Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b4f359ab authored by Tsutomu Itoh's avatar Tsutomu Itoh Committed by Chris Mason
Browse files

Btrfs: remove unnecessary code in btree_get_extent() 



Unnecessary lookup_extent_mapping() is removed because an error is
returned to the caller.
This patch was made based on the advice from Stefan Behrens, thanks.

Signed-off-by: default avatarTsutomu Itoh <t-itoh@jp.fujitsu.com>
parent 0433f20d

fs/btrfs/disk-io.c

+1 −7
Original line number Diff line number Diff line
@@ -217,16 +217,10 @@ static struct extent_map *btree_get_extent(struct inode *inode, 
	write_lock(&em_tree->lock);

	ret = add_extent_mapping(em_tree, em);

	if (ret == -EEXIST) {

		u64 failed_start = em->start;

		u64 failed_len = em->len;



		free_extent_map(em);

		em = lookup_extent_mapping(em_tree, start, len);

		if (!em) {

			lookup_extent_mapping(em_tree, failed_start,

					      failed_len);

		if (!em)

			em = ERR_PTR(-EIO);

		}

	} else if (ret) {

		free_extent_map(em);

		em = ERR_PTR(ret);