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 3FC6A1E1DE5 for ; Thu, 30 Apr 2026 08:06:45 +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=1777536405; cv=none; b=G5wLTD5bbRJ6eY3tdLuy8jKDT+PQax7p/iR2bm8mf4lDD1MrW1I23dTWQXf2zYcXMlHV6zu7W+H+3HkxBzsEluZZm6hmcA+v7LwxceaLOLZMVvjCLAQmL3CU4u688gLC0MmtE/Ls90uZmEEFjjW2AQDQSkPCARgNIOQZ6jcCF/s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777536405; c=relaxed/simple; bh=bMDGgvTwgAh4n6XGYjcgbGMrn5kxuhRrzjeAhmIiUuA=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=esVtCxv3G/8cSwAjCVqmwiq4zQ+4gRZTq10k8bC+ngkV8Gvt+RqhTE4CvsX0tttBMO4WNz/bcSCSXUleLJQs8CsIfGQbHVNrBDizRrEoBtwxmw7AtQtFdkZFJivk8+hw116ZkyytYdhL+7HoWnlgRrAdecx1ba2+bBWlTloUti0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Eu9nmh4/; 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="Eu9nmh4/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 827D9C2BCC4; Thu, 30 Apr 2026 08:06:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777536404; bh=bMDGgvTwgAh4n6XGYjcgbGMrn5kxuhRrzjeAhmIiUuA=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=Eu9nmh4/7FRCiiiH0EaOpsr89CwoaGchVmEdOJJ0+G9UyotiwI9C/Nu0nz1TigTSH pag5XZcz+qcEX51A7UvKwR5Ulg3/7D2mXwUqZ3kNdroOZjXKj8qaR7J6S+sZn/81IU nSYHiPsQM93mUdxAl7Oa5EKgYPRhlZIX2FHCwHB1JTh1xZnm9VO8eiO3GWwUFzIMY2 O7TNgxJfyuBoWIkpoh5QNZd9j68QCPbBkx4tZ60CCSzA7K3wHSW06SofmgD1DS0624 89+qEcavP2x6ec5+iU5v+uky8XvjS5pZFzV9DMvefseZGdQg+sTbZLMKa2/GMTou3D KLPzJEFaRPNAA== Message-ID: Subject: Re: [PATCH v2 05/14] fuse: refactor setting up copy state for payload copying From: Jeff Layton To: Joanne Koong , miklos@szeredi.hu Cc: bernd@bsbernd.com, axboe@kernel.dk, linux-fsdevel@vger.kernel.org, Bernd Schubert Date: Thu, 30 Apr 2026 09:06:41 +0100 In-Reply-To: <20260402162840.2989717-6-joannelkoong@gmail.com> References: <20260402162840.2989717-1-joannelkoong@gmail.com> <20260402162840.2989717-6-joannelkoong@gmail.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 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function setup_fuse_copy_state() to contain the logic > for setting up the copy state for payload copying. >=20 > Signed-off-by: Joanne Koong > Reviewed-by: Bernd Schubert > --- > fs/fuse/dev_uring.c | 38 ++++++++++++++++++++++++-------------- > 1 file changed, 24 insertions(+), 14 deletions(-) >=20 > diff --git a/fs/fuse/dev_uring.c b/fs/fuse/dev_uring.c > index cca795dd72e1..045394a7ae41 100644 > --- a/fs/fuse/dev_uring.c > +++ b/fs/fuse/dev_uring.c > @@ -639,6 +639,27 @@ static int copy_header_from_ring(struct fuse_ring_en= t *ent, > return 0; > } > =20 > +static int setup_fuse_copy_state(struct fuse_copy_state *cs, > + struct fuse_ring *ring, struct fuse_req *req, > + struct fuse_ring_ent *ent, int dir, > + struct iov_iter *iter) > +{ > + int err; > + > + err =3D import_ubuf(dir, ent->payload, ring->max_payload_sz, iter); > + if (err) { > + pr_info_ratelimited("fuse: Import of user buffer failed\n"); > + return err; > + } > + > + fuse_copy_init(cs, dir =3D=3D ITER_DEST, iter); > + > + cs->is_uring =3D true; > + cs->req =3D req; > + > + return 0; > +} > + > static int fuse_uring_copy_from_ring(struct fuse_ring *ring, > struct fuse_req *req, > struct fuse_ring_ent *ent) > @@ -654,15 +675,10 @@ static int fuse_uring_copy_from_ring(struct fuse_ri= ng *ring, > if (err) > return err; > =20 > - err =3D import_ubuf(ITER_SOURCE, ent->payload, ring->max_payload_sz, > - &iter); > + err =3D setup_fuse_copy_state(&cs, ring, req, ent, ITER_SOURCE, &iter); > if (err) > return err; > =20 > - fuse_copy_init(&cs, false, &iter); > - cs.is_uring =3D true; > - cs.req =3D req; > - > err =3D fuse_copy_out_args(&cs, args, ring_in_out.payload_sz); > fuse_copy_finish(&cs); > return err; > @@ -685,15 +701,9 @@ static int fuse_uring_args_to_ring(struct fuse_ring = *ring, struct fuse_req *req, > .commit_id =3D req->in.h.unique, > }; > =20 > - err =3D import_ubuf(ITER_DEST, ent->payload, ring->max_payload_sz, &ite= r); > - if (err) { > - pr_info_ratelimited("fuse: Import of user buffer failed\n"); > + err =3D setup_fuse_copy_state(&cs, ring, req, ent, ITER_DEST, &iter); > + if (err) > return err; > - } > - > - fuse_copy_init(&cs, true, &iter); > - cs.is_uring =3D true; > - cs.req =3D req; > =20 > if (num_args > 0) { > /* Nice cleanup. Reviewed-by: Jeff Layton