unimore/kernel-hacking-2024-linux-steffo
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f2fs: fix gc mode when gc_urgent_high_remaining is 1

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Under the current logic, when gc_urgent_high_remaining is set to 1,
the mode will be switched to normal at the beginning, instead of
running in gc_urgent mode.

Let's switch the gc mode back to normal when the gc ends.

Fixes: 265576181b ("f2fs: remove gc_urgent_high_limited for cleanup")
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Yangtao Li 2022-10-25 14:50:24 +08:00 committed by Jaegeuk Kim
parent 3688cbe39b
commit 6359a1aaca
1 changed files with 9 additions and 10 deletions
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19
fs/f2fs/gc.c
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@ -96,16 +96,6 @@ static int gc_thread_func(void *data)
* invalidated soon after by user update or deletion.
* So, I'd like to wait some time to collect dirty segments.
*/
if (sbi->gc_mode == GC_URGENT_HIGH) {
spin_lock(&sbi->gc_urgent_high_lock);
if (sbi->gc_urgent_high_remaining) {
sbi->gc_urgent_high_remaining--;
if (!sbi->gc_urgent_high_remaining)
sbi->gc_mode = GC_NORMAL;
}
spin_unlock(&sbi->gc_urgent_high_lock);
}
if (sbi->gc_mode == GC_URGENT_HIGH ||
sbi->gc_mode == GC_URGENT_MID) {
wait_ms = gc_th->urgent_sleep_time;
@ -162,6 +152,15 @@ static int gc_thread_func(void *data)
/* balancing f2fs's metadata periodically */
f2fs_balance_fs_bg(sbi, true);
next:
if (sbi->gc_mode == GC_URGENT_HIGH) {
spin_lock(&sbi->gc_urgent_high_lock);
if (sbi->gc_urgent_high_remaining) {
sbi->gc_urgent_high_remaining--;
if (!sbi->gc_urgent_high_remaining)
sbi->gc_mode = GC_NORMAL;
}
spin_unlock(&sbi->gc_urgent_high_lock);
}
sb_end_write(sbi->sb);
} while (!kthread_should_stop());