Quoting Michal Hocko (2019-05-22 07:34:42)
> On Wed 22-05-19 06:06:31, Tetsuo Handa wrote:
> [...]
> > Since OOM notifier will be called after shrinkers are attempted,
> > can i915 move from OOM notifier to shrinker?
>
> That would be indeed preferable. OOM notifier is an API from hell.
We were^W
On Tue, May 21, 2019 at 11:06 PM Tetsuo Handa
wrote:
>
> On 2019/05/21 23:44, Daniel Vetter wrote:
> OOM notifiers should not depend on any locks or sleepable conditionals.
> If some lock directly or indirectly depended on __GFP_DIRECT_RECLAIM,
> it will deadlock. Thus, despite bloc
On Tue, May 21, 2019 at 12:46:38PM +0200, Michal Hocko wrote:
> On Tue 21-05-19 12:06:11, Daniel Vetter wrote:
> > In some special cases we must not block, but there's not a
> > spinlock, preempt-off, irqs-off or similar critical section already
> > that arms the might_sleep() debug checks. Add a n
In some special cases we must not block, but there's not a
spinlock, preempt-off, irqs-off or similar critical section already
that arms the might_sleep() debug checks. Add a non_block_start/end()
pair to annotate these.
This will be used in the oom paths of mmu-notifiers, where blocking is
not al
On Tue 21-05-19 14:43:38, Cristopher Lameter wrote:
> On Tue, 21 May 2019, Daniel Vetter wrote:
>
> > In some special cases we must not block, but there's not a
> > spinlock, preempt-off, irqs-off or similar critical section already
> > that arms the might_sleep() debug checks. Add a non_block_sta
On Tue, 21 May 2019, Daniel Vetter wrote:
> In some special cases we must not block, but there's not a
> spinlock, preempt-off, irqs-off or similar critical section already
> that arms the might_sleep() debug checks. Add a non_block_start/end()
> pair to annotate these.
Just putting preempt on/of
On Tue, May 21, 2019 at 08:24:53PM +0900, Tetsuo Handa wrote:
> On 2019/05/21 20:11, Michal Hocko wrote:
> > On Tue 21-05-19 20:04:34, Tetsuo Handa wrote:
> >> On 2019/05/21 19:51, Michal Hocko wrote:
> >>> On Tue 21-05-19 19:44:01, Tetsuo Handa wrote:
> On 2019/05/21 19:06, Daniel Vetter wrot
On Tue 21-05-19 12:06:11, Daniel Vetter wrote:
> In some special cases we must not block, but there's not a
> spinlock, preempt-off, irqs-off or similar critical section already
> that arms the might_sleep() debug checks. Add a non_block_start/end()
> pair to annotate these.
>
> This will be used
In some special cases we must not block, but there's not a
spinlock, preempt-off, irqs-off or similar critical section already
that arms the might_sleep() debug checks. Add a non_block_start/end()
pair to annotate these.
This will be used in the oom paths of mmu-notifiers, where blocking is
not al
