[Linaro-mm-sig] [PATCH 1/4] dma-buf: don't hold the mutex around map/unmap calls

[Sumit Semwal]

On 19 March 2012 05:04, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> The mutex protects the attachment list and hence needs to be held
> around the callbakc to the exporters (optional) attach/detach
> functions.
>
> Holding the mutex around the map/unmap calls doesn't protect any
> dma_buf state. Exporters need to properly protect any of their own
> state anyway (to protect against calls from their own interfaces).
> So this only makes the locking messier (and lockdep easier to anger).
>
> Therefore let's just drop this.
>
> v2: Rebased on top of latest dma-buf-next git.
>
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> Reviewed-by: Rob Clark <rob.clark at linaro.org>
Thanks; Applied to for-next.
> ---
<snip>
BR,
~Sumit.