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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Sherry Yang <sherryy@android.com>
Cc: linux-kernel@vger.kernel.org,
	"open list:ANDROID DRIVERS" <devel@driverdev.osuosl.org>,
	"Arve Hjønnevåg" <arve@android.com>,
	"Riley Andrews" <riandrews@android.com>,
	maco@google.com, tkjos@google.com
Subject: Re: [PATCH v2 1/4] android: binder: Don't get mm from task
Date: Sat, 21 Oct 2017 10:15:13 +0200	[thread overview]
Message-ID: <20171021081513.GA19354@kroah.com> (raw)
In-Reply-To: <20171021005902.59586-2-sherryy@android.com>

On Fri, Oct 20, 2017 at 08:58:58PM -0400, Sherry Yang wrote:
> Use binder_alloc struct's mm_struct rather than getting
> a reference to the mm struct through get_task_mm to
> avoid a potential deadlock between lru lock, task lock and
> dentry lock, since a thread can be holding the task lock
> and the dentry lock while trying to acquire the lru lock.
> 
> Acked-by: Arve Hjønnevåg <arve@android.com>
> Signed-off-by: Sherry Yang <sherryy@android.com>
> ---
>  drivers/android/binder_alloc.c | 22 +++++++++-------------
>  drivers/android/binder_alloc.h |  1 -
>  2 files changed, 9 insertions(+), 14 deletions(-)

I've applied these first 2 patches, but patches 3 and 4 I have already
applied to my char-misc-next tree, right?

thanks,

greg k-h

  reply	other threads:[~2017-10-21  8:15 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-21  0:58 [PATCH v2 0/4] android: binder: fixes for memory allocator change Sherry Yang
2017-10-21  0:58 ` [PATCH v2 1/4] android: binder: Don't get mm from task Sherry Yang
2017-10-21  8:15   ` Greg Kroah-Hartman [this message]
2017-10-23 18:18     ` Arve Hjønnevåg
2017-10-24  7:28       ` Greg Kroah-Hartman
2017-10-24 18:36         ` Arve Hjønnevåg
2017-10-25  7:11           ` Greg Kroah-Hartman
2017-10-21  0:58 ` [PATCH v2 2/4] android: binder: Fix null ptr dereference in debug msg Sherry Yang
2017-10-21  0:59 ` [PATCH v2 3/4] android: binder: Remove unused vma argument Sherry Yang
2017-10-21  0:59 ` [PATCH v2 4/4] android: binder: Change binder_shrinker to static Sherry Yang

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