[f2fs-dev] [PATCH v2] f2fs: reset wait_ms to default if any of the victims have been selected

[f2fs-dev] [PATCH v2] f2fs: reset wait_ms to default if any of the victims have been selected

[Yuwei Guan]

In non-foreground gc mode, if no victim is selected, the gc process
will wait for no_gc_sleep_time before waking up again. In this
subsequent time, even though a victim will be selected, the gc process
still waits for no_gc_sleep_time before waking up. The configuration
of wait_ms is not reasonable.

After any of the victims have been selected, we need to reset wait_ms to
default sleep time from no_gc_sleep_time.

Signed-off-by: Yuwei Guan <Yuwei.Guan@zeekrlife.com>
---
 fs/f2fs/gc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index f0c6506d8975..d7a9d84ba57c 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -141,6 +141,10 @@ static int gc_thread_func(void *data)
 			/* don't bother wait_ms by foreground gc */
 			if (!foreground)
 				wait_ms = gc_th->no_gc_sleep_time;
+		} else {
+			/* reset wait_ms to default sleep time */
+			if (wait_ms == gc_th->no_gc_sleep_time)
+				wait_ms = gc_th->min_sleep_time;
 		}
 
 		if (foreground)
-- 
2.34.1



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Re: [f2fs-dev] [PATCH v2] f2fs: reset wait_ms to default if any of the victims have been selected

[Chao Yu]

On 2022/12/11 21:08, Yuwei Guan wrote:
> In non-foreground gc mode, if no victim is selected, the gc process
> will wait for no_gc_sleep_time before waking up again. In this
> subsequent time, even though a victim will be selected, the gc process
> still waits for no_gc_sleep_time before waking up. The configuration
> of wait_ms is not reasonable.
> 
> After any of the victims have been selected, we need to reset wait_ms to
> default sleep time from no_gc_sleep_time.
> 
> Signed-off-by: Yuwei Guan <Yuwei.Guan@zeekrlife.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,


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