From: Tejun Heo <tj@kernel.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Imran Khan <imran.f.khan@oracle.com>,
gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 6/7] kernfs: Introduce hashed rw-sem to replace per-fs kernfs_rwsem.
Date: Tue, 22 Feb 2022 08:09:51 -1000 [thread overview]
Message-ID: <YhUm7yVBSoxACRUb@slm.duckdns.org> (raw)
In-Reply-To: <Yg8Rq2H1C1ihFqds@zeniv-ca.linux.org.uk>
On Fri, Feb 18, 2022 at 03:25:31AM +0000, Al Viro wrote:
> There are very few sources of cross-directory moves in the entire system.
> One is cross-directory cgroup rename(2) (already serialized on per-fs basis
> on VFS level), another is device_move(). Which is uncommon (5 callers
FWIW, cgroup rename(2) doesn't allow changing the parent.
Thanks.
--
tejun
next prev parent reply other threads:[~2022-02-22 18:09 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-14 12:03 [PATCH v6 0/7] kernfs: Introduce hashed mutexes to replace global kernfs_open_file_mutex Imran Khan
2022-02-14 12:03 ` [PATCH v6 1/7] " Imran Khan
2022-02-14 17:50 ` Tejun Heo
2022-02-14 12:03 ` [PATCH v6 2/7] kernfs: Replace global kernfs_open_file_mutex with hashed mutexes Imran Khan
2022-02-14 12:03 ` [PATCH v6 3/7] kernfs: Introduce hashed spinlocks to replace global kernfs_open_node_lock Imran Khan
2022-02-14 12:03 ` [PATCH v6 4/7] kernfs: Replace global kernfs_open_node_lock with hashed spinlocks Imran Khan
2022-02-14 12:03 ` [PATCH v6 5/7] kernfs: Use a per-fs rwsem to protect per-fs list of kernfs_super_info Imran Khan
2022-02-14 12:03 ` [PATCH v6 6/7] kernfs: Introduce hashed rw-sem to replace per-fs kernfs_rwsem Imran Khan
2022-02-14 18:10 ` Tejun Heo
2022-02-16 1:46 ` Al Viro
2022-02-16 4:57 ` Imran Khan
2022-02-18 3:25 ` Al Viro
2022-02-22 18:09 ` Tejun Heo [this message]
2022-02-25 5:52 ` Imran Khan
2022-02-14 12:03 ` [PATCH v6 7/7] kernfs: Replace per-fs rwsem with hashed ones Imran Khan
2022-02-14 17:49 ` Nathan Chancellor
2022-02-16 8:57 ` [kbuild-all] " Chen, Rong A
2022-02-14 18:15 ` [PATCH v6 0/7] kernfs: Introduce hashed mutexes to replace global kernfs_open_file_mutex Tejun Heo
2022-02-25 5:43 ` Imran Khan
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