From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CDBC1C021B3 for ; Fri, 21 Feb 2025 13:17:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Date:Cc:To:From :Subject:Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=JTNDtBhXmnjwL4LYankJFPzs0bQwwB7wc9CD5K5UAFQ=; b=daNfTeJD+qF3JSCnpS7XEgdOPD HtByqMjU2Vcj0DSEpFLd4/QEXO+uhFaA93jCwFn3NPAVxGOTtsvB7ULVAwzD4eTM17FQAqFBVRhNP ya5IqbINZZYzbXHhKulEJSegFY3wMHuay4MIp1GdhgVSt6+yxOqCy5WeyGJkHH4KtF57dvx91/eI3 XU1FKXlA6Zq1sd4oYlemQ7v/Guc6w9V6Oy/ueP/xJVjXa+atOu75GOMv42CnbLEQ5q9b7JZnNf7Ju BI8z7MEexXdhPiIMs+51/VAKdfPvZlp7L8bzeqVKy8DCat7TkfsnQTjDMj/8psf6eu7xTvnX6X3PP WX4QPYYw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tlSug-00000005btU-0U8B; Fri, 21 Feb 2025 13:17:54 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tlSue-00000005brR-2DGy for linux-um@lists.infradead.org; Fri, 21 Feb 2025 13:17:53 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 336295C635C; Fri, 21 Feb 2025 13:17:12 +0000 (UTC) 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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sfid-20250221_051752_674829_DE716424 X-CRM114-Status: GOOD ( 14.35 ) X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org On Fri, 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