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f2fs: define MIN_DISCARD_GRANULARITY macro

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Do cleanup in f2fs_tuning_parameters() and __init_discard_policy(),
let's use macro instead of number.

Suggested-by: Chao Yu <chao@kernel.org>
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 2022-11-24 00:44:01 +08:00 committed by Jaegeuk Kim
parent 48c08c51f9
commit 1cd2e6d544
3 changed files with 6 additions and 3 deletions
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2
fs/f2fs/f2fs.h
View file

@ -329,6 +329,8 @@ struct discard_entry {
unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
};
/* minimum discard granularity, unit: block count */
#define MIN_DISCARD_GRANULARITY 1
/* default discard granularity of inner discard thread, unit: block count */
#define DEFAULT_DISCARD_GRANULARITY 16
/* default maximum discard granularity of ordered discard, unit: block count */

4
fs/f2fs/segment.c
View file

@ -1065,7 +1065,7 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi,
dpolicy->sync = false;
dpolicy->ordered = true;
if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
dpolicy->granularity = 1;
dpolicy->granularity = MIN_DISCARD_GRANULARITY;
if (atomic_read(&dcc->discard_cmd_cnt))
dpolicy->max_interval =
dcc->min_discard_issue_time;
@ -1080,7 +1080,7 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi,
} else if (discard_type == DPOLICY_UMOUNT) {
dpolicy->io_aware = false;
/* we need to issue all to keep CP_TRIMMED_FLAG */
dpolicy->granularity = 1;
dpolicy->granularity = MIN_DISCARD_GRANULARITY;
dpolicy->timeout = true;
}
}

3
fs/f2fs/super.c
View file

@ -4080,7 +4080,8 @@ static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
/* adjust parameters according to the volume size */
if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) {
if (f2fs_block_unit_discard(sbi))
SM_I(sbi)->dcc_info->discard_granularity = 1;
SM_I(sbi)->dcc_info->discard_granularity =
MIN_DISCARD_GRANULARITY;
SM_I(sbi)->ipu_policy = 1 << F2FS_IPU_FORCE |
1 << F2FS_IPU_HONOR_OPU_WRITE;
}