From: liujinbao1 <liujinb...@xiaomi.com>
When we add "atgc" to the fstab table, ATGC is not immediately enabled.
There is a 7-day time threshold, and we can use "atgc_enabled" to
show whether ATGC is enabled.
Signed-off-by: liujinbao1 <liujinb...@xiaomi.com>
---
Documentation/ABI/testing/sysfs-fs-f2fs | 6 ++++++
fs/f2fs/sysfs.c | 8 ++++++++
2 files changed, 14 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs
b/Documentation/ABI/testing/sysfs-fs-f2fs
index 36c3cb547901..8597dfaef700 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -564,6 +564,12 @@ Description: When ATGC is on, it controls age
threshold to bypass GCing young
candidates whose age is not beyond the threshold, by default it
was
initialized as 604800 seconds (equals to 7 days).
+What: /sys/fs/f2fs/<disk>/atgc_enabled
+Date: Feb 2024
+Contact: "Jinbao Liu" <liujinb...@xiaomi.com>
+Description: It represents whether ATGC is on or off. The value is 1 which
+ indicates that ATGC is on, and 0 indicates that it is off.
+
What: /sys/fs/f2fs/<disk>/gc_reclaimed_segments
Date: July 2021
Contact: "Daeho Jeong" <daehoje...@google.com>
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 417fae96890f..0915872abd97 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -143,6 +143,12 @@ static ssize_t pending_discard_show(struct f2fs_attr *a,
&SM_I(sbi)->dcc_info->discard_cmd_cnt));
}
+static ssize_t atgc_enabled_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0);
+}
+
static ssize_t gc_mode_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
@@ -1017,6 +1023,7 @@ F2FS_GENERAL_RO_ATTR(encoding);
F2FS_GENERAL_RO_ATTR(mounted_time_sec);
F2FS_GENERAL_RO_ATTR(main_blkaddr);
F2FS_GENERAL_RO_ATTR(pending_discard);
+F2FS_GENERAL_RO_ATTR(atgc_enabled);
F2FS_GENERAL_RO_ATTR(gc_mode);
#ifdef CONFIG_F2FS_STAT_FS
F2FS_GENERAL_RO_ATTR(moved_blocks_background);
@@ -1144,6 +1151,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(atgc_candidate_count),
ATTR_LIST(atgc_age_weight),
ATTR_LIST(atgc_age_threshold),
+ ATTR_LIST(atgc_enabled),
ATTR_LIST(seq_file_ra_mul),
ATTR_LIST(gc_segment_mode),
ATTR_LIST(gc_reclaimed_segments),
--
2.25.1
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