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SubjectRe: [f2fs-dev] [PATCH] resize.f2fs: add option for large_nat_bitmap feature
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On 2020/1/10 17:58, xiong ping wrote:
> Chao Yu <yuchao0@huawei.com> 于2020年1月9日周四 下午3:16写道:
>>
>> On 2020/1/8 19:20, Ping1 Xiong 熊平 wrote:
>>> From d5b8411dbae37180c37d96bf164fab16138fc21a Mon Sep 17 00:00:00 2001
>>>
>>> From: xiongping1 <xiongping1@xiaomi.com>
>>> 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".

>> Thanks,
>>
>>>
>>> Signed-off-by: xiongping1 <xiongping1@xiaomi.com>
>>> ---
>>> 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;

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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>>
>>
>> _______________________________________________
>> Linux-f2fs-devel mailing list
>> Linux-f2fs-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
> .
>

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