Btrfs: Further reduce the concurrency penalty of defrag and drop_snapshot
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 15d0a48..7ea66b4 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -148,7 +148,6 @@
int level;
int orig_level;
int i;
- int num_runs = 0;
if (root->ref_cows == 0) {
goto out;
@@ -200,10 +199,8 @@
break;
if (wret < 0)
ret = wret;
- if (num_runs++ > 8) {
- ret = -EAGAIN;
- break;
- }
+ ret = -EAGAIN;
+ break;
}
for (i = 0; i <= orig_level; i++) {
if (path->nodes[i]) {