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Message-ID: <20220621132251.sloxxcbecwmurb42@revolver>
Date: Tue, 21 Jun 2022 13:22:59 +0000
From: Liam Howlett <liam.howlett@...cle.com>
To: David Hildenbrand <david@...hat.com>
CC: "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] maple_tree: Make mas_prealloc() error checking more
generic
* David Hildenbrand <david@...hat.com> [220621 05:09]:
> On 15.06.22 19:42, Liam Howlett wrote:
> > Return the error regardless of what it is. This is a safer option.
> >
> > Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
> > ---
> > lib/maple_tree.c | 5 ++---
> > 1 file changed, 2 insertions(+), 3 deletions(-)
> >
> > diff --git a/lib/maple_tree.c b/lib/maple_tree.c
> > index f413b6f0da2b..89ff5ef7ee28 100644
> > --- a/lib/maple_tree.c
> > +++ b/lib/maple_tree.c
> > @@ -5670,16 +5670,15 @@ void mas_store_prealloc(struct ma_state *mas, void *entry)
> > */
> > int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp)
> > {
> > -
> > mas_set_alloc_req(mas, 1 + mas_mt_height(mas) * 3);
> > mas_alloc_nodes(mas, gfp);
> > - if (likely(mas->node != MA_ERROR(-ENOMEM)))
> > + if (likely(!mas_is_err(mas)))
> > return 0;
> >
> > mas_set_alloc_req(mas, 0);
> > mas_destroy(mas);
> > mas->node = MAS_START;
> > - return -ENOMEM;
> > + return xa_err(mas->node);
> > }
> >
> > /*
>
> Liam, (as asked privately before, I was just too busy to respond :) )
> once all known issues are fixed, can we have a new version posted to
> ease review? That would make my life easier to see what needs review and
> in which order patches apply. Thanks!
>
Yes. Thanks for asking.
Andrew didn't want to lose the comments so maybe I'll squash the fixes
into a branch and send that out as a response to v9 if that works?
Cheers,
Liam
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