| Message ID | 1368533335-19381-2-git-send-email-bo.li.liu@oracle.com |
|---|---|
| State | Superseded, archived |
| Headers | show |
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index c219463..be8d5cb 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -320,6 +320,13 @@ void btrfs_merge_delayed_refs(struct btrfs_trans_handle *trans, struct rb_node *node; u64 seq = 0; + /* + * We don't have too much refs to merge in the case of delayed data + * refs. + */ + if (head->is_data) + return; + spin_lock(&fs_info->tree_mod_seq_lock); if (!list_empty(&fs_info->tree_mod_seq_list)) { struct seq_list *elem;
When we have data deduplication on, we'll hang on the merge part because it needs to verify every queued delayed data refs related to this disk offset. And in the case of delayed data refs, we don't usually have too much data refs to merge. So it's safe to shut it down for data refs. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> --- fs/btrfs/delayed-ref.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)