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 B06B21D5CDE for ; Tue, 13 May 2025 17:27:26 +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=1747157246; cv=none; b=R1kdUGGr2o0L8P2j1EWU/0A1zMJe9a4ZmTSVqrZM+FKTczbABscfItgTHA33z6jhy+PVdmL5u+Jh2HRtiVqm9aPXaYkiLaYIRYC8psPnKRFFYMnlIa3NbNHqN6duuWWcK0Y4297wXQILB5OscukHi14ifEKcpldijAug1SlO6oU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747157246; c=relaxed/simple; bh=hZ6tHhtG1mZYhzlWwwQbG4syJ9b+/zybiKzVWHc0bJk=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=XyzZRFPVHn74yGoWuHZjctox5Atqyz/aDQ1rcpY4RReJy8osf7ZKIyvMpDxEDR1IiIQFTunrisyss+PvnLfbfNen044XhHA5sluHtqkReVkwoCnNnIQENM/mOCFiz/3IEOtcvyNByKcSMm6D6803muvjRX31WLUMupsi1NXgm7A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cVzOByO+; 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="cVzOByO+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3C33C4CEE4; Tue, 13 May 2025 17:27:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747157246; bh=hZ6tHhtG1mZYhzlWwwQbG4syJ9b+/zybiKzVWHc0bJk=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=cVzOByO++adUcPcaAJWUOKb9+XYc2K5aAtPXqjNzH6dal3dkn4qrNSZ+rNABBeGQA Q7eo/yvX5iT1sEFHNYGMbntVkf509iO9ZfAJLP8T4e7s1lSWawP+LwbrJe3SiU49ep rh01V255LBNnyT6pOLNKPGiTunlmcaizFxRly7KuUzhYefuuG18gI8UY55xiLTJS5O 99vKI18gDyIjU4VKdqt9lQgQiPy29LHFTVmfyApSAZpMJGl5bZf89KAT/5J8sS3OAC MCsZBDQMSKMc6jMJFWhnROVvVIW5J5AkGyAn/2YkeEIdAo/vDy0oA1BYcVt2EElvWt WCIzRjrcJn5vg== Message-ID: <40fcc037506a8964a836bbe9e7ece752ad67be18.camel@kernel.org> Subject: Re: [PATCH 1/1] NFSD: release read access of nfs4_file when a write delegation is returned From: Jeff Layton To: Dai Ngo , chuck.lever@oracle.com, neilb@suse.de, okorniev@redhat.com, tom@talpey.com Cc: linux-nfs@vger.kernel.org, sagi@grimberg.me Date: Tue, 13 May 2025 13:27:24 -0400 In-Reply-To: <1747152651-23087-1-git-send-email-dai.ngo@oracle.com> References: <1747152651-23087-1-git-send-email-dai.ngo@oracle.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV 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Tue, 2025-05-13 at 09:10 -0700, Dai Ngo wrote: > When a write delegation is returned, check if read access was added > to nfs4_file when client opens file with WRONLY, and release it. >=20 > Signed-off-by: Dai Ngo > --- > fs/nfsd/nfs4state.c | 9 ++++++++- > fs/nfsd/state.h | 1 + > 2 files changed, 9 insertions(+), 1 deletion(-) >=20 > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c > index 2bd63594d8da..5e47d9f85ab5 100644 > --- a/fs/nfsd/nfs4state.c > +++ b/fs/nfsd/nfs4state.c > @@ -1207,14 +1207,19 @@ nfs4_inc_and_copy_stateid(stateid_t *dst, struct = nfs4_stid *stid) > static void put_deleg_file(struct nfs4_file *fp) > { > struct nfsd_file *nf =3D NULL; > + struct nfsd_file *rnf =3D NULL; > =20 > spin_lock(&fp->fi_lock); > - if (--fp->fi_delegees =3D=3D 0) > + if (--fp->fi_delegees =3D=3D 0) { > swap(nf, fp->fi_deleg_file); > + swap(rnf, fp->fi_rdeleg_file); > + } > spin_unlock(&fp->fi_lock); > =20 > if (nf) > nfsd_file_put(nf); > + if (rnf) > + nfs4_file_put_access(fp, NFS4_SHARE_ACCESS_READ); > } > =20 > static void nfs4_unlock_deleg_lease(struct nfs4_delegation *dp) > @@ -4738,6 +4743,7 @@ static void nfsd4_file_init(const struct svc_fh *fh= , struct nfs4_file *fp) > INIT_LIST_HEAD(&fp->fi_clnt_odstate); > fh_copy_shallow(&fp->fi_fhandle, &fh->fh_handle); > fp->fi_deleg_file =3D NULL; > + fp->fi_rdeleg_file =3D NULL; > fp->fi_had_conflict =3D false; > fp->fi_share_deny =3D 0; > memset(fp->fi_fds, 0, sizeof(fp->fi_fds)); > @@ -6171,6 +6177,7 @@ nfsd4_add_rdaccess_to_wrdeleg(struct svc_rqst *rqst= p, struct nfsd4_open *open, > __nfs4_file_get_access(fp, NFS4_SHARE_ACCESS_READ); > fp =3D stp->st_stid.sc_file; > fp->fi_fds[O_RDONLY] =3D nf; > + fp->fi_rdeleg_file =3D nf; > spin_unlock(&fp->fi_lock); > } > return true; > diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h > index 1995bca158b8..8adc2550129e 100644 > --- a/fs/nfsd/state.h > +++ b/fs/nfsd/state.h > @@ -665,6 +665,7 @@ struct nfs4_file { > atomic_t fi_access[2]; > u32 fi_share_deny; > struct nfsd_file *fi_deleg_file; > + struct nfsd_file *fi_rdeleg_file; > int fi_delegees; > struct knfsd_fh fi_fhandle; > bool fi_had_conflict; Reviewed-by: Jeff Layton