Messages in this thread | | | Subject | Re: [f2fs-dev] [PATCH v2] f2fs: add sysfs nodes to get GC info for each GC mode | From | Chao Yu <> | Date | Sat, 10 Jul 2021 08:17:02 +0800 |
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On 2021/7/10 4:44, Daeho Jeong wrote: > From: Daeho Jeong <daehojeong@google.com> > > Added gc_dirty_segs and gc_dirty_segs_mode sysfs nodes. > 1) "gc_dirty_segs" shows how many dirty segments have been > reclaimed by GC during a specific GC mode. > 2) "gc_dirty_segs_mode" is used to control for which gc mode > the "gc_dirty_segs" node shows. > > Signed-off-by: Daeho Jeong <daehojeong@google.com> > --- > Documentation/ABI/testing/sysfs-fs-f2fs | 14 +++++++++++++ > fs/f2fs/debug.c | 9 ++++++++ > fs/f2fs/f2fs.h | 5 +++++ > fs/f2fs/gc.c | 1 + > fs/f2fs/sysfs.c | 28 +++++++++++++++++++++++++ > 5 files changed, 57 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs > index 95155e4ec7fe..0d863eb185f6 100644 > --- a/Documentation/ABI/testing/sysfs-fs-f2fs > +++ b/Documentation/ABI/testing/sysfs-fs-f2fs > @@ -493,3 +493,17 @@ Contact: "Chao Yu" <yuchao0@huawei.com> > 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>/gc_dirty_segs
How about renaming gc_dirty_segs to gc_reclaimed_segments?
> +Date: July 2021 > +Contact: "Daeho Jeong" <daehojeong@google.com> > +Description: Show how many dirty segments have been reclaimed by GC during > + a specific GC mode (0: GC normal, 1: GC idle CB, 2: GC idle greedy, > + 3: gc idle AT, 4: GC urgent high, 5: GC urgent low)
3. GC idle AT
> + You can re-initialize this value to "0". > + > +What: /sys/fs/f2fs/<disk>/gc_dirty_segs_mode
You know, F2FS_IOC_FLUSH_DEVICE/F2FS_IOC_RESIZE_FS needs to migrate all blocks of target segment to other place, no matter the segment has partially or fully valid blocks, so it looks 'gc_segment_mode' will be more appropriate?
Thanks,
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