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Commit e34a5b4f authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: Add some conditional schedules near the alloc_mutex 



This helps prevent stalls, especially while the snapshot cleaner is
running hard

Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 6dddcbeb

fs/btrfs/extent-tree.c

+2 −0
Original line number Diff line number Diff line
@@ -937,6 +937,7 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, 
	level = btrfs_header_level(buf);

	nritems = btrfs_header_nritems(buf);

	for (i = 0; i < nritems; i++) {

		cond_resched();

		if (level == 0) {

			u64 disk_bytenr;

			btrfs_item_key_to_cpu(buf, &key, i);
@@ -2189,6 +2190,7 @@ static int noinline drop_leaf_ref(struct btrfs_trans_handle *trans, 


	for (i = 0; i < nritems; i++) {

		u64 disk_bytenr;

		cond_resched();



		btrfs_item_key_to_cpu(leaf, &key, i);

		if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)