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Date: Mon, 14 Oct 2024 11:33:19 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Baokun Li <libaokun1@huawei.com>
Cc: stable@vger.kernel.org, stable-commits@vger.kernel.org,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Yang Erkun <yangerkun@huawei.com>
Subject: Re: Patch "Revert "mm/filemap: avoid buffered read/write race to
 read inconsistent data"" has been added to the 6.6-stable tree
Message-ID: <2024101411-easing-footprint-d770@gregkh>
References: <20241011001701.1645057-1-sashal@kernel.org>
 <886a1275-814d-4be9-9339-5118c7dc2819@huawei.com>
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In-Reply-To: <886a1275-814d-4be9-9339-5118c7dc2819@huawei.com>

On Fri, Oct 11, 2024 at 09:44:42AM +0800, Baokun Li wrote:
> On 2024/10/11 8:17, Sasha Levin wrote:
> > This is a note to let you know that I've just added the patch titled
> > 
> >      Revert "mm/filemap: avoid buffered read/write race to read inconsistent data"
> > 
> > to the 6.6-stable tree which can be found at:
> >      http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> > 
> > The filename of the patch is:
> >       revert-mm-filemap-avoid-buffered-read-write-race-to-.patch
> > and it can be found in the queue-6.6 subdirectory.
> > 
> > If you, or anyone else, feels it should not be added to the stable tree,
> > please let <stable@vger.kernel.org> know about it.
> > 
> Hi Sasha,
> 
> The current patch is a cleanup after adding
> smp_load_acquire/store_release() to i_size_read/write().
> 
> In my opinion stable versions continue to use smp_rmb just fine,
> no need to backport the current patch to stable.
> 
> In addition, the current patch belongs to a patch set:
> 
>  https://lore.kernel.org/all/20240124142857.4146716-1-libaokun1@huawei.com/
> 
> If the current patch does need to be backported to stable, then the
> entire patch set needs to be backported or problems will be introduced.
> 
> All the patches in the patch set are listed below:
> 
>  d8f899d13d72 ("fs: make the i_size_read/write helpers be
> smp_load_acquire/store_release()")
>  4b944f8ef996 ("Revert "mm/filemap: avoid buffered read/write race to read
> inconsistent data"")
>  ad72872eb3ae ("asm-generic: remove extra type checking in acquire/release
> for non-SMP case")

Ok, now dropped, thanks

greg k-h