[Drbd-dev] [patch 1/2] block, drbd: fix drbd_req_new() initialization

Jens Axboe axboe at fb.com
Sun Mar 8 01:33:55 CET 2015

On 03/07/2015 05:24 PM, David Rientjes wrote:
> mempool_alloc() does not support __GFP_ZERO since elements may come from
> memory that has already been released by mempool_free().
> Remove __GFP_ZERO from mempool_alloc() in drbd_req_new() and properly
> initialize it to 0.

You should add it to mempool instead, avoid having this issue show up 
for other folks as well. It'd be trivial to do. Normal ->alloc() should 
honor __GFP_ZERO, just do the same manually for removing an item from 
the internal pool.

Jens Axboe

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