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 775561EF01; Fri, 21 Feb 2025 13:17:51 +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=1740143871; cv=none; b=A58mxQ6UhE3MqwxUCw5/08D2tYSfnI2jPG6IQVH538DdpHRZv6Vl9h1+VSfsYgUWjp1dSbgG+iArtX4/QDsQSKi2GY7aQ+uuV8boIvccLIp84TlMEFBmRf6ru8B3oytLvGldWm83VHIKv8i/Dw57CwIL9DKl6wtYUqeDsNbHqaY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740143871; c=relaxed/simple; bh=t3KlSrZkxM3GA7aU/aRI6TvC1M/rDRXJpf8V9xasUh4=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=M6u8Uv6IQvX7FjT7tez79B5LkgGzwaIAlp3ZpkjWoEV0oALXDUTEX/UOH8wfnhR3LrBvpRw3vBzdLeSV/9XWhEHGq3m21fX7/3L+/g0BXz6S25h5ose7nbKpDYzapP9qCdgrHMaF6q4MHqqe7JpxaJ0PzfQtPNutntsUHBawz9c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a6FxsWnu; 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="a6FxsWnu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 092D9C4CEE4; Fri, 21 Feb 2025 13:17:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740143871; bh=t3KlSrZkxM3GA7aU/aRI6TvC1M/rDRXJpf8V9xasUh4=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=a6FxsWnuGMN+khO+rITXfn7XYCQKxylrkIw8jE8m2xeNnOjjO87LPOlN6bxYB4sTz Yy5Wx7lHiM7Gm0kkhcLeZ24OjFFW5Vi65BbhFKQ7XzqkIjRkE3H3XYMx8qHCOuioMh fJhofIxhwa4aZKUefs/nU+2GU1JADuzfPnVb22KjR6DzVaNW607cuowEaPg3XYr5t1 l6W/tLuOu8+gdtqtWZDz2HHag4hnLCQWjIXWU8vtNt/lFsjHWJuKSHk9f4BvzZpJ3h CAzv0A5JOSnYFNfIxpHViC9mTOgYp0K8/V8ewEwLJ7wP551IxYJVmtVpCBQ7MWpFp4 3YJ4tb1Rr8xWA== Message-ID: <6df6e94e5a8623182aa7ed398270e817d4102303.camel@kernel.org> Subject: Re: [PATCH 2/6] hostfs: store inode in dentry after mkdir if possible. From: Jeff Layton To: NeilBrown , Alexander Viro , Christian Brauner , Jan Kara , Miklos Szeredi , Xiubo Li , Ilya Dryomov , Richard Weinberger , Anton Ivanov , Johannes Berg , Trond Myklebust , Anna Schumaker , Chuck Lever , Olga Kornievskaia , Dai Ngo , Tom Talpey , Sergey Senozhatsky Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-um@lists.infradead.org, ceph-devel@vger.kernel.org, netfs@lists.linux.dev Date: Fri, 21 Feb 2025 08:17:47 -0500 In-Reply-To: <20250220234630.983190-3-neilb@suse.de> References: <20250220234630.983190-1-neilb@suse.de> <20250220234630.983190-3-neilb@suse.de> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV 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2025-02-21 at 10:36 +1100, NeilBrown wrote: > After handling a mkdir, get the inode for the name and use > d_splice_alias() to store the correct dentry in the dcache. >=20 > Signed-off-by: NeilBrown > --- > fs/hostfs/hostfs_kern.c | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) >=20 > diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c > index ccbb48fe830d..a2c6b9051c5b 100644 > --- a/fs/hostfs/hostfs_kern.c > +++ b/fs/hostfs/hostfs_kern.c > @@ -682,14 +682,22 @@ static int hostfs_symlink(struct mnt_idmap *idmap, = struct inode *ino, > static struct dentry *hostfs_mkdir(struct mnt_idmap *idmap, struct inode= *ino, > struct dentry *dentry, umode_t mode) > { > + struct inode *inode; > char *file; > int err; > =20 > if ((file =3D dentry_name(dentry)) =3D=3D NULL) > return ERR_PTR(-ENOMEM); > err =3D do_mkdir(file, mode); > + if (err) { > + dentry =3D ERR_PTR(err); > + } else { > + inode =3D hostfs_iget(dentry->d_sb, file); > + d_drop(dentry); > + dentry =3D d_splice_alias(inode, dentry); > + } > __putname(file); > - return ERR_PTR(err); > + return dentry; > } > =20 > static int hostfs_rmdir(struct inode *ino, struct dentry *dentry) Reviewed-by: Jeff Layton