[{"id":3679948,"web_url":"http://patchwork.ozlabs.org/comment/3679948/","msgid":"","list_archive_url":null,"date":"2026-04-21T15:26:30","subject":"Re: [PATCH v2 2/7] cifs: abort open_cached_dir if we don't request\n leases","submitter":{"id":86063,"url":"http://patchwork.ozlabs.org/api/people/86063/","name":"Bharath SM","email":"bharathsm.hsk@gmail.com"},"content":"On Mon, Apr 20, 2026 at 11:40 PM wrote:\n>\n> From: Shyam Prasad N \n>\n> It is possible that SMB2_open_init may not set lease context based\n> on the requested oplock level. This can happen when leases have been\n> temporarily or permanently disabled. When this happens, we will have\n> open_cached_dir making an open without lease context and the response\n> will anyway be rejected by open_cached_dir (thereby forcing a close to\n> discard this open). That's unnecessary two round-trips to the server.\n>\n> This change adds a check before making the open request to the server\n> to make sure that SMB2_open_init did add the expected lease context\n> to the open in open_cached_dir.\n>\n> Cc: \n> Signed-off-by: Shyam Prasad N \n> ---\n> fs/smb/client/cached_dir.c | 7 +++++++\n> 1 file changed, 7 insertions(+)\n>\n> diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c\n> index 04bb95091f498..e9917e5204b00 100644\n> --- a/fs/smb/client/cached_dir.c\n> +++ b/fs/smb/client/cached_dir.c\n> @@ -286,6 +286,13 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,\n> &rqst[0], &oplock, &oparms, utf16_path);\n> if (rc)\n> goto oshr_free;\n> +\n> + if (oplock != SMB2_OPLOCK_LEVEL_II) {\n> + rc = -EINVAL;\n> + cifs_dbg(FYI, \"unexpected oplock level %d for cached directory\\n\", oplock);\nShould we reword the log from \"'unexpected' oplock level for cached\ndirectory\" to something like\nlease not available for cached dir.? Considering the client itself\nmight be disabling oplock temporarily.\n\"unexpected\" might look misleading.\n\n> + goto oshr_free;\n> + }\n> +\n> smb2_set_next_command(tcon, &rqst[0]);\n>\n> memset(&qi_iov, 0, sizeof(qi_iov));\n\nOther than the above minor comment, Changes look good to me.\nReviewed-by: Bharath SM ","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=AL8sndUb;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; helo=sin.lore.kernel.org;\n envelope-from=linux-cifs+bounces-10988-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"AL8sndUb\"","smtp.subspace.kernel.org;\n arc=pass smtp.client-ip=74.125.224.46","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from sin.lore.kernel.org (sin.lore.kernel.org [104.64.211.4])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g0RFH0W0bz1yGt\n\tfor ; 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Tue, 21 Apr 2026\n 08:26:41 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-cifs@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"<20260421063955.99164-1-sprasad@microsoft.com>\n <20260421063955.99164-2-sprasad@microsoft.com>","In-Reply-To":"<20260421063955.99164-2-sprasad@microsoft.com>","From":"Bharath SM ","Date":"Tue, 21 Apr 2026 08:26:30 -0700","X-Gm-Features":"AQROBzCohKFBLFtob7mlCVxxtoiPObLo3LCBJqTRkUUEkaO51_Su7hdh5BVHQMc","Message-ID":"\n ","Subject":"Re: [PATCH v2 2/7] cifs: abort open_cached_dir if we don't request\n leases","To":"nspmangalore@gmail.com","Cc":"linux-cifs@vger.kernel.org, smfrench@gmail.com, pc@manguebit.org,\n\tbharathsm@microsoft.com, dhowells@redhat.com, henrique.carvalho@suse.com,\n\tematsumiya@suse.de, Shyam Prasad N ,\n stable@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}},{"id":3681768,"web_url":"http://patchwork.ozlabs.org/comment/3681768/","msgid":"","list_archive_url":null,"date":"2026-04-24T04:06:43","subject":"Re: [PATCH v2 2/7] cifs: abort open_cached_dir if we don't request\n leases","submitter":{"id":79368,"url":"http://patchwork.ozlabs.org/api/people/79368/","name":"Shyam Prasad N","email":"nspmangalore@gmail.com"},"content":"On Tue, Apr 21, 2026 at 8:56 PM Bharath SM wrote:\n>\n> On Mon, Apr 20, 2026 at 11:40 PM wrote:\n> >\n> > From: Shyam Prasad N \n> >\n> > It is possible that SMB2_open_init may not set lease context based\n> > on the requested oplock level. This can happen when leases have been\n> > temporarily or permanently disabled. When this happens, we will have\n> > open_cached_dir making an open without lease context and the response\n> > will anyway be rejected by open_cached_dir (thereby forcing a close to\n> > discard this open). That's unnecessary two round-trips to the server.\n> >\n> > This change adds a check before making the open request to the server\n> > to make sure that SMB2_open_init did add the expected lease context\n> > to the open in open_cached_dir.\n> >\n> > Cc: \n> > Signed-off-by: Shyam Prasad N \n> > ---\n> > fs/smb/client/cached_dir.c | 7 +++++++\n> > 1 file changed, 7 insertions(+)\n> >\n> > diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c\n> > index 04bb95091f498..e9917e5204b00 100644\n> > --- a/fs/smb/client/cached_dir.c\n> > +++ b/fs/smb/client/cached_dir.c\n> > @@ -286,6 +286,13 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,\n> > &rqst[0], &oplock, &oparms, utf16_path);\n> > if (rc)\n> > goto oshr_free;\n> > +\n> > + if (oplock != SMB2_OPLOCK_LEVEL_II) {\n> > + rc = -EINVAL;\n> > + cifs_dbg(FYI, \"unexpected oplock level %d for cached directory\\n\", oplock);\n> Should we reword the log from \"'unexpected' oplock level for cached\n> directory\" to something like\n> lease not available for cached dir.? Considering the client itself\n> might be disabling oplock temporarily.\n> \"unexpected\" might look misleading.\n\nHi Bharath,\nThanks for the review. Will make the change.\n\n>\n> > + goto oshr_free;\n> > + }\n> > +\n> > smb2_set_next_command(tcon, &rqst[0]);\n> >\n> > memset(&qi_iov, 0, sizeof(qi_iov));\n>\n> Other than the above minor comment, Changes look good to me.\n> Reviewed-by: Bharath SM ","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=M9RbQ45/;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; helo=tor.lore.kernel.org;\n envelope-from=linux-cifs+bounces-11076-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"M9RbQ45/\"","smtp.subspace.kernel.org;\n arc=pass smtp.client-ip=209.85.208.41","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g1ztZ3xHtz1yD5\n\tfor ; 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Thu, 23 Apr 2026\n 21:06:55 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-cifs@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"<20260421063955.99164-1-sprasad@microsoft.com>\n <20260421063955.99164-2-sprasad@microsoft.com>\n ","In-Reply-To":"\n ","From":"Shyam Prasad N ","Date":"Fri, 24 Apr 2026 09:36:43 +0530","X-Gm-Features":"AQROