;
struct extent_buffer *eb;
- list_for_each(pos, head) {
- struct __prelim_ref *ref;
- ref = list_entry(pos, struct __prelim_ref, list);
-
+ list_for_each_entry(ref, head, list) {
if (ref->parent)
continue;
if (ref->key_for_search.type)
@@ -563,23 +560,15 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info,
*/
static void __merge_refs(struct list_head *head, int mode)
{
- struct list_head *pos1;
+ struct __prelim_ref *ref1;
- list_for_each(pos1, head) {
- struct list_head *n2;
- struct list_head *pos2;
- struct __prelim_ref *ref1;
+ list_for_each_entry(ref1, head, list) {
+ struct __prelim_ref *ref2 = ref1, *tmp;
- ref1 = list_entry(pos1, struct __prelim_ref, list);
-
- for (pos2 = pos1->next, n2 = pos2->next; pos2 != head;
- pos2 = n2, n2 = pos2->next) {
- struct __prelim_ref *ref2;
+ list_for_each_entry_safe_continue(ref2, tmp, head, list) {
struct __prelim_ref *xchg;
struct extent_inode_elem *eie;
- ref2 = list_entry(pos2, struct __prelim_ref, list);
-
if (!ref_for_same_block(ref1, ref2))
continue;
if (mode == 1) {