Re: [Kernel Bug] WARNING in mempool_alloc_noprof

[Christoph Hellwig]

On Tue, Feb 03, 2026 at 05:55:27PM +0100, Vlastimil Babka wrote:
> On 2/3/26 17:27, Christoph Hellwig wrote:
> > On Tue, Feb 03, 2026 at 06:52:39PM +0900, Harry Yoo wrote:
> >> Maybe the changelog could be rephrased a bit,
> >> but overall LGTM, thanks!
> > 
> > 
> > No, that does not make sense.  If mempool is used with __GFP_RECLAIM in
> > the flags it won't fail, and if it isn't, GFP_NOFAIL can't work.
> 
> So that means as long as there's __GFP_RECLAIM, __GFP_NOFAIL isn't wrong,
> just redundant.

Given how picky the rest of the mm is about __GFP_NOFAIL, silently
accepting it where it has no (or a weird and unexpected) effect
seems like a disservice to the users.