Re: [PATCH 1/6] lightnvm: pblk: check for failed mempool alloc.

[Jens Axboe]

On 09/06/2017 09:08 AM, Johannes Thumshirn wrote:
> On Wed, Sep 06, 2017 at 05:01:01PM +0200, Javier GonzÃlez wrote:
>> Check for failed mempool allocations and act accordingly.
> 
> Are you sure it is needed? Quoting from mempool_alloc()s Documentation:
> "[...] Note that due to preallocation, this function *never* fails when called
> from process contexts. (it might fail if called from an IRQ context.) [...]"

It's not needed, mempool() will never fail if __GFP_WAIT is set in the
mask. The use case here is GFP_KERNEL, which does include __GFP_WAIT.

-- 
Jens Axboe