RE: [f2fs-dev] [PATCH 3/5] f2fs: format segment_info's show for better legibility

[Chao Yu <chao2.yu@samsung.com>]

Hi Gu,

> -----Original Message-----
> From: Gu Zheng [mailto:guz.fnst@cn.fujitsu.com]
> Sent: Thursday, March 13, 2014 5:58 PM
> To: Chao Yu
> Cc: 'Kim'; 'linux-kernel'; 'f2fs'
> Subject: Re: [f2fs-dev] [PATCH 3/5] f2fs: format segment_info's show for better legibility
> 
> Hi,
> On 03/13/2014 05:13 PM, Chao Yu wrote:
> 
> > Hi Gu,
> >
> >> -----Original Message-----
> >> From: Gu Zheng [mailto:guz.fnst@cn.fujitsu.com]
> >> Sent: Friday, March 07, 2014 6:44 PM
> >> To: Kim
> >> Cc: linux-kernel; f2fs
> >> Subject: [f2fs-dev] [PATCH 3/5] f2fs: format segment_info's show for better legibility
> >>
> >> The original segment_info's show is a bit out-of-format:
> >>
> >> [root@guz Demoes]# cat /proc/fs/f2fs/loop0/segment_info
> >> 0 0 0 0 0 0 0 0 0 0 0
> >> 0 0 0 0 0 0 0 0 0 0
> >> 0 0 0 0 0 0 0 0 0 0
> >> ......
> >> 0 0 0 0 0 0 0 0 0 0
> >> 0 0 1 0 0 1 [root@guz Demoes]#
> >>
> >> so we fix it here for better legibility.
> >> [root@guz Demoes]# cat /proc/fs/f2fs/loop0/segment_info
> >> 0 0 0 0 0 0 0 0 0 0
> >> 0 0 0 0 0 0 0 0 0 0
> >> 0 0 0 0 0 0 0 0 0 0
> >> ......
> >> 0 0 0 0 0 0 0 0 0 0
> >> 0 0 1 0 0 1
> >> [root@guz Demoes]#
> >
> > Here is one case, this looks not legible.
> >
> > 0 0 0 0 0 0 0 0 0 0
> > 1 0 0 0 0 0 0 0 0 0
> > 0 0 0 0 0 0 0 0 0 0
> > 0 0 0 0 0 0 0 0 0 0
> > 0 0 0 0 0 0 0 0 0 0
> > 0 0 0 0 0 0 509 512 512 512
> > 512 512 512 512 512 512 512 512 512 512
> > 512 512 512 512 331 278 0 0 0 0
> > 0 0 0 0 0 0 0 0 0 0
> > 0 0 0 0 0 0 0 512 512 512
> > 512 512 512 512 512 512 512 512 512 512
> > 0 512 512 512 512 512 512 1 0 512
> >
> > So how about modifying code as following?
> 
> >
> >>
> >> Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
> >
> > Reviewed-by: Chao Yu <chao2.yu@samsung.com>
> >
> >> ---
> >>  fs/f2fs/super.c |    7 ++++---
> >>  1 files changed, 4 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> >> index 72df734..6e4851c 100644
> >> --- a/fs/f2fs/super.c
> >> +++ b/fs/f2fs/super.c
> >> @@ -546,11 +546,12 @@ static int segment_info_seq_show(struct seq_file *seq, void *offset)
> >>
> >>  	for (i = 0; i < total_segs; i++) {
> >>  		seq_printf(seq, "%u", get_valid_blocks(sbi, i, 1));
> >
> > 		seq_printf(seq, "%-3u ", get_valid_blocks(sbi, i, 1));
> 
> Hmm, this patch has been applied to f2fs-dev tree, so maybe you can send a
> patch to enhance it directly!:)

Alright, I will send another patch to fix it. :)
Thanks.

> 
> Regards,
> Gu
> 
> >
> >> -		if (i != 0 && (i % 10) == 0)
> >> -			seq_puts(seq, "\n");
> >> +		if ((i % 10) == 9 || i == (total_segs - 1))
> >> +			seq_putc(seq, '\n');
> >>  		else
> >> -			seq_puts(seq, " ");
> >> +			seq_putc(seq, ' ');
> >>  	}
> >> +
> >>  	return 0;
> >>  }
> >>
> >> --
> >> 1.7.7
> >>
> >>
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> >