Re: WTF: patch "[PATCH] net_dma: simple removal" was seriously submitted to be applied to the 3.17-stable tree?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Oct 23, 2014 at 07:14:20AM -0700, Dan Williams wrote:
> On Thu, Oct 23, 2014 at 6:52 AM, Roman Gushchin <klamm@xxxxxxxxxxxxxx> wrote:
> >> That find by Roman discovered that even though NET_DMA was marked
> >> broken we were still attempting to pin pages for dma offload.
> >
> > Not really. Actually I had NET_DMA in my config by mistake.
> 
> Well, that is material to whether this patch should be applied.  I had
> another report from someone stating that changing the get_user_pages()
> call to get_user_pages_fast() improved a network performance benchmark
> by a large margin.  We shouldn't be pinning pages at all, so with
> those two reports I proceeded with deleting rather than mess around
> with more surgical disabling.  Let me take a closer look and put
> together a smaller patch for -stable.

Ok, especially as your patch didn't even apply to 3.17-stable :)
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]