From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 47DC21F1537; Thu, 5 Feb 2026 12:36:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770295019; cv=none; b=sbe9soMpkyWAAaExtX1C2RGmadQc2UPAW+bejkeYEa0LRY/DocV1fHicfOWwF2ql+8NN0V9lAyFCwSmvKL5UYSBygV4Lkd0bm6ma5IMxK+qrcjqI7QW3OEhXePWVEzp6P8Et3eUrOvgJHWE9FHCDKKuGLr4pFcdKJs6QAWG0Z/s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770295019; c=relaxed/simple; bh=r/RWmitTDtOL5zacBcM1kz+XoL+DdBMTmApl8Pq8ui8=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=MH0TW7Mz2/eE2k/QQhXCFz1aWy58ZxxTL/hiZ5gzXhssXulLcZK//zt7oSK+hJlV9CqOE5L829g7ndJb3PO1+7BWUnQftrK1E7mqIuGHsQlJl8PCk4p7d5AyLhz6yP19XvvwmHST/VNa2aXFL7SoWJ8FBr9rW4TzgTaE+0co+Oc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YFZT7KVA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YFZT7KVA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37E9CC19423; Thu, 5 Feb 2026 12:36:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770295019; bh=r/RWmitTDtOL5zacBcM1kz+XoL+DdBMTmApl8Pq8ui8=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=YFZT7KVAa5p4zKtTDyCaxee5VRJZOnFGXi4oTMUzFY2FBOD/pz7iS7JCcxsiuntfC mv1CnHEWss1lbx5p1myttORt3TyAbZhdG6hloq3KrhXWNbOoKp2vvUyKbIxgicUIWD nf8sRBPWihATme4F0s0uGzZeLtyLkB1eDL2ngwHEjv7JeWvBa/p+PS7naOtX99zVMW ijOfqZwmruNnbGvSyw9bmI2fa/qDoxdiBqnERWam1XRUrT+QDu29LG4EMiiIvVVrW9 4cOED4MLS8Jg26e5FUt7rR+dJGDalHZ1oM0w9C338s5NGMod5ptrYd5OZ9wWgmDScG sHQ6UN/jEeROA== Message-ID: Subject: Re: [PATCH 06/13] nfsd: switch purge_old() to use start_removing_noperm() From: Jeff Layton To: NeilBrown , Christian Brauner , Alexander Viro , David Howells , Jan Kara , Chuck Lever , Miklos Szeredi , Amir Goldstein , John Johansen , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley Cc: linux-kernel@vger.kernel.org, netfs@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-unionfs@vger.kernel.org, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Date: Thu, 05 Feb 2026 07:36:56 -0500 In-Reply-To: <20260204050726.177283-7-neilb@ownmail.net> References: <20260204050726.177283-1-neilb@ownmail.net> <20260204050726.177283-7-neilb@ownmail.net> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV YrOOI5VGLHge0awt7bhMCTM9KAfPc+xL/ZxAMVWd3NCk5SamL2cE99UWgtvNOIYU8m6EjTLhsj8sn 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DfX/sn9XcfoVZIxMpCRE750zvJvcCUz9HojsrMQ1NFc7MFT1z3MOW2/RlzPcog7xvR5ENPH19ojRD CHqumUHRry+RF0lH00clzX/W8OrQJZtoBPXv9ahka/Vp7kEulcBJr1cH5Wz/WprhsIM7U9pse1f1g Yy9YbXtWctUz8uvDR7shsQxAhX3qO7DilMtuGo1v97I/Kx4gXQ52syh/w6EBny71CZrOgD6kJwPVV AaM1LRC28muq91WCFhs/nzHozpbzcheyGtMUI2Ao4K6mnY+3zIuXPygZMFr9KXE6fF7HzKxKuZMJO aEZCiDOq0anx6FmOzs5E6Jqdpo/mtI8beK+BE7Va6ni7YrQlnT0i3vaTVMTiCThbqsB20VrbMjlhp f8lfK1XVNbRq/R7GZ9zHESlsa35ha60yd/j3pu5hT2xyy8krV8vGhHvnJ1XRMJBAB/UYb6FyC7S+m QZIQXVeAA+smfTT0tDrisj1U5x6ZB9b3nBg65kc= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.2 (3.58.2-1.fc43) Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Wed, 2026-02-04 at 15:57 +1100, NeilBrown wrote: > From: NeilBrown >=20 > Rather than explicit locking, use the start_removing_noperm() and > end_removing() wrappers. > This was not done with other start_removing changes due to conflicting > in-flight patches. >=20 > Signed-off-by: NeilBrown > --- > fs/nfsd/nfs4recover.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) >=20 > diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c > index 441dfbfe2d2b..52fbe723a3c8 100644 > --- a/fs/nfsd/nfs4recover.c > +++ b/fs/nfsd/nfs4recover.c > @@ -351,16 +351,14 @@ purge_old(struct dentry *parent, char *cname, struc= t nfsd_net *nn) > if (nfs4_has_reclaimed_state(name, nn)) > goto out_free; > =20 > - inode_lock_nested(d_inode(parent), I_MUTEX_PARENT); > - child =3D lookup_one(&nop_mnt_idmap, &QSTR(cname), parent); > + child =3D start_removing_noperm(parent, &QSTR(cname)); > if (!IS_ERR(child)) { > status =3D vfs_rmdir(&nop_mnt_idmap, d_inode(parent), child, NULL); > if (status) > printk("failed to remove client recovery directory %pd\n", > child); > - dput(child); > } > - inode_unlock(d_inode(parent)); > + end_removing(child); > =20 > out_free: > kfree(name.data); Reviewed-by: Jeff Layton