From fa3a914e8bf8f0f06e9423fc857ca4f5d44d00d3 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 27 Mar 2017 18:14:05 +0800 Subject: [PATCH] f2fs: shrink blk plug region Don't use blk plug covering area where there won't be any IOs being issued. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 40474e7c2033..1e726e893eec 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -932,9 +932,8 @@ repeat: if (kthread_should_stop()) return 0; - blk_start_plug(&plug); - mutex_lock(&dcc->cmd_lock); + blk_start_plug(&plug); list_for_each_entry_safe(dc, tmp, pend_list, list) { f2fs_bug_on(sbi, dc->state != D_PREP); @@ -944,6 +943,7 @@ repeat: if (iter++ > DISCARD_ISSUE_RATE) break; } + blk_finish_plug(&plug); list_for_each_entry_safe(dc, tmp, wait_list, list) { if (dc->state == D_DONE) { @@ -953,8 +953,6 @@ repeat: } mutex_unlock(&dcc->cmd_lock); - blk_finish_plug(&plug); - iter = 0; congestion_wait(BLK_RW_SYNC, HZ/50);