linux-kernel - [PATCH 0/2] kernfs: remove i_lock usage that isn't needed

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Date:   Tue, 18 Oct 2022 10:32:34 +0800
From:   Ian Kent <raven@...maw.net>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>
Cc:     Minchan Kim <minchan@...nel.org>,
        Eric Sandeen <sandeen@...deen.net>,
        Al Viro <viro@...IV.linux.org.uk>,
        Rick Lindsley <ricklind@...ux.vnet.ibm.com>,
        David Howells <dhowells@...hat.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        Carlos Maiolino <cmaiolino@...hat.com>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/2] kernfs: remove i_lock usage that isn't needed

In the patch series to change the global kernfs mutex to a read-write
semaphore the inode i_lock is used in several functions.

But after thinking about it the i_lock is in fact not needed.

Signed-off-by: Ian Kent <raven@...maw.net>
---

Ian Kent (2):
      kernfs: dont take i_lock on inode attr read
      kernfs: dont take i_lock on revalidate


 fs/kernfs/dir.c   | 24 +++++++++++++++++-------
 fs/kernfs/inode.c |  4 ----
 2 files changed, 17 insertions(+), 11 deletions(-)

--
Ian