Re: FAILED: patch "[PATCH] pipe: increase minimum default pipe size to 2 pages" failed to apply to 4.4-stable tree

[Willy Tarreau <w@1wt.eu>]

On Tue, Aug 10, 2021 at 08:54:13AM +0200, Greg Kroah-Hartman wrote:
> > Greg, do you *really* want to backport it to 4.4 ? I mean, if nobody
> > faces this issue in 4.4 I can see more risks with the fix that without
> > for systems with low memory (or manually tuned memory usage).
> 
> I always prefer to merge "known fixes" to the stable kernel trees as
> somehow once one person hits a bug, everyone hits it, no matter how long
> it was in hiding :)
> 
> The additional memory usage here seems low to me, and we backported the
> needed accounting changes there a long time ago, and we know that 4.4.y
> is being used for build servers as well as other huge hosting providers.
> The "tiny" systems that might be on 4.4 are not really updating
> themselves to newer kernels from what I can tell.

I agree that someone sticking to 4.4 surely doesn't want to update.

> So I would prefer to take this patch, but am always willing to revert it
> if someone reports problems with it,

In this case I agree, given that such a problem, if any, would be quick
to notice.

Thanks,
Willy