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platform_kernel-5.15
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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 <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-03-27 18:14:05 +08:00 committed by Jaegeuk Kim
parent 54c2258cd6
commit a54455f5ee
1 changed files with 2 additions and 4 deletions
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6
fs/f2fs/segment.c
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@ -853,9 +853,8 @@ static int issue_discard_thread(void *data)
if (kthread_should_stop()) if (kthread_should_stop())
return 0; return 0;
blk_start_plug(&plug);
mutex_lock(&dcc->cmd_lock); mutex_lock(&dcc->cmd_lock);
blk_start_plug(&plug);
list_for_each_entry_safe(dc, tmp, pend_list, list) { list_for_each_entry_safe(dc, tmp, pend_list, list) {
f2fs_bug_on(sbi, dc->state != D_PREP); f2fs_bug_on(sbi, dc->state != D_PREP);
@ -865,6 +864,7 @@ static int issue_discard_thread(void *data)
if (iter++ > DISCARD_ISSUE_RATE) if (iter++ > DISCARD_ISSUE_RATE)
break; break;
} }
blk_finish_plug(&plug);
list_for_each_entry_safe(dc, tmp, wait_list, list) { list_for_each_entry_safe(dc, tmp, wait_list, list) {
if (dc->state == D_DONE) { if (dc->state == D_DONE) {
@ -874,8 +874,6 @@ static int issue_discard_thread(void *data)
} }
mutex_unlock(&dcc->cmd_lock); mutex_unlock(&dcc->cmd_lock);
blk_finish_plug(&plug);
iter = 0; iter = 0;
congestion_wait(BLK_RW_SYNC, HZ/50); congestion_wait(BLK_RW_SYNC, HZ/50);