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>,
"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>,
sergey.senozhatsky.work@gmail.com
Subject: Re: [PATCH v1 2/2] zram: remove init_lock in zram_make_request
Date: Thu, 29 Jan 2015 11:22:41 +0900 [thread overview]
Message-ID: <20150129022241.GA2555@swordfish> (raw)
In-Reply-To: <20150129020139.GB9672@blaptop>
On (01/29/15 11:01), Minchan Kim wrote:
> On Thu, Jan 29, 2015 at 10:57:38AM +0900, Sergey Senozhatsky wrote:
> > On Thu, Jan 29, 2015 at 8:33 AM, Minchan Kim <minchan@kernel.org> wrote:
> > > On Wed, Jan 28, 2015 at 11:56:51PM +0900, Sergey Senozhatsky wrote:
> > > > I don't like re-introduced ->init_done.
> > > > another idea... how about using `zram->disksize == 0' instead of
> > > > `->init_done' (previously `->meta != NULL')? should do the trick.
> > >
> > > It could be.
> > >
> > >
> > care to change it?
>
> Will try!
>
> If it was your concern, I'm happy to remove the check.(ie, actually,
> I realized that after I push the button to send). Thanks!
>
Thanks a lot, Minchan.
and, guys, sorry for previous html email (I'm sure I toggled the "plain
text" mode in gmail web-interface, but somehow it has different meaning
in gmail world).
I'm still concerned about performance numbers that I see on my x86_64.
it's not always, but mostly slower. I'll give it another try (disable
lockdep, etc.), but if we lose 10% on average then, sorry, I'm not so
positive about srcu change and will tend to vote for your initial commit
that simply moved meta free() out of init_lock and left locking as is
(lockdep warning would have been helpful there, because otherwise it
just looked like we change code w/o any reason).
what do you thunk?
-ss
next prev parent reply other threads:[~2015-01-29 2:22 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1422432945-6764-1-git-send-email-minchan@kernel.org>
2015-01-28 14:19 ` [PATCH 1/2] zram: free meta table in zram_meta_free Sergey Senozhatsky
2015-01-28 23:17 ` Minchan Kim
2015-01-29 1:49 ` Ganesh Mahendran
[not found] ` <1422432945-6764-2-git-send-email-minchan@kernel.org>
2015-01-28 14:56 ` [PATCH v1 2/2] zram: remove init_lock in zram_make_request Sergey Senozhatsky
2015-01-28 15:04 ` Sergey Senozhatsky
2015-01-28 23:33 ` Minchan Kim
[not found] ` <CAHqPoqKZFDSjO1pL+ixYe_m_L0nGNcu04qSNp-jd1fUixKtHnw@mail.gmail.com>
2015-01-29 2:01 ` Minchan Kim
2015-01-29 2:22 ` Sergey Senozhatsky [this message]
2015-01-29 5:28 ` Minchan Kim
2015-01-29 6:06 ` Sergey Senozhatsky
2015-01-29 6:35 ` Minchan Kim
2015-01-29 7:08 ` Sergey Senozhatsky
2015-01-30 14:41 ` Minchan Kim
2015-01-31 11:31 ` Sergey Senozhatsky
2015-02-01 14:50 ` Sergey Senozhatsky
2015-02-01 15:04 ` Sergey Senozhatsky
2015-02-02 1:43 ` Minchan Kim
2015-02-02 1:59 ` Sergey Senozhatsky
2015-02-02 2:45 ` Minchan Kim
2015-02-02 3:47 ` Sergey Senozhatsky
2015-02-02 1:30 ` Minchan Kim
2015-02-02 1:48 ` Sergey Senozhatsky
2015-02-02 2:44 ` Minchan Kim
2015-02-02 4:01 ` Sergey Senozhatsky
2015-02-02 4:28 ` Minchan Kim
2015-02-02 5:09 ` Sergey Senozhatsky
2015-02-02 5:18 ` Minchan Kim
2015-02-02 5:28 ` Sergey Senozhatsky
2015-02-02 5:10 ` Minchan Kim
2015-01-30 0:20 ` Sergey Senozhatsky
2015-01-29 13:48 ` Ganesh Mahendran
2015-01-29 15:12 ` Sergey Senozhatsky
2015-01-30 7:52 ` Ganesh Mahendran
2015-01-30 8:08 ` Sergey Senozhatsky
2015-01-31 8:50 ` Ganesh Mahendran
2015-01-31 11:07 ` Sergey Senozhatsky
2015-01-31 12:59 ` Ganesh Mahendran
2015-02-02 3:41 Minchan Kim
2015-02-02 5:59 ` Sergey Senozhatsky
2015-02-02 6:18 ` Minchan Kim
2015-02-02 7:06 ` Sergey Senozhatsky
2015-02-03 1:54 ` Sergey Senozhatsky
2015-02-03 3:02 ` Minchan Kim
2015-02-03 3:56 ` Sergey Senozhatsky
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