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f2fs: clear discard_wake earlier 

If SBI_NEED_FSCK is set, discard_wake will never be cleared. As a
result, the condition of wait_event_interruptible_timeout() is always
true, which gets discard thread run too frequently.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Sheng Yong 2018-05-08 17:51:34 +08:00 committed by Jaegeuk Kim
parent f9d1dced75
commit 35a9a766a1
1 changed files with 4 additions and 3 deletions
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7
fs/f2fs/segment.c
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@ -1402,6 +1402,10 @@ static int issue_discard_thread(void *data)
kthread_should_stop() || freezing(current) ||
dcc->discard_wake,
msecs_to_jiffies(wait_ms));
if (dcc->discard_wake)
dcc->discard_wake = 0;
if (try_to_freeze())
continue;
if (f2fs_readonly(sbi->sb))
@ -1413,9 +1417,6 @@ static int issue_discard_thread(void *data)
continue;
}
if (dcc->discard_wake)
dcc->discard_wake = 0;
if (sbi->gc_mode == GC_URGENT)
__init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1);