linux-kernel - Re: [PATCH 02/11] vfs: Remove unnecessary list_for_each_entry

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Message-ID: <20231207022659.GT1674809@ZenIV>
Date:   Thu, 7 Dec 2023 02:26:59 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Dave Chinner <david@...morbit.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-cachefs@...hat.com, dhowells@...hat.com,
        gfs2@...ts.linux.dev, dm-devel@...ts.linux.dev,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/11] vfs: Remove unnecessary list_for_each_entry_safe()
 variants

On Wed, Dec 06, 2023 at 05:05:31PM +1100, Dave Chinner wrote:
> From: Jan Kara <jack@...e.cz>
> 
> evict_inodes() and invalidate_inodes() use list_for_each_entry_safe()
> to iterate sb->s_inodes list. However, since we use i_lru list entry for
> our local temporary list of inodes to destroy, the inode is guaranteed
> to stay in sb->s_inodes list while we hold sb->s_inode_list_lock. So
> there is no real need for safe iteration variant and we can use
> list_for_each_entry() just fine.
> 
> Signed-off-by: Jan Kara <jack@...e.cz>
> Signed-off-by: Waiman Long <longman@...hat.com>

ACKed-by: Al Viro <viro@...iv.linux.org.uk>