From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Yu Subject: [PATCH] f2fs: turn down IO priority of discard from background Date: Tue, 10 Apr 2018 15:26:08 +0800 Message-ID: <20180410072608.12323-1-yuchao0@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, chao@kernel.org, Chao Yu List-Id: linux-f2fs-devel.lists.sourceforge.net In order to interfere normal r/w IO, let's turn down IO priority of discard issued from background. Signed-off-by: Chao Yu --- fs/f2fs/segment.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index aabe0d6b8307..5e708debeb9c 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1723,6 +1723,7 @@ void init_discard_policy(struct discard_policy *dpolicy, dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; dpolicy->io_aware = true; + dpolicy->sync = false; } else if (discard_type == DPOLICY_FORCE) { dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; -- 2.15.0.55.gc2ece9dc4de6