Re: [PATCH v2] net: fix sk_page_frag() recursion from memory reclaim

[Shakeel Butt]

On Thu, Oct 31, 2019 at 11:43 AM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> Hello,
>
> On Thu, Oct 31, 2019 at 11:30:57AM -0700, Shakeel Butt wrote:
> > Basically what I wanted to say that MM treats PF_MEMALLOC as the
> > reclaim context while __GFP_MEMALLOC just tells to give access to the
> > reserves. As gfpflags_allow_blocking() can be used beyond net
> > subsystem, my only concern is its potential usage under PF_MEMALLOC
> > context but without __GFP_MEMALLOC.
>
> Yeah, PF_MEMALLOC is likely the better condition to check here as we
> primarily want to know whether %current might be recursing and that
> should be indicated reliably with PF_MEMALLOC.  Wanna prep a patch for
> it?

Sure, I will keep your commit message and authorship (if you are ok with it).

>
> Thanks.
>
> --
> tejun