Linux EXT4 FS development
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From: Jinjie Ruan <ruanjinjie@huawei.com>
To: Theodore Tso <tytso@mit.edu>
Cc: <bcrl@kvack.org>, <viro@zeniv.linux.org.uk>, <brauner@kernel.org>,
	<jack@suse.cz>, <adilger.kernel@dilger.ca>,
	<libaokun@linux.alibaba.com>, <ojaswin@linux.ibm.com>,
	<ritesh.list@gmail.com>, <yi.zhang@huawei.com>,
	<sforshee@kernel.org>, <akpm@linux-foundation.org>,
	<pmladek@suse.com>, <rostedt@goodmis.org>,
	<andriy.shevchenko@linux.intel.com>, <linux@rasmusvillemoes.dk>,
	<senozhatsky@chromium.org>, <kees@kernel.org>, <tglx@kernel.org>,
	<linux-fsdevel@vger.kernel.org>, <linux-aio@kvack.org>,
	<linux-kernel@vger.kernel.org>, <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH v3 0/8] Convert barrier pairs to acquire/release for better performance
Date: Fri, 4 Sep 2026 15:20:07 +0800	[thread overview]
Message-ID: <c2400971-42bc-463c-a644-d2e307bd88ac@huawei.com> (raw)
In-Reply-To: <apgv5w116frzutwH@mit.edu>



在 2026/9/2 22:19, Theodore Tso 写道:
> On Wed, Sep 02, 2026 at 03:47:57PM -0500, Jinjie Ruan wrote:
>>
>> This series converts some existing smp_wmb()/smp_rmb() barrier pairs to
>> smp_store_release()/smp_load_acquire() across various subsystems.
> 
> I would like to land the ext4 related patches through the ext4 tree,
> so please detach them from this patch series.  That's because I want
> to be able to monitor the regression testing before sending a pull
> request to Linus.

Hi Ted,

Thanks for your feedback. I will split out the ext4-related patches.

Thanks,
Jinjie

> 
> More generally, I think we should be looking at this kind of barrier
> conversion on a per site basis.  If there is a bug that isn't notice,
> it can result in a very hard to debug problem.  And if the benefit of
> speeding up a particular code path isn't particularly that great,
> maybe the cost vs benefit vs risk calculation might cause us to decide
> to take a pass on the change.
> 
> Cheers,
> 
> 					- Ted


  parent reply	other threads:[~2026-09-04  7:20 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-02  7:47 [PATCH v3 0/8] Convert barrier pairs to acquire/release for better performance Jinjie Ruan
2026-09-02  7:47 ` [PATCH v3 1/8] user_namespace: Use acquire/release for nr_extents synchronization Jinjie Ruan
2026-09-02  7:53   ` sashiko-bot
2026-09-02 10:09   ` Bradley Morgan
2026-09-02 13:03   ` Andy Shevchenko
2026-09-02 13:04     ` Andy Shevchenko
2026-09-03  1:42       ` Jinjie Ruan
2026-09-03  2:16     ` Jinjie Ruan
2026-09-02  7:47 ` [PATCH v3 2/8] lib/vsprintf: Use acquire/release for ptr_key publication Jinjie Ruan
2026-09-02  7:52   ` sashiko-bot
2026-09-04 13:13   ` Petr Mladek
2026-09-02  7:48 ` [PATCH v3 3/8] fs: aio: Use acquire/release for ring->tail publication Jinjie Ruan
2026-09-02  7:57   ` sashiko-bot
2026-09-02  7:48 ` [PATCH v3 4/8] fs: Use acquire/release for fdtable resize synchronization Jinjie Ruan
2026-09-02  7:53   ` sashiko-bot
2026-09-02  7:48 ` [PATCH v3 5/8] pidfs: Use test_bit_acquire() for attr flag tests Jinjie Ruan
2026-09-02  7:55   ` sashiko-bot
2026-09-02  7:48 ` [PATCH v3 6/8] super: Use acquire for SB_BORN check in super_cache_count() Jinjie Ruan
2026-09-02  7:58   ` sashiko-bot
2026-09-02  7:48 ` [PATCH v3 7/8] ext4: Fix out-of-bounds read in ext4_get_group_info() Jinjie Ruan
2026-09-02  8:01   ` sashiko-bot
2026-09-02  7:48 ` [PATCH v3 8/8] ext4: Convert group-count barrier protocol to acquire/release Jinjie Ruan
2026-09-02  7:58   ` sashiko-bot
2026-09-02 14:19 ` [PATCH v3 0/8] Convert barrier pairs to acquire/release for better performance Theodore Tso
2026-09-02 14:56   ` Jan Kara
2026-09-04  7:20   ` Jinjie Ruan [this message]
2026-09-04 12:28 ` Petr Mladek

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