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authorDavid Sterba <dsterba@suse.com>2020-05-15 19:35:55 +0200
committerDavid Sterba <dsterba@suse.com>2020-05-25 11:25:36 +0200
commit56e9357a1e8167134388d4c70654795353765c7b (patch)
treee89265fd992d94c54fffb639cf4ee39bd268cfdb /fs/btrfs/export.c
parent1dae7e0e58b484eaa43d530f211098fdeeb0f404 (diff)
btrfs: simplify root lookup by id
The main function to lookup a root by its id btrfs_get_fs_root takes the whole key, while only using the objectid. The value of offset is preset to (u64)-1 but not actually used until btrfs_find_root that does the actual search. Switch btrfs_get_fs_root to use only objectid and remove all local variables that existed just for the lookup. The actual key for search is set up in btrfs_get_fs_root, reusing another key variable. Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/export.c')
-rw-r--r--fs/btrfs/export.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 2bb25d2dc44b..e7cc98b4d7dc 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -69,11 +69,7 @@ struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
if (objectid < BTRFS_FIRST_FREE_OBJECTID)
return ERR_PTR(-ESTALE);
- key.objectid = root_objectid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
- root = btrfs_get_fs_root(fs_info, &key, true);
+ root = btrfs_get_fs_root(fs_info, root_objectid, true);
if (IS_ERR(root))
return ERR_CAST(root);