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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>
This commit is contained in:
Yan Zheng 2009-07-24 12:42:46 -04:00 committed by Chris Mason
parent 0a4eefbb74
commit d717aa1d31
1 changed files with 1 additions and 4 deletions
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5
fs/btrfs/ctree.c
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@ -1040,9 +1040,6 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
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 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
}
/* 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