[PATCH] drm/shmem-helper: Fix locking for drm_gem_shmem_get_pages_sgt()

[Javier Martinez Canillas]

On 2/6/23 19:47, Javier Martinez Canillas wrote:
> Hello Lina,
> 
> On 2/5/23 13:51, Asahi Lina wrote:
>> Other functions touching shmem->sgt take the pages lock, so do that here
>> too. drm_gem_shmem_get_pages() & co take the same lock, so move to the
>> _locked() variants to avoid recursive locking.
>>
>> Discovered while auditing locking to write the Rust abstractions.
>>
>> Fixes: 2194a63a818d ("drm: Add library for shmem backed GEM objects")
>> Fixes: 4fa3d66f132b ("drm/shmem: Do dma_unmap_sg before purging pages")
>> Signed-off-by: Asahi Lina <lina at asahilina.net>
>> ---
> 
> Good catch. The patch looks good to me.
> 
> Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>
> 

Pushed this to drm-misc (drm-misc-next). Thanks!

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat