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From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Nitin Gupta <ngupta@vflare.org>,
	linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: Re: [PATCH 6/6] zram: export new 'mm_stat' sysfs attrs
Date: Thu, 12 Mar 2015 10:54:11 +0900	[thread overview]
Message-ID: <20150312015411.GB948@swordfish> (raw)
In-Reply-To: <20150312014157.GF10820@blaptop>

On (03/12/15 10:41), Minchan Kim wrote:
> Any user doesn't take care of document. I think we should add
> pr_warn_once to notify the user if he tried deprecated interface.

yes, that was something I didn't want to include into this patch.
I agree that some sort of a warning should go into the logs. do
you want me to add pr_warn_once() to every _show() function?

having this in documentation will not do any harm, so let's keep it
there as well.

> In addition, we should add deprecated interface in Documentation/ABI/obsolete/
> 

didn't know about that. ok, will send "deprecate old attrs" patch that will
add deprecated attrs to Documentation/ABI/obsolete/ and add pr_warn_once().


> > 
> > Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
> > ---
> >  Documentation/ABI/testing/sysfs-block-zram |  8 ++++++++
> >  Documentation/blockdev/zram.txt            | 18 +++++++++++++++++
> >  drivers/block/zram/zram_drv.c              | 31 ++++++++++++++++++++++++++++++
> >  3 files changed, 57 insertions(+)
> > 
> > diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram
> > index a7f622f..8114c81 100644
> > --- a/Documentation/ABI/testing/sysfs-block-zram
> > +++ b/Documentation/ABI/testing/sysfs-block-zram
> > @@ -158,3 +158,11 @@ Description:
> >  		statistics not accounted by block layer. For example,
> >  		failed_reads, failed_writes, etc. File format is similar to
> >  		block layer statistics file format.
> > +
> > +What:		/sys/block/zram<id>/mm_stat
> > +Date:		August 2015
> > +Contact:	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
> > +Description:
> > +		The mm_stat file is read-only and accumulates device's mm
> > +		statistics (orig_data_size, compr_data_size, etc.) in a format
> 
> Every field in mm_stat doesn't mean accumulation.
> 

agree. bad wording. only num_migrated shows the accumulated number.
will send a trivial patch later.

	-ss

  reply	other threads:[~2015-03-12  1:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-10 15:08 [PATCH 0/6] new zram statistics reporting scheme Sergey Senozhatsky
2015-03-10 15:08 ` [PATCH 1/6] zram: remove `num_migrated' device attr Sergey Senozhatsky
2015-03-12  1:16   ` Minchan Kim
2015-03-12  1:22     ` Sergey Senozhatsky
2015-03-10 15:08 ` [PATCH 2/6] zram: move compact_store() to sysfs functions area Sergey Senozhatsky
2015-03-12  1:24   ` Minchan Kim
2015-03-10 15:08 ` [PATCH 3/6] zram: use generic start/end io accounting Sergey Senozhatsky
2015-03-12  1:25   ` Minchan Kim
2015-03-10 15:08 ` [PATCH 4/6] zram: describe device attrs in documentation Sergey Senozhatsky
2015-03-12  1:33   ` Minchan Kim
2015-03-12  1:47     ` Sergey Senozhatsky
2015-03-10 15:08 ` [PATCH 5/6] zram: export new 'io_stat' sysfs attrs Sergey Senozhatsky
2015-03-12  1:36   ` Minchan Kim
2015-03-10 15:08 ` [PATCH 6/6] zram: export new 'mm_stat' " Sergey Senozhatsky
2015-03-12  1:41   ` Minchan Kim
2015-03-12  1:54     ` Sergey Senozhatsky [this message]
2015-03-12  1:55 ` [PATCH 0/6] new zram statistics reporting scheme Minchan Kim
2015-03-12  2:16   ` Sergey Senozhatsky
2015-03-12  5:03     ` Sergey Senozhatsky
2015-03-12  5:11     ` Minchan Kim
2015-03-12  5:24       ` Sergey Senozhatsky

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