read_chunk_tree() calls read_one_dev(), but for seed device we have
to search the fs_uuids list, so we need the uuid_mutex. Add a comment
comment, so that we can improve this part.
Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
fs/btrfs/volumes.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 29799d39554a..8996a1df9a21 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6889,6 +6889,10 @@ int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info)
if (!path)
return -ENOMEM;
+ /*
+ * uuid_mutex is needed only if we are mounting a sprout FS
+ * otherwise we don't need it.
+ */
mutex_lock(&uuid_mutex);
mutex_lock(&fs_info->chunk_mutex);
--
2.7.0
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