Re: [PATCH 0/2] Remove PG_error

[Linus Torvalds]

On Tue, 23 Jul 2024 at 18:05, Matthew Wilcox (Oracle)
<willy@xxxxxxxxxxxxx> wrote:
>
> There were four pulls I had to wait for before I could send this to you,
> but PG_error is now unused and can be reclaimed.  It could wait until
> next merge window, but I don't see the point.

Well, I was initially inclined to agree with that, but then I did a
test-compile, and that immediately notices that you never tested this
at all and that it's completely broken.

There's still uses of PG_error in fs/proc/page.c, and in
include/trace/events/mmflags.h, and neither of those two cases are
new. One is unchanged from 2009, and the other one has gone through a
few code movements and re-orgs but also goes back over a decade ago.

So clearly this needs to be in linux-next, and as such this very much
is "next merge window".

                 Linus