[v2,2/3] btrfs: get mapping tree directly from fsinfo in find_first_block_group
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Message ID 20200527081227.3408-3-johannes.thumshirn@wdc.com
State New
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Series
  • 3 small cleanups for find_first_block_group
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Commit Message

Johannes Thumshirn May 27, 2020, 8:12 a.m. UTC
We already have an fs_info in our function parameters, there's no need to
do the maths again and get fs_info from the extent_root just to get the
mapping_tree.

Instead directly grab the mapping_tree from fs_info.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/block-group.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
diff mbox series

diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index c5acd89c864c..c4462e4c8413 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -1556,7 +1556,7 @@  static int find_first_block_group(struct btrfs_fs_info *fs_info,
 			struct extent_map_tree *em_tree;
 			struct extent_map *em;
 
-			em_tree = &root->fs_info->mapping_tree;
+			em_tree = &fs_info->mapping_tree;
 			read_lock(&em_tree->lock);
 			em = lookup_extent_mapping(em_tree, found_key.objectid,
 						   found_key.offset);