Btrfs: remove unnecessary btrfs_mark_buffer_dirty in split_leaf
When we're not able to get enough space through splitting leaf,
we'd create a new sibling leaf instead, and it's possible that we return
a zero-nritem sibling leaf and mark it dirty before it's in a consistent
state. With CONFIG_BTRFS_FS_CHECK_INTEGRITY=y, the integrity check of
check_leaf will report panic due to this zero-nritem non-root leaf.
This removes the unnecessary btrfs_mark_buffer_dirty.
Reported-by: Filipe Manana <fdmanana@gmail.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 8f67a14..f6ba165 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -4311,7 +4311,11 @@
if (path->slots[1] == 0)
fixup_low_keys(fs_info, path, &disk_key, 1);
}
- btrfs_mark_buffer_dirty(right);
+ /*
+ * We create a new leaf 'right' for the required ins_len and
+ * we'll do btrfs_mark_buffer_dirty() on this leaf after copying
+ * the content of ins_len to 'right'.
+ */
return ret;
}