linux-kernel - Re: + mm-shmem-use-kmem_cache_zalloc-in-shmem_alloc

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Message-ID: <20201117153132.GA4153@rlk>
Date:   Tue, 17 Nov 2020 23:31:32 +0800
From:   Hui Su <sh_def@....com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>, hughd@...gle.com
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        mm-commits@...r.kernel.org, sh_def@....com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: + mm-shmem-use-kmem_cache_zalloc-in-shmem_alloc_inode.patch
 added to -mm tree

On Tue, Nov 17, 2020 at 06:12:46PM +1100, Stephen Rothwell wrote:
> Hi Hugh,
> 
> On Mon, 16 Nov 2020 22:17:20 -0800 (PST) Hugh Dickins <hughd@...gle.com> wrote:
> >
> > On Mon, 16 Nov 2020, akpm@...ux-foundation.org wrote:
> > > 
> > > The patch titled
> > >      Subject: mm/shmem: use kmem_cache_zalloc in shmem_alloc_inode()
> > > has been added to the -mm tree.  Its filename is
> > >      mm-shmem-use-kmem_cache_zalloc-in-shmem_alloc_inode.patch
> > > 
> > > This patch should soon appear at
> > >     https://ozlabs.org/~akpm/mmots/broken-out/mm-shmem-use-kmem_cache_zalloc-in-shmem_alloc_inode.patch
> > > and later at
> > >     https://ozlabs.org/~akpm/mmotm/broken-out/mm-shmem-use-kmem_cache_zalloc-in-shmem_alloc_inode.patch
> > > 
> > > Before you just go and hit "reply", please:
> > >    a) Consider who else should be cc'ed
> > >    b) Prefer to cc a suitable mailing list as well
> > >    c) Ideally: find the original patch on the mailing list and do a
> > >       reply-to-all to that, adding suitable additional cc's
> > > 
> > > *** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
> > > 
> > > The -mm tree is included into linux-next and is updated
> > > there every 3-4 working days
> > > 
> > > ------------------------------------------------------
> > > From: Hui Su <sh_def@....com>
> > > Subject: mm/shmem: use kmem_cache_zalloc in shmem_alloc_inode()  
> > 
> > Andrew, Stephen, please revert this untested "cleanup" from your
> > trees a.s.a.p: it's a disaster for anyone using shmem/tmpfs.
> 
> Thanks for that.  I have also bisected my boot failures to that commit
> and so have reverted it from linux-next today.
> 
> -- 
> Cheers,
> Stephen Rothwell

Sorry for not full testing the change.
Please ignore this change.

Thanks.