From: Chao Yu <yuchao0@huawei.com>
To: <jaegeuk@kernel.org>
Cc: <linux-f2fs-devel@lists.sourceforge.net>,
<linux-kernel@vger.kernel.org>, <chao@kernel.org>,
Chao Yu <yuchao0@huawei.com>
Subject: [PATCH] f2fs: enlarge block plug coverage
Date: Wed, 4 Apr 2018 16:54:04 +0800 [thread overview]
Message-ID: <20180404085404.82184-1-yuchao0@huawei.com> (raw)
This patch enlarges block plug coverage in __issue_discard_cmd, in
order to collect more pending bios before issuing them, to avoid
being disturbed by previous discard I/O in IO aware discard mode.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/segment.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 8f0b5ba46315..4287e208c040 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1208,10 +1208,12 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
pend_list = &dcc->pend_list[i];
mutex_lock(&dcc->cmd_lock);
+
+ blk_start_plug(&plug);
+
if (list_empty(pend_list))
goto next;
f2fs_bug_on(sbi, !__check_rb_tree_consistence(sbi, &dcc->root));
- blk_start_plug(&plug);
list_for_each_entry_safe(dc, tmp, pend_list, list) {
f2fs_bug_on(sbi, dc->state != D_PREP);
@@ -1227,8 +1229,9 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
if (++iter >= dpolicy->max_requests)
break;
}
- blk_finish_plug(&plug);
next:
+ blk_finish_plug(&plug);
+
mutex_unlock(&dcc->cmd_lock);
if (iter >= dpolicy->max_requests)
--
2.15.0.55.gc2ece9dc4de6
next reply other threads:[~2018-04-04 8:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-04 8:54 Chao Yu [this message]
2018-04-05 3:51 ` [PATCH] f2fs: enlarge block plug coverage Jaegeuk Kim
2018-04-08 1:29 ` Chao Yu
2018-04-09 18:02 ` Jaegeuk Kim
2018-04-10 2:34 ` Chao Yu
2018-04-10 4:10 ` Jaegeuk Kim
2018-04-10 7:22 ` Chao Yu
2018-04-13 1:06 ` Jaegeuk Kim
2018-04-13 1:27 ` Chao Yu
2018-04-13 4:07 ` Jaegeuk Kim
2018-04-13 7:13 ` Chao Yu
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