From: Rustam Kovhaev <rkovhaev@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: "Darrick J. Wong" <djwong@kernel.org>,
David Rientjes <rientjes@google.com>,
Dave Chinner <david@fromorbit.com>,
linux-xfs@vger.kernel.org, cl@linux.com, penberg@kernel.org,
iamjoonsoo.kim@lge.com, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
gregkh@linuxfoundation.org, Al Viro <viro@zeniv.linux.org.uk>,
dvyukov@google.com
Subject: Re: [PATCH] xfs: use kmem_cache_free() for kmem_cache objects
Date: Wed, 13 Oct 2021 09:56:41 -0700 [thread overview]
Message-ID: <YWcPyYk0Rlyvl9a9@nuc10> (raw)
In-Reply-To: <3928ef69-eaac-241c-eb32-d2dd2eab9384@suse.cz>
On Wed, Oct 13, 2021 at 09:38:31AM +0200, Vlastimil Babka wrote:
> On 10/13/21 01:22, Darrick J. Wong wrote:
> > On Tue, Oct 12, 2021 at 11:32:25PM +0200, Vlastimil Babka wrote:
> >> On 10/12/2021 10:43 PM, Darrick J. Wong wrote:
> >> > On Tue, Oct 12, 2021 at 01:43:20PM -0700, Darrick J. Wong wrote:
> >> >> On Sun, Oct 03, 2021 at 06:07:20PM -0700, David Rientjes wrote:
> >> >>
> >> >> I audited the entire xfs (kernel) codebase and didn't find any other
> >> >> usage errors. Thanks for the patch; I'll apply it to for-next.
> >>
> >> Which patch, the one that started this thread and uses kmem_cache_free() instead
> >> of kfree()? I thought we said it's not the best way?
> >
> > It's probably better to fix slob to be able to tell that a kmem_free'd
> > object actually belongs to a cache and should get freed that way, just
> > like its larger sl[ua]b cousins.
>
> Agreed. Rustam, do you still plan to do that?
Yes, I do, thank you.
>
> > However, even if that does come to pass, anybody /else/ who wants to
> > start(?) using XFS on a SLOB system will need this patch to fix the
> > minor papercut. Now that I've checked the rest of the codebase, I don't
> > find it reasonable to make XFS mutually exclusive with SLOB over two
> > instances of slab cache misuse. Hence the RVB. :)
>
> Ok. I was just wondering because Dave's first reply was that actually you'll
> need to expand the use of kfree() instead of kmem_cache_free().
>
next prev parent reply other threads:[~2021-10-13 16:56 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-29 21:23 Rustam Kovhaev
2021-09-30 4:42 ` Dave Chinner
2021-09-30 8:13 ` Vlastimil Babka
2021-09-30 18:48 ` Rustam Kovhaev
2021-09-30 21:10 ` Vlastimil Babka
2021-10-01 0:32 ` Rustam Kovhaev
2021-10-04 1:07 ` David Rientjes
2021-10-12 20:43 ` Darrick J. Wong
2021-10-12 20:43 ` Darrick J. Wong
2021-10-12 21:32 ` Vlastimil Babka
2021-10-12 23:22 ` Darrick J. Wong
2021-10-13 7:38 ` Vlastimil Babka
2021-10-13 16:56 ` Rustam Kovhaev [this message]
2021-10-15 0:57 ` Darrick J. Wong
2021-10-18 3:38 ` [PATCH] slob: add size header to all allocations Rustam Kovhaev
2021-10-18 9:22 ` Vlastimil Babka
2021-10-19 1:22 ` Rustam Kovhaev
2021-10-20 11:46 ` Hyeonggon Yoo
2021-10-21 17:36 ` Vlastimil Babka
2021-10-23 6:41 ` [PATCH v2] " Rustam Kovhaev
2021-10-25 9:36 ` Vlastimil Babka
2021-10-25 21:49 ` Rustam Kovhaev
2021-10-29 3:05 ` [PATCH v3] " Rustam Kovhaev
2021-11-16 11:26 ` Vlastimil Babka
2021-11-16 23:19 ` Rustam Kovhaev
2021-11-22 1:30 ` [PATCH v4] " Rustam Kovhaev
2021-11-22 9:22 ` Christoph Lameter
2021-11-22 9:40 ` Vlastimil Babka
2021-11-22 10:36 ` Christoph Lameter
2021-11-22 10:45 ` Vlastimil Babka
2021-11-22 11:40 ` Christoph Lameter
2021-11-22 11:49 ` Vlastimil Babka
2021-11-23 10:18 ` David Laight
2021-11-30 7:00 ` Rustam Kovhaev
2021-11-30 9:23 ` David Laight
2021-11-30 9:41 ` Christoph Lameter
2021-11-30 14:55 ` Vlastimil Babka
2021-11-30 15:21 ` David Laight
2021-11-30 15:39 ` Vlastimil Babka
2021-11-30 15:26 ` Christoph Lameter
2021-10-24 10:43 ` [PATCH] " Hyeonggon Yoo
2021-10-25 8:19 ` Vlastimil Babka
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