Btrfs: Let some locks go during defrag and snapshot dropping
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 26b8d340..f7d76d3 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1018,7 +1018,7 @@
if (num_blocks == 0) {
fill_prealloc = 1;
num_blocks = 1;
- total_needed = (min(level + 1, BTRFS_MAX_LEVEL) + 2) * 3;
+ total_needed = (min(level + 1, BTRFS_MAX_LEVEL)) * 6;
}
if (fill_prealloc) {
u64 first;
@@ -1300,6 +1300,8 @@
ins->objectid;
ret = update_block_group(trans, root,
ins->objectid, ins->offset, 1, 0, 0);
+ WARN_ON(info->extent_tree_insert_nr >
+ ARRAY_SIZE(info->extent_tree_insert));
BUG_ON(ret);
return 0;
}
@@ -1628,7 +1630,7 @@
if (wret < 0)
ret = wret;
num_walks++;
- if (num_walks > 10) {
+ if (num_walks > 2) {
ret = -EAGAIN;
get_bh(root->node);
break;