Commit a7e679b5 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: show mounted time 



Let's show mounted time.

Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent c6d5789b

Documentation/ABI/testing/sysfs-fs-f2fs

+5 −0
Original line number Diff line number Diff line
@@ -318,3 +318,8 @@ Date: September 2019 
Contact:	"Hridya Valsaraju" <hridya@google.com>

Description:	Average number of valid blocks.

		Available when CONFIG_F2FS_STAT_FS=y.



What:		/sys/fs/f2fs/<disk>/mounted_time_sec

Date:		February 2020

Contact:	"Jaegeuk Kim" <jaegeuk@kernel.org>

Description:	Show the mounted time in secs of this partition.

fs/f2fs/debug.c

+3 −0
Original line number Diff line number Diff line
@@ -301,6 +301,9 @@ static int stat_show(struct seq_file *s, void *v) 
			   si->ssa_area_segs, si->main_area_segs);

		seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",

			   si->overp_segs, si->rsvd_segs);

		seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",

					ktime_get_boottime_seconds(),

					SIT_I(si->sbi)->mounted_time);

		if (test_opt(si->sbi, DISCARD))

			seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",

				si->utilization, si->valid_count, si->discard_blks);

fs/f2fs/segment.c

+1 −1
Original line number Diff line number Diff line
@@ -4071,7 +4071,7 @@ static int build_sit_info(struct f2fs_sb_info *sbi) 
	sit_i->dirty_sentries = 0;

	sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK;

	sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time);

	sit_i->mounted_time = ktime_get_real_seconds();

	sit_i->mounted_time = ktime_get_boottime_seconds();

	init_rwsem(&sit_i->sentry_lock);

	return 0;

}

fs/f2fs/segment.h

+1 −1
Original line number Diff line number Diff line
@@ -756,7 +756,7 @@ static inline unsigned long long get_mtime(struct f2fs_sb_info *sbi, 
						bool base_time)

{

	struct sit_info *sit_i = SIT_I(sbi);

	time64_t diff, now = ktime_get_real_seconds();

	time64_t diff, now = ktime_get_boottime_seconds();



	if (now >= sit_i->mounted_time)

		return sit_i->elapsed_time + now - sit_i->mounted_time;

fs/f2fs/sysfs.c

+8 −0
Original line number Diff line number Diff line
@@ -185,6 +185,12 @@ static ssize_t encoding_show(struct f2fs_attr *a, 
	return sprintf(buf, "(none)");

}



static ssize_t mounted_time_sec_show(struct f2fs_attr *a,

		struct f2fs_sb_info *sbi, char *buf)

{

	return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time);

}



#ifdef CONFIG_F2FS_STAT_FS

static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,

				struct f2fs_sb_info *sbi, char *buf)
@@ -544,6 +550,7 @@ F2FS_GENERAL_RO_ATTR(features); 
F2FS_GENERAL_RO_ATTR(current_reserved_blocks);

F2FS_GENERAL_RO_ATTR(unusable);

F2FS_GENERAL_RO_ATTR(encoding);

F2FS_GENERAL_RO_ATTR(mounted_time_sec);

#ifdef CONFIG_F2FS_STAT_FS

F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);

F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
@@ -621,6 +628,7 @@ static struct attribute *f2fs_attrs[] = { 
	ATTR_LIST(reserved_blocks),

	ATTR_LIST(current_reserved_blocks),

	ATTR_LIST(encoding),

	ATTR_LIST(mounted_time_sec),

#ifdef CONFIG_F2FS_STAT_FS

	ATTR_LIST(cp_foreground_calls),

	ATTR_LIST(cp_background_calls),