openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

f2fs: stop issuing discard immediately if there is queued IO 

For background discard policy, even if there is queued user IO, still
we will check max_requests times for next discard entry, it is unneeded,
let's just stop this round submission immediately.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2018-07-08 22:08:09 +08:00 committed by Jaegeuk Kim
parent 4c6b56c002
commit 522d1711d6
1 changed files with 5 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
fs/f2fs/segment.c
View File

@ -1188,7 +1188,7 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
struct list_head *pend_list;
struct discard_cmd *dc, *tmp;
struct blk_plug plug;
int i, iter = 0, issued = 0;
int i, issued = 0;
bool io_interrupted = false;
for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
@ -1209,20 +1209,19 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
!is_idle(sbi)) {
io_interrupted = true;
goto skip;
break;
}
__submit_discard_cmd(sbi, dpolicy, dc);
issued++;
skip:
if (++iter >= dpolicy->max_requests)
if (++issued >= dpolicy->max_requests)
break;
}
blk_finish_plug(&plug);
next:
mutex_unlock(&dcc->cmd_lock);
if (iter >= dpolicy->max_requests)
if (issued >= dpolicy->max_requests || io_interrupted)
break;
}