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Btrfs: add a incompatible format change for smaller metadata extent refs
[firefly-linux-kernel-4.4.55.git]
/
fs
/
btrfs
/
ctree.c
diff --git
a/fs/btrfs/ctree.c
b/fs/btrfs/ctree.c
index ca9d8f1a3bb67968dab36b8df98c0c2093a2300f..fe032ab6bd8a4d46e5bb2700749c2534f02f09c2 100644
(file)
--- a/
fs/btrfs/ctree.c
+++ b/
fs/btrfs/ctree.c
@@
-867,7
+867,8
@@
static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
if (btrfs_block_can_be_shared(root, buf)) {
ret = btrfs_lookup_extent_info(trans, root, buf->start,
- buf->len, &refs, &flags);
+ btrfs_header_level(buf), 1,
+ &refs, &flags);
if (ret)
return ret;
if (refs == 0) {