From: Luis Chamberlain <mcgrof@kernel.org>
To: Bart Van Assche <bvanassche@acm.org>
Cc: axboe@kernel.dk, viro@zeniv.linux.org.uk,
gregkh@linuxfoundation.org, rostedt@goodmis.org,
mingo@redhat.com, jack@suse.cz, ming.lei@redhat.com,
nstange@suse.de, akpm@linux-foundation.org, mhocko@suse.com,
yukuai3@huawei.com, linux-block@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Omar Sandoval <osandov@fb.com>,
Hannes Reinecke <hare@suse.com>, Michal Hocko <mhocko@kernel.org>
Subject: Re: [RFC v2 4/5] mm/swapfile: refcount block and queue before using blkcg_schedule_throttle()
Date: Fri, 10 Apr 2020 14:34:54 +0000 [thread overview]
Message-ID: <20200410143454.GL11244@42.do-not-panic.com> (raw)
In-Reply-To: <5001fb4f-28b8-26b1-fc66-11b3105b15b9@acm.org>
On Thu, Apr 09, 2020 at 08:02:59PM -0700, Bart Van Assche wrote:
> On 2020-04-09 14:45, Luis Chamberlain wrote:
> > if (si->bdev) {
> > + bdev = bdgrab(si->bdev);
> > + if (!bdev)
> > + continue;
> > + /*
> > + * By adding our own bdgrab() we ensure the queue
> > + * sticks around until disk_release(), and so we ensure
> > + * our release of the request_queue does not happen in
> > + * atomic context.
> > + */
> > blkcg_schedule_throttle(bdev_get_queue(si->bdev),
> > true);
>
> How about changing the si->bdev argument of blkcg_schedule_throttle()
> into bdev?
Sure, thanks!
Luis
next prev parent reply other threads:[~2020-04-10 14:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 21:45 [RFC v2 0/5] blktrace: fix use after free Luis Chamberlain
2020-04-09 21:45 ` [RFC v2 1/5] block: move main block debugfs initialization to its own file Luis Chamberlain
2020-04-10 2:48 ` Bart Van Assche
2020-04-09 21:45 ` [RFC v2 2/5] blktrace: fix debugfs use after free Luis Chamberlain
2020-04-10 2:52 ` Bart Van Assche
2020-04-10 19:58 ` Luis Chamberlain
2020-04-11 23:09 ` Bart Van Assche
2020-04-14 3:32 ` Luis Chamberlain
2020-04-09 21:45 ` [RFC v2 3/5] blktrace: ref count the request_queue during ioctl Luis Chamberlain
2020-04-10 2:58 ` Bart Van Assche
2020-04-09 21:45 ` [RFC v2 4/5] mm/swapfile: refcount block and queue before using blkcg_schedule_throttle() Luis Chamberlain
2020-04-10 3:02 ` Bart Van Assche
2020-04-10 14:34 ` Luis Chamberlain [this message]
2020-04-09 21:45 ` [RFC v2 5/5] block: revert back to synchronous request_queue removal Luis Chamberlain
2020-04-10 3:12 ` Bart Van Assche
2020-04-10 14:34 ` Luis Chamberlain
2020-04-10 20:50 ` Luis Chamberlain
2020-04-10 21:27 ` Luis Chamberlain
2020-04-11 23:21 ` Bart Van Assche
2020-04-14 3:38 ` Luis Chamberlain
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