Re: [alternative-merged] mm-z3fold-fix-z3fold_buddy_slots-use-after-free.patch removed from -mm tree

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On Thu, 11 Jul 2019 08:29:43 +0200 Vitaly Wool <vitalywool@xxxxxxxxx> wrote:

> Hi Andrew,
> 
> 
> Den tors 11 juli 2019 1:57 fm <akpm@xxxxxxxxxxxxxxxxxxxx> skrev:
> 
> >
> > The patch titled
> >      Subject: mm/z3fold.c: fix z3fold_buddy_slots use after free
> > has been removed from the -mm tree.  Its filename was
> >      mm-z3fold-fix-z3fold_buddy_slots-use-after-free.patch
> >
> > This patch was dropped because an alternative patch was merged
> >
> 
> I would really like to have this patch dropped instead, because then the
> compaction patch will not be wrecked.

OK, I am now horridly confused.  If you prefer "mm/z3fold.c: fix
z3fold_buddy_slots use after free" then why did you send me "mm/z3fold:
don't try to use buddy slots after free"?

Also, I assume that "the compaction patch" is "z3fold: add inter-page
compaction"?  That patch was dropped on July 1, which is rather a long
time ago.  It still applies (with a single trivial reject) on
"mm/z3fold: don't try to use buddy slots after free", so what's the
problem?

For reference, there are presently four z3fold patches in -mm:

https://ozlabs.org/~akpm/mmots/broken-out/mm-z3foldc-lock-z3fold-page-before-__setpagemovable.patch
https://ozlabs.org/~akpm/mmots/broken-out/mm-z3foldc-lock-z3fold-page-before-__setpagemovable-fix.patch
https://ozlabs.org/~akpm/mmots/broken-out/mm-z3foldc-dont-try-to-use-buddy-slots-after-free.patch
https://ozlabs.org/~akpm/mmots/broken-out/mm-z3foldc-remove-z3fold_migration-trylock.patch



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