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From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Linux-MM <linux-mm@kvack.org>, Nitin Gupta <ngupta@vflare.org>,
	Jerome Marchand <jmarchan@redhat.com>,
	Ganesh Mahendran <opensource.ganesh@gmail.com>
Subject: Re: [PATCH v1 2/2] zram: remove init_lock in zram_make_request
Date: Tue, 3 Feb 2015 12:56:28 +0900	[thread overview]
Message-ID: <20150203035628.GB454@swordfish> (raw)
In-Reply-To: <20150203030235.GB1541@blaptop>

On (02/03/15 12:02), Minchan Kim wrote:
> On Tue, Feb 03, 2015 at 10:54:33AM +0900, Sergey Senozhatsky wrote:
> > On (02/02/15 16:06), Sergey Senozhatsky wrote:
> > > So, guys, how about doing it differently, in less lines of code,
> > > hopefully. Don't move reset_store()'s work to zram_reset_device().
> > > Instead, move
> > > 
> > > 	set_capacity(zram->disk, 0);
> > > 	revalidate_disk(zram->disk);
> > > 
> > > out from zram_reset_device() to reset_store(). this two function are
> > > executed only when called from reset_store() anyway. this also will let
> > > us drop `bool reset capacity' param from zram_reset_device().
> > > 
> > > 
> > > so we will do in reset_store()
> > > 
> > > 	mutex_lock(bdev->bd_mutex);
> > > 
> > > 	fsync_bdev(bdev);
> > > 	zram_reset_device(zram);
> > > 	set_capacity(zram->disk, 0);
> > > 
> > > 	mutex_unlock(&bdev->bd_mutex);
> > > 
> > > 	revalidate_disk(zram->disk);
> > > 	bdput(bdev);
> > > 
> > > 
> > > 
> > > and change zram_reset_device(zram, false) call to simply zram_reset_device(zram)
> > > in __exit zram_exit(void).
> > > 
> > 
> > Hello,
> > 
> > Minchan, Ganesh, I sent a patch last night, with the above solution.
> > looks ok to you?
> 
> Just I sent a feedback.
> 

thanks.
yeah, !FMODE_EXCL mode.

how do you want to handle it -- you want to send a separate patch or
you want me to send incremental one-liner and ask Andrew to squash them?

	-ss

> > 
> > Minchan, I think I'll send my small struct zram clean-up patch after
> > your init_lock patch. what's your opinion?
> 
> Good for me.
> 
> Thanks.
> -- 
> Kind regards,
> Minchan Kim
> 

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WARNING: multiple messages have this Message-ID (diff)
From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Linux-MM <linux-mm@kvack.org>, Nitin Gupta <ngupta@vflare.org>,
	Jerome Marchand <jmarchan@redhat.com>,
	Ganesh Mahendran <opensource.ganesh@gmail.com>
Subject: Re: [PATCH v1 2/2] zram: remove init_lock in zram_make_request
Date: Tue, 3 Feb 2015 12:56:28 +0900	[thread overview]
Message-ID: <20150203035628.GB454@swordfish> (raw)
In-Reply-To: <20150203030235.GB1541@blaptop>

On (02/03/15 12:02), Minchan Kim wrote:
> On Tue, Feb 03, 2015 at 10:54:33AM +0900, Sergey Senozhatsky wrote:
> > On (02/02/15 16:06), Sergey Senozhatsky wrote:
> > > So, guys, how about doing it differently, in less lines of code,
> > > hopefully. Don't move reset_store()'s work to zram_reset_device().
> > > Instead, move
> > > 
> > > 	set_capacity(zram->disk, 0);
> > > 	revalidate_disk(zram->disk);
> > > 
> > > out from zram_reset_device() to reset_store(). this two function are
> > > executed only when called from reset_store() anyway. this also will let
> > > us drop `bool reset capacity' param from zram_reset_device().
> > > 
> > > 
> > > so we will do in reset_store()
> > > 
> > > 	mutex_lock(bdev->bd_mutex);
> > > 
> > > 	fsync_bdev(bdev);
> > > 	zram_reset_device(zram);
> > > 	set_capacity(zram->disk, 0);
> > > 
> > > 	mutex_unlock(&bdev->bd_mutex);
> > > 
> > > 	revalidate_disk(zram->disk);
> > > 	bdput(bdev);
> > > 
> > > 
> > > 
> > > and change zram_reset_device(zram, false) call to simply zram_reset_device(zram)
> > > in __exit zram_exit(void).
> > > 
> > 
> > Hello,
> > 
> > Minchan, Ganesh, I sent a patch last night, with the above solution.
> > looks ok to you?
> 
> Just I sent a feedback.
> 

thanks.
yeah, !FMODE_EXCL mode.

how do you want to handle it -- you want to send a separate patch or
you want me to send incremental one-liner and ask Andrew to squash them?

