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f2fs: change default schedule timeout value

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This patch changes default schedule timeout value from 20ms to 1ms,
in order to give caller more chances to check whether IO or non-IO
congestion condition has already been mitigable.

In addition, default interval of periodical discard submission is
kept to 20ms.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2025-11-12 09:47:49 +08:00 committed by Jaegeuk Kim
parent 76e780d88c
commit d31e0de8b8
2 changed files with 5 additions and 3 deletions
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6
fs/f2fs/f2fs.h
View File

@ -407,6 +407,8 @@ struct discard_entry {
#define DEFAULT_DISCARD_GRANULARITY 16
/* default maximum discard granularity of ordered discard, unit: block count */
#define DEFAULT_MAX_ORDERED_DISCARD_GRANULARITY 16
/* default interval of periodical discard submission */
#define DEFAULT_DISCARD_INTERVAL (msecs_to_jiffies(20))
/* max discard pend list number */
#define MAX_PLIST_NUM 512
@ -656,8 +658,8 @@ enum {
#define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO or flush count */
/* IO/non-IO congestion wait timeout value, default: 20ms */
#define DEFAULT_SCHEDULE_TIMEOUT (msecs_to_jiffies(20))
/* IO/non-IO congestion wait timeout value, default: 1ms */
#define DEFAULT_SCHEDULE_TIMEOUT (msecs_to_jiffies(1))
/* timeout value injected, default: 1000ms */
#define DEFAULT_FAULT_TIMEOUT (msecs_to_jiffies(1000))

2
fs/f2fs/segment.c
View File

@ -3471,7 +3471,7 @@ static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
blk_finish_plug(&plug);
mutex_unlock(&dcc->cmd_lock);
trimmed += __wait_all_discard_cmd(sbi, NULL);
f2fs_schedule_timeout(DEFAULT_SCHEDULE_TIMEOUT);
f2fs_schedule_timeout(DEFAULT_DISCARD_INTERVAL);
goto next;
}
skip: