If request_count >= BLK_MAX_REQUEST_COUNT,then it will exec
blk_flush_plug_list which plug all request.So no need to do plug->should_sort test.
Signed-off-by: Jianpeng Ma <[email protected]>
---
block/blk-core.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 4b4dbdf..7a3abc6 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1514,17 +1514,16 @@ get_rq:
if (list_empty(&plug->list))
trace_block_plug(q);
else {
- if (!plug->should_sort) {
+ if (request_count >= BLK_MAX_REQUEST_COUNT) {
+ blk_flush_plug_list(plug, false);
+ trace_block_plug(q);
+ } else if (!plug->should_sort) {
struct request *__rq;
__rq = list_entry_rq(plug->list.prev);
if (__rq->q != q)
plug->should_sort = 1;
}
- if (request_count >= BLK_MAX_REQUEST_COUNT) {
- blk_flush_plug_list(plug, false);
- trace_block_plug(q);
- }
}
list_add_tail(&req->queuelist, &plug->list);
drive_stat_acct(req, 1);
--
1.7.9.5
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