* [PATCH] f2fs: fix the way to wake up issue_flush thread
@ 2018-05-03 7:45 Yunlong Song
2018-05-03 7:57 ` Yunlong Song
0 siblings, 1 reply; 2+ messages in thread
From: Yunlong Song @ 2018-05-03 7:45 UTC (permalink / raw)
To: jaegeuk, chao, yuchao0, yunlong.song, yunlong.song
Cc: miaoxie, bintian.wang, shengyong1, heyunlei, linux-f2fs-devel,
linux-kernel
Commit 6f890df0 ("f2fs: fix out-of-order execution in f2fs_issue_flush")
uses waitqueue_active to wake up issue_flush thread, but there is no
wait entry to wake in this queue, so change it back to use the original
fcc->dispatch_list to wake up issue_flush thread.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
---
fs/f2fs/segment.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 503a98a..5aa5ee4e 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -612,7 +612,7 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
/* update issue_list before we wake up issue_flush thread */
smp_mb();
- if (waitqueue_active(&fcc->flush_wait_queue))
+ if (!fcc->dispatch_list)
wake_up(&fcc->flush_wait_queue);
if (fcc->f2fs_issue_flush) {
--
1.8.5.2
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] f2fs: fix the way to wake up issue_flush thread
2018-05-03 7:45 [PATCH] f2fs: fix the way to wake up issue_flush thread Yunlong Song
@ 2018-05-03 7:57 ` Yunlong Song
0 siblings, 0 replies; 2+ messages in thread
From: Yunlong Song @ 2018-05-03 7:57 UTC (permalink / raw)
To: jaegeuk, chao, yuchao0, yunlong.song
Cc: miaoxie, bintian.wang, shengyong1, heyunlei, linux-f2fs-devel,
linux-kernel
Please avoid this patch, I make a mistake.
On 2018/5/3 15:45, Yunlong Song wrote:
> Commit 6f890df0 ("f2fs: fix out-of-order execution in f2fs_issue_flush")
> uses waitqueue_active to wake up issue_flush thread, but there is no
> wait entry to wake in this queue, so change it back to use the original
> fcc->dispatch_list to wake up issue_flush thread.
>
> Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
> ---
> fs/f2fs/segment.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 503a98a..5aa5ee4e 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -612,7 +612,7 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
> /* update issue_list before we wake up issue_flush thread */
> smp_mb();
>
> - if (waitqueue_active(&fcc->flush_wait_queue))
> + if (!fcc->dispatch_list)
> wake_up(&fcc->flush_wait_queue);
>
> if (fcc->f2fs_issue_flush) {
--
Thanks,
Yunlong Song
^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-05-03 7:45 [PATCH] f2fs: fix the way to wake up issue_flush thread Yunlong Song
2018-05-03 7:57 ` Yunlong Song
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