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 068D7208AD; Fri, 21 Feb 2025 13:31:17 +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=1740144678; cv=none; b=VfsIol8N/anEQ/1fXNlYteAbNvr02wgZ8Y8j1Vzu8oSMgwFMKwe1VVfJcEgIeRnmcz+ZWBDdLyXgX4BoHwDJ2EY59sw/dUvSUK7cStPeli1YyhBV9zaik3SrT+KyFr5Jj5n7XhRRJ7IUvDTHwW/YdAA16/SEj2weTgL2VPZbmJM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740144678; c=relaxed/simple; bh=kyjVU15nTzpcXtCWhYxICHUjLRMJawW3kP28nGspfgg=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=iSNjaDAxlrVV+eeWOJ3VRUb9h8+HhpuVCQCtHBNE7Ztm9RKPDbNfnOeJYAVui3el9wu24V7H27vMY+I11At3V19IvjZIxidadVpWz/6VSCeC/LhDgEHraqCMVXPit9B2YVxZASsASDQ1px8/FHU1xPpvFYepsMgryRtT98jeScs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pKQ+CUNI; 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="pKQ+CUNI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BBDC9C4CED6; Fri, 21 Feb 2025 13:31:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740144677; bh=kyjVU15nTzpcXtCWhYxICHUjLRMJawW3kP28nGspfgg=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=pKQ+CUNIxD9BBLKushQCjIsoWp8zgp5Pl4Q37KFUYsfKQaVJcwbew5jmsnNhAFqTP 6amjyQyDte0lhlu6JSXTcjEilF8RDe3WrJbcfsLAGn8fr+0Xexa7ItSZDHWy1qDX2v xsJVsCKcWjSIFmxapm1yGl3uREQ9ycpi9Ork5+LMhNRFipNsEz8y+oxT6x+UhrQOhV nXynmAIfyltx2BI4Lyc9u+KdHVaHEYJTSLSz5XS+V7ScSnAbeQYl9bkjO3/d2Dssbm gh4Ou8N4JsYgw1mwBJ9ncwoJk+rh3nAnQf4qfalw02OLW/GGkK3FLDYOF4kA9lKucJ 6K2Y2wwSfrTPw== Message-ID: <64248546def6697c52169b5255da5745753eeab0.camel@kernel.org> Subject: Re: [PATCH 3/6] ceph: return the correct dentry on mkdir 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 08:31:14 -0500 In-Reply-To: <20250220234630.983190-4-neilb@suse.de> References: <20250220234630.983190-1-neilb@suse.de> <20250220234630.983190-4-neilb@suse.de> Autocrypt: addr=jlayton@kernel.org; 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text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.3 (3.54.3-1.fc41) Precedence: bulk X-Mailing-List: netfs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Fri, 2025-02-21 at 10:36 +1100, NeilBrown wrote: > ceph already splices the correct dentry (in splice_dentry()) from the > result of mkdir but does nothing more with it. >=20 > Now that ->mkdir can return a dentry, return the correct dentry. >=20 > Signed-off-by: NeilBrown > --- > fs/ceph/dir.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) >=20 > diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c > index 39e0f240de06..c1a1c168bb27 100644 > --- a/fs/ceph/dir.c > +++ b/fs/ceph/dir.c > @@ -1099,6 +1099,7 @@ static struct dentry *ceph_mkdir(struct mnt_idmap *= idmap, struct inode *dir, > struct ceph_client *cl =3D mdsc->fsc->client; > struct ceph_mds_request *req; > struct ceph_acl_sec_ctx as_ctx =3D {}; > + struct dentry *ret =3D NULL; > int err; > int op; > =20 > @@ -1166,14 +1167,20 @@ static struct dentry *ceph_mkdir(struct mnt_idmap= *idmap, struct inode *dir, > !req->r_reply_info.head->is_dentry) > err =3D ceph_handle_notrace_create(dir, dentry); > out_req: > + if (!err && req->r_dentry !=3D dentry) > + /* Some other dentry was spliced in */ > + ret =3D dget(req->r_dentry); > ceph_mdsc_put_request(req); > out: > if (!err) > + /* Should this use 'ret' ?? */ Probably? Is there a guarantee that "dentry" will even have an inode attached if it got replaced by an disconnected one in the dcache? > ceph_init_inode_acls(d_inode(dentry), &as_ctx); > else > d_drop(dentry); > ceph_release_acl_sec_ctx(&as_ctx); > - return ERR_PTR(err); > + if (err) > + return ERR_PTR(err); > + return ret; > } > =20 > static int ceph_link(struct dentry *old_dentry, struct inode *dir, --=20 Jeff Layton