Commit 888dd183 authored by Filipe Manana's avatar Filipe Manana Committed by David Sterba
Browse files

btrfs: use the new bit BTRFS_FS_TREE_MOD_LOG_USERS at btrfs_free_tree_block() 



Instead of exposing implementation details of the tree mod log to check
if there are active tree mod log users at btrfs_free_tree_block(), use
the new bit BTRFS_FS_TREE_MOD_LOG_USERS for fs_info->flags instead. This
way extent-tree.c does not need to known about any of the internals of
the tree mod log and avoids taking a lock unnecessarily as well.

Signed-off-by: default avatarFilipe Manana <fdmanana@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent bc03f39e

fs/btrfs/extent-tree.c

+3 −5
Original line number Diff line number Diff line
@@ -3342,11 +3342,9 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans, 
		 * find a node pointing to this leaf and record operations that

		 * point to this leaf.

		 */

		if (btrfs_header_level(buf) == 0) {

			read_lock(&fs_info->tree_mod_log_lock);

			must_pin = !list_empty(&fs_info->tree_mod_seq_list);

			read_unlock(&fs_info->tree_mod_log_lock);

		}

		if (btrfs_header_level(buf) == 0 &&

		    test_bit(BTRFS_FS_TREE_MOD_LOG_USERS, &fs_info->flags))

			must_pin = true;



		if (must_pin || btrfs_is_zoned(fs_info)) {

			btrfs_redirty_list_add(trans->transaction, buf);