Re: [f2fs-dev] [PATCH] resize.f2fs: add option for large_nat_bitmap feature

From: xiong ping
Date: Mon Jan 13 2020 - 01:51:04 EST


Chao Yu <yuchao0@xxxxxxxxxx> ä2020å1æ11æåå äå5:43åéï
>
> On 2020/1/10 17:58, xiong ping wrote:
> > Chao Yu <yuchao0@xxxxxxxxxx> ä2020å1æ9æåå äå3:16åéï
> >>
> >> On 2020/1/8 19:20, Ping1 Xiong çå wrote:
> >>> From d5b8411dbae37180c37d96bf164fab16138fc21a Mon Sep 17 00:00:00 2001
> >>>
> >>> From: xiongping1 <xiongping1@xxxxxxxxxx>
> >>> Date: Wed, 8 Jan 2020 17:20:55 +0800
> >>> Subject: [PATCH] resize.f2fs: add option for large_nat_bitmap feature
> >>
> >> Thanks for your contribution.
> >>
> >> The patch format is incorrect, I guess it was changed by email client or when
> >> you paste patch's content, could you check it?
> >>
> > I have resend the patch with this email account yesterday, can you check it?
> >>>
> >>> resize.f2fs has already supported large_nat_bitmap feature, but has no
> >>> option to turn on it.
> >>>
> >>> This change add a new '-i' option to control turning on/off it.
> >>
> >> We only add a option to turn on this feature, right? rather than turning
> >> on or off it?
> >>
> > yes, the feature is off by default, so we need an option to enable it.
>
> So, I meant it needs to adjust commit message from "turning on/off it" to
> "turning on it".
>

ok, will fix it in patch v2.

> >> Thanks,
> >>
> >>>
> >>> Signed-off-by: xiongping1 <xiongping1@xxxxxxxxxx>
> >>> ---
> >>> fsck/main.c | 6 +++++-
> >>> fsck/resize.c | 5 +++++
> >>> 2 files changed, 10 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/fsck/main.c b/fsck/main.c
> >>> index 9a7d499..e7e3dfc 100644
> >>> --- a/fsck/main.c
> >>> +++ b/fsck/main.c
> >>> @@ -104,6 +104,7 @@ void resize_usage()
> >>> MSG(0, "\nUsage: resize.f2fs [options] device\n");
> >>> MSG(0, "[options]:\n");
> >>> MSG(0, " -d debug level [default:0]\n");
> >>> + MSG(0, " -i extended node bitmap, node ratio is 20%% by default\n");
> >>> MSG(0, " -s safe resize (Does not resize metadata)");
> >>> MSG(0, " -t target sectors [default: device size]\n");
> >>> MSG(0, " -V print the version number and exit\n");
> >>> @@ -449,7 +450,7 @@ void f2fs_parse_options(int argc, char *argv[])
> >>> break;
> >>> }
> >>> } else if (!strcmp("resize.f2fs", prog)) {
> >>> - const char *option_string = "d:st:V";
> >>> + const char *option_string = "d:st:iV";
> >>>
> >>> c.func = RESIZE;
> >>> while ((option = getopt(argc, argv, option_string)) != EOF) {
> >>> @@ -476,6 +477,9 @@ void f2fs_parse_options(int argc, char *argv[])
> >>> ret = sscanf(optarg, "%"PRIx64"",
> >>> &c.target_sectors);
> >>> break;
> >>> + case 'i':
> >>> + c.large_nat_bitmap = 1;
> >>> + break;
> >>> case 'V':
> >>> show_version(prog);
> >>> exit(0);
> >>> diff --git a/fsck/resize.c b/fsck/resize.c
> >>> index fc563f2..88e063e 100644
> >>> --- a/fsck/resize.c
> >>> +++ b/fsck/resize.c
> >>> @@ -519,6 +519,11 @@ static void rebuild_checkpoint(struct f2fs_sb_info *sbi,
> >>> else
> >>> set_cp(checksum_offset, CP_CHKSUM_OFFSET);
> >>>
> >>> + if (c.large_nat_bitmap) {
> >>> + set_cp(checksum_offset, CP_MIN_CHKSUM_OFFSET);
> >>> + flags |= CP_LARGE_NAT_BITMAP_FLAG;
> >>> + }
>
> How about relocating above codes to below position:
>
> flags = update_nat_bits_flags(new_sb, cp, get_cp(ckpt_flags));
>
> + if (c.large_nat_bitmap)
> + flags |= CP_LARGE_NAT_BITMAP_FLAG;
>

ok, will fix it in patch v2.

> if (flags & CP_COMPACT_SUM_FLAG)
> flags &= ~CP_COMPACT_SUM_FLAG;
>
> Thanks,
>
> >>> +
> >>> set_cp(ckpt_flags, flags);
> >>>
> >>> memcpy(new_cp, cp, (unsigned char *)cp->sit_nat_version_bitmap -
> >>> --
> >>> 2.7.4
> >>>
> >>>
> >>>
> >>>
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> >>
> >>
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> > .
> >