f2fs: export migration_granularity sysfs entry (34655575) · Commits · 戴 / test

Documentation/ABI/testing/sysfs-fs-f2fs

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -92,6 +92,15 @@ Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
	Description:		Description:
	Controls the number of trials to find a victim segment.		Controls the number of trials to find a victim segment.

			What: /sys/fs/f2fs/<disk>/migration_granularity
			Date: October 2018
			Contact: "Chao Yu" <yuchao0@huawei.com>
			Description:
			Controls migration granularity of garbage collection on large
			section, it can let GC move partial segment{s} of one section
			in one GC cycle, so that dispersing heavy overhead GC to
			multiple lightweight one.

	What: /sys/fs/f2fs/<disk>/dir_level		What: /sys/fs/f2fs/<disk>/dir_level
	Date: March 2014		Date: March 2014
	Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>		Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>

fs/f2fs/sysfs.c

+7 −0

Original line number	Original line	Diff line number	Diff line
	@@ -246,6 +246,11 @@ out:
	return count;		return count;
	}		}

			if (!strcmp(a->attr.name, "migration_granularity")) {
			if (t == 0 \|\| t > sbi->segs_per_sec)
			return -EINVAL;
			}

	if (!strcmp(a->attr.name, "trim_sections"))		if (!strcmp(a->attr.name, "trim_sections"))
	return -EINVAL;		return -EINVAL;

	@@ -406,6 +411,7 @@ F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
	F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);		F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
	F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);		F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
	F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);		F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
			F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
	F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);		F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
	F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);		F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
	F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);		F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
	@@ -460,6 +466,7 @@ static struct attribute *f2fs_attrs[] = {
	ATTR_LIST(min_hot_blocks),		ATTR_LIST(min_hot_blocks),
	ATTR_LIST(min_ssr_sections),		ATTR_LIST(min_ssr_sections),
	ATTR_LIST(max_victim_search),		ATTR_LIST(max_victim_search),
			ATTR_LIST(migration_granularity),
	ATTR_LIST(dir_level),		ATTR_LIST(dir_level),
	ATTR_LIST(ram_thresh),		ATTR_LIST(ram_thresh),
	ATTR_LIST(ra_nid_pages),		ATTR_LIST(ra_nid_pages),

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