* [PATCH] btrfs: add cond_resched to btrfs_qgroup_trace_leaf_items
@ 2017-06-20 12:15 jeffm
2017-06-21 13:47 ` David Sterba
0 siblings, 1 reply; 2+ messages in thread
From: jeffm @ 2017-06-20 12:15 UTC (permalink / raw)
To: linux-btrfs; +Cc: Jeff Mahoney
From: Jeff Mahoney <jeffm@suse.com>
On an uncontended system, we can end up hitting soft lockups while
doing replace_path. At the core, and frequently called is
btrfs_qgroup_trace_leaf_items, so it makes sense to add a cond_resched
there.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
fs/btrfs/qgroup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index deffbeb74a0b..7a3cfa22e178 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1559,6 +1559,7 @@ int btrfs_qgroup_trace_leaf_items(struct btrfs_trans_handle *trans,
if (ret)
return ret;
}
+ cond_resched();
return 0;
}
--
2.11.0
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2017-06-20 12:15 [PATCH] btrfs: add cond_resched to btrfs_qgroup_trace_leaf_items jeffm
2017-06-21 13:47 ` David Sterba
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