Re: [PATCH] net_dma: fix memory leak in dma_pin_iocvec_pages

From: Vinod Koul
Date: Thu Sep 25 2014 - 12:44:25 EST

On Tue, Sep 23, 2014 at 11:27:06PM -0700, Dan Williams wrote:
> On Tue, Sep 23, 2014 at 9:57 PM, Vinod Koul <vinod.koul@xxxxxxxxx> wrote:
> > On Wed, Sep 03, 2014 at 01:28:59PM +0400, Roman Gushchin wrote:
> >> dma_pin_iovec_pages() calls get_user_pages() for each iovec. If
> >> get_user_pages() returns a number smaller than the requested number,
> >> dma_pin_iovec_pages() calls dma_unpin_iovec_pages(). It releases
> >> previously allocated iovecs, but pages pinned by last get_user_pages()
> >> call remain unreleased.
> >> Fix this by calling put_page() for each such page.
> >>
> > Applied, thanks
> Vinod, I have a patch in my queue that completely removes the remnants
> of NET_DMA. It's been deprecated for more than a few cycles now
> without any reports to reinstate it. Time to push the final removal
> patch. I'll rebase it on top of this so it doesn't collide.

Okay, thanks for update. If you wnat I can remove it, so you don't need to


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