From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Takashi Iwai <tiwai@suse.de>, Hyeoncheol Lee <cheol.lee@lge.com>,
yjay.kim@lge.com, Sangseok Lee <sangseok.lee@lge.com>,
Hugh Dickins <hughd@google.com>,
"[4.7+]" <stable@vger.kernel.org>
Subject: Re: [PATCH v4 2/3] zram: revalidate disk under init_lock
Date: Thu, 22 Dec 2016 10:32:23 +0900 [thread overview]
Message-ID: <20161222013223.GD644@jagdpanzerIV.localdomain> (raw)
In-Reply-To: <1482366980-3782-3-git-send-email-minchan@kernel.org>
On (12/22/16 09:36), Minchan Kim wrote:
> [1] moved revalidate_disk call out of init_lock to avoid lockdep
> false-positive splat. However, [2] remove init_lock in IO path
> so there is no worry about lockdep splat. So, let's restore it.
> This patch need to set BDI_CAP_STABLE_WRITES atomically in
> next patch.
>
> [1] b4c5c60920e3: zram: avoid lockdep splat by revalidate_disk
> [2] 08eee69fcf6b: zram: remove init_lock in zram_make_request
>
> Fixes: da9556a2367c ("zram: user per-cpu compression streams")
> Cc: <stable@vger.kernel.org> [4.7+]
> Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
-ss
next prev parent reply other threads:[~2016-12-22 1:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-22 0:36 [PATCH v4 0/3] Fix zsmalloc crash problem Minchan Kim
2016-12-22 0:36 ` [PATCH v4 1/3] mm: support anonymous stable page Minchan Kim
2016-12-22 0:36 ` [PATCH v4 2/3] zram: revalidate disk under init_lock Minchan Kim
2016-12-22 1:32 ` Sergey Senozhatsky [this message]
2016-12-22 0:36 ` [PATCH v4 3/3] zram: support BDI_CAP_STABLE_WRITES Minchan Kim
2016-12-22 1:31 ` Sergey Senozhatsky
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