Btrfs: Avoid delayed reference update looping
btrfs_split_leaf and btrfs_del_items can end up in a loop
where one is constantly spliting a given leaf and the other
is constantly merging it back with the adjacent nodes.
There is a better fix for this, but in the interest of something
small, this patch just changes btrfs_del_items back to balancing less
often.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 978449a..3fdcc05 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1040,9 +1040,6 @@
BTRFS_NODEPTRS_PER_BLOCK(root) / 4)
return 0;
- if (btrfs_header_nritems(mid) > 2)
- return 0;
-
if (btrfs_header_nritems(mid) < 2)
err_on_enospc = 1;
@@ -3796,7 +3793,7 @@
}
/* delete the leaf if it is mostly empty */
- if (used < BTRFS_LEAF_DATA_SIZE(root) / 2) {
+ if (used < BTRFS_LEAF_DATA_SIZE(root) / 3) {
/* push_leaf_left fixes the path.
* make sure the path still points to our leaf
* for possible call to del_ptr below