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From: Al Viro <viro@zeniv.linux.org.uk>
To: NeilBrown <neilb@suse.de>
Cc: Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Danilo Krummrich <dakr@kernel.org>,
	Kent Overstreet <kent.overstreet@linux.dev>,
	Trond Myklebust <trondmy@kernel.org>,
	Anna Schumaker <anna@kernel.org>,
	Namjae Jeon <linkinjeon@kernel.org>,
	Steve French <sfrench@samba.org>,
	Sergey Senozhatsky <senozhatsky@chromium.org>,
	Tom Talpey <tom@talpey.com>, Paul Moore <paul@paul-moore.com>,
	Eric Paris <eparis@redhat.com>,
	linux-kernel@vger.kernel.org, linux-bcachefs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
	linux-cifs@vger.kernel.org, audit@vger.kernel.org
Subject: Re: [PATCH 2/2] VFS: add common error checks to lookup_one_qstr_excl()
Date: Wed, 12 Feb 2025 04:06:04 +0000	[thread overview]
Message-ID: <20250212040604.GN1977892@ZenIV> (raw)
In-Reply-To: <173933190416.22054.5881139463496565922@noble.neil.brown.name>

On Wed, Feb 12, 2025 at 02:45:04PM +1100, NeilBrown wrote:
> On Wed, 12 Feb 2025, Al Viro wrote:

> I do see some value in the simplicity of this approach, though maybe not
> as much value as you see.  But the above uses inode_lock_share(), rather
> than the nested version, so lockdep will complain.

IDGI...  It doesn't grab any ->i_rwsem inside that one, so what's there to
complain about?  And in that case it returns with no locks held, so...

  reply	other threads:[~2025-02-12  4:06 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-07  3:36 [PATCH 0/2] VFS: minor improvements to a couple of interfaces NeilBrown
2025-02-07  3:36 ` [PATCH 1/2] VFS: change kern_path_locked() and user_path_locked_at() to never return negative dentry NeilBrown
2025-02-07  3:46   ` Kent Overstreet
2025-02-07  4:53     ` NeilBrown
2025-02-07  6:13       ` Kent Overstreet
2025-02-07  6:34         ` NeilBrown
2025-02-07  6:51           ` Kent Overstreet
2025-02-07  7:30             ` NeilBrown
2025-02-07 13:35               ` Kent Overstreet
2025-02-10  1:20                 ` NeilBrown
2025-02-10 16:33                   ` Kent Overstreet
2025-02-12  3:24                     ` NeilBrown
2025-02-07  6:51         ` [PATCH 1/2 v2] " NeilBrown
2025-02-07  6:53       ` [PATCH 1/2] " NeilBrown
2025-02-07 19:09   ` Paul Moore
2025-02-07  3:36 ` [PATCH 2/2] VFS: add common error checks to lookup_one_qstr_excl() NeilBrown
2025-02-12  2:50   ` kernel test robot
2025-02-12  3:16   ` Al Viro
2025-02-12  3:25     ` Al Viro
2025-02-12  3:45       ` NeilBrown
2025-02-12  4:06         ` Al Viro [this message]
2025-02-12  4:40           ` NeilBrown
2025-02-10  8:25 ` [PATCH 0/2] VFS: minor improvements to a couple of interfaces Christian Brauner
2025-02-10  8:42   ` Al Viro
2025-02-10  9:41     ` Christian Brauner
  -- strict thread matches above, loose matches on Subject: below --
2025-02-17  0:27 [PATCH 0/2 v2] " NeilBrown
2025-02-17  0:27 ` [PATCH 2/2] VFS: add common error checks to lookup_one_qstr_excl() NeilBrown
2025-02-17 13:46   ` Jeff Layton

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