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f2fs: introduce gc_urgent_mid mode

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We need a mid level of gc urgent mode to do GC forcibly in a period
of given gc_urgent_sleep_time, but not like using greedy GC approach
and switching to SSR mode such as gc urgent high mode. This can be
used for more aggressive periodic storage clean up.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Daeho Jeong
2022-03-15 21:14:14 -07:00
committed by Jaegeuk Kim
parent c2b5163766
commit f6011d1561
5 changed files with 28 additions and 7 deletions
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7
fs/f2fs/sysfs.c
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@@ -472,6 +472,13 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
}
} else if (t == 2) {
sbi->gc_mode = GC_URGENT_LOW;
} else if (t == 3) {
sbi->gc_mode = GC_URGENT_MID;
if (sbi->gc_thread) {
sbi->gc_thread->gc_wake = 1;
wake_up_interruptible_all(
&sbi->gc_thread->gc_wait_queue_head);
}
} else {
return -EINVAL;
}