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Commit a7ca4225 authored by Geliang Tang's avatar Geliang Tang Committed by David Sterba
Browse files

btrfs: use list_for_each_entry* in backref.c 



Use list_for_each_entry*() to simplify the code.

Signed-off-by: default avatarGeliang Tang <geliangtang@163.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 7ae1681e

fs/btrfs/backref.c

+6 −17
Original line number Diff line number Diff line
@@ -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 extent_buffer *eb;



	list_for_each(pos, head) {

	struct __prelim_ref *ref;

		ref = list_entry(pos, struct __prelim_ref, list);

	struct extent_buffer *eb;



	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;



	list_for_each(pos1, head) {

		struct list_head *n2;

		struct list_head *pos2;

	struct __prelim_ref *ref1;



		ref1 = list_entry(pos1, struct __prelim_ref, list);

	list_for_each_entry(ref1, head, list) {

		struct __prelim_ref *ref2 = ref1, *tmp;



		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) {