Commit 9257d863 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by David Sterba
Browse files

btrfs: don't try to delete RAID stripe-extents if we don't need to 



Even if the RAID stripe-tree is not enabled in the filesystem,
do_free_extent_accounting() still calls into btrfs_delete_raid_extent().

Check if the extent in question is on a block-group that has a profile
which is used by RAID stripe-tree before attempting to delete a stripe
extent. Return early if it doesn't, otherwise we're doing a unnecessary
search.

Reviewed-by: default avatarFilipe Manana <fdmanana@suse.com>
Signed-off-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent c221a9a2

fs/btrfs/raid-stripe-tree.c

+14 −1
Original line number Diff line number Diff line
@@ -59,9 +59,22 @@ int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 le 
	int slot;

	int ret;



	if (!stripe_root)

	if (!btrfs_fs_incompat(fs_info, RAID_STRIPE_TREE) || !stripe_root)

		return 0;



	if (!btrfs_is_testing(fs_info)) {

		struct btrfs_chunk_map *map;

		bool use_rst;



		map = btrfs_find_chunk_map(fs_info, start, length);

		if (!map)

			return -EINVAL;

		use_rst = btrfs_need_stripe_tree_update(fs_info, map->type);

		btrfs_free_chunk_map(map);

		if (!use_rst)

			return 0;

	}



	path = btrfs_alloc_path();

	if (!path)

		return -ENOMEM;