[PATCH 02/27] drm/etnaviv: split obj locks in different classes depending on the obj type
p.zabel at pengutronix.de
Fri Dec 1 11:33:37 UTC 2017
On Fri, 2017-12-01 at 11:35 +0100, Lucas Stach wrote:
> Userptr, prime and shmem buffer objects have different lock ordering
> requirements. This is mostly due to the fact that we don't allow to mmap
> userptr buffers, so we won't ever end up in our fault handler for those,
> so some of the code pathes are never called with the mmap_sem held.
> To avoid lockdep false positives, split them up into different lock classes.
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>
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