	-ss

> > 
> > Minchan, I think I'll send my small struct zram clean-up patch after
> > your init_lock patch. what's your opinion?
> 
> Good for me.
> 
> Thanks.
> -- 
> Kind regards,
> Minchan Kim
> 

  reply	other threads:[~2015-02-03  3:56 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-02  3:41 [PATCH v1 2/2] zram: remove init_lock in zram_make_request Minchan Kim
2015-02-02  3:41 ` Minchan Kim
2015-02-02  5:59 ` Sergey Senozhatsky
2015-02-02  5:59   ` Sergey Senozhatsky
2015-02-02  6:18   ` Minchan Kim
2015-02-02  6:18     ` Minchan Kim
2015-02-02  7:06     ` Sergey Senozhatsky
2015-02-02  7:06       ` Sergey Senozhatsky
2015-02-03  1:54       ` Sergey Senozhatsky
2015-02-03  1:54         ` Sergey Senozhatsky
2015-02-03  3:02         ` Minchan Kim
2015-02-03  3:02           ` Minchan Kim
2015-02-03  3:56           ` Sergey Senozhatsky [this message]
2015-02-03  3:56             ` Sergey Senozhatsky
  -- strict thread matches above, loose matches on Subject: below --
2015-01-28  8:15 [PATCH 1/2] zram: free meta table in zram_meta_free Minchan Kim
2015-01-28  8:15 ` [PATCH v1 2/2] zram: remove init_lock in zram_make_request Minchan Kim
2015-01-28 14:56   ` Sergey Senozhatsky
2015-01-28 14:56     ` Sergey Senozhatsky
2015-01-28 15:04     ` Sergey Senozhatsky
2015-01-28 15:04       ` Sergey Senozhatsky
2015-01-28 23:33     ` Minchan Kim
2015-01-28 23:33       ` Minchan Kim
2015-01-29  1:57       ` Sergey Senozhatsky
2015-01-29  2:01         ` Minchan Kim
2015-01-29  2:01           ` Minchan Kim
2015-01-29  2:22           ` Sergey Senozhatsky
2015-01-29  2:22             ` Sergey Senozhatsky
2015-01-29  5:28             ` Minchan Kim
2015-01-29  5:28               ` Minchan Kim
2015-01-29  6:06               ` Sergey Senozhatsky
2015-01-29  6:06                 ` Sergey Senozhatsky
2015-01-29  6:35                 ` Minchan Kim
2015-01-29  6:35                   ` Minchan Kim
2015-01-29  7:08                   ` Sergey Senozhatsky
2015-01-29  7:08                     ` Sergey Senozhatsky
2015-01-30 14:41                     ` Minchan Kim
2015-01-30 14:41                       ` Minchan Kim
2015-01-31 11:31                       ` Sergey Senozhatsky
2015-01-31 11:31                         ` Sergey Senozhatsky
2015-02-01 14:50                       ` Sergey Senozhatsky
2015-02-01 14:50                         ` Sergey Senozhatsky
2015-02-01 15:04                         ` Sergey Senozhatsky
2015-02-01 15:04                           ` Sergey Senozhatsky
2015-02-02  1:43                           ` Minchan Kim
2015-02-02  1:43                             ` Minchan Kim
2015-02-02  1:59                             ` Sergey Senozhatsky
2015-02-02  1:59                               ` Sergey Senozhatsky
2015-02-02  2:45                               ` Minchan Kim
2015-02-02  2:45                                 ` Minchan Kim
2015-02-02  3:47                                 ` Sergey Senozhatsky
2015-02-02  3:47                                   ` Sergey Senozhatsky
2015-02-02  1:30                         ` Minchan Kim
2015-02-02  1:30                           ` Minchan Kim
2015-02-02  1:48                           ` Sergey Senozhatsky
2015-02-02  1:48                             ` Sergey Senozhatsky
2015-02-02  2:44                             ` Minchan Kim
2015-02-02  2:44                               ` Minchan Kim
2015-02-02  4:01                               ` Sergey Senozhatsky
2015-02-02  4:01                                 ` Sergey Senozhatsky
2015-02-02  4:28                                 ` Minchan Kim
2015-02-02  4:28                                   ` Minchan Kim
2015-02-02  5:09                                   ` Sergey Senozhatsky
2015-02-02  5:09                                     ` Sergey Senozhatsky
2015-02-02  5:18                                     ` Minchan Kim
2015-02-02  5:18                                       ` Minchan Kim
2015-02-02  5:28                                       ` Sergey Senozhatsky
2015-02-02  5:28                                         ` Sergey Senozhatsky
2015-02-02  5:10                                   ` Minchan Kim
2015-02-02  5:10                                     ` Minchan Kim
2015-01-30  0:20                   ` Sergey Senozhatsky
2015-01-29 13:48   ` Ganesh Mahendran
2015-01-29 13:48     ` Ganesh Mahendran
2015-01-29 15:12     ` Sergey Senozhatsky
2015-01-29 15:12       ` Sergey Senozhatsky
2015-01-30  7:52       ` Ganesh Mahendran
2015-01-30  7:52         ` Ganesh Mahendran
2015-01-30  8:08         ` Sergey Senozhatsky
2015-01-30  8:08           ` Sergey Senozhatsky
2015-01-31  8:50           ` Ganesh Mahendran
2015-01-31  8:50             ` Ganesh Mahendran
2015-01-31 11:07             ` Sergey Senozhatsky
2015-01-31 11:07               ` Sergey Senozhatsky
2015-01-31 12:59               ` Ganesh Mahendran
2015-01-31 12:59                 ` Ganesh Mahendran

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