On Thu, Mar 09, 2017 at 11:16:21AM +0100, Jan Kara wrote:
> SCSI can call device_add_disk() several times for one request queue when
> a device in unbound and bound, creating new gendisk each time. This will
> lead to bdi being repeatedly registered and unregistered. This was not a
> big problem
SCSI can call device_add_disk() several times for one request queue when
a device in unbound and bound, creating new gendisk each time. This will
lead to bdi being repeatedly registered and unregistered. This was not a
big problem until commit 165a5e22fafb "block: Move bdi_unregister() to
On Wed 08-03-17 17:55:42, Tejun Heo wrote:
> Hello,
>
> On Wed, Mar 08, 2017 at 05:48:31PM +0100, Jan Kara wrote:
> > @@ -710,6 +710,11 @@ static void cgwb_bdi_destroy(struct backing_dev_info
> > *bdi)
> > */
> > atomic_dec(>usage_cnt);
> > wait_event(cgwb_release_wait,
On Wed, 2017-03-08 at 17:55 -0500, Tejun Heo wrote:
> Hello,
>
> On Wed, Mar 08, 2017 at 05:48:31PM +0100, Jan Kara wrote:
> > @@ -710,6 +710,11 @@ static void cgwb_bdi_destroy(struct
> > backing_dev_info *bdi)
> > */
> > atomic_dec(>usage_cnt);
> > wait_event(cgwb_release_wait,
Hello,
On Wed, Mar 08, 2017 at 05:48:31PM +0100, Jan Kara wrote:
> @@ -710,6 +710,11 @@ static void cgwb_bdi_destroy(struct backing_dev_info
> *bdi)
>*/
> atomic_dec(>usage_cnt);
> wait_event(cgwb_release_wait, !atomic_read(>usage_cnt));
> + /*
> + * Grab back our
SCSI can call device_add_disk() several times for one request queue when
a device in unbound and bound, creating new gendisk each time. This will
lead to bdi being repeatedly registered and unregistered. This was not a
big problem until commit 165a5e22fafb "block: Move bdi_unregister() to
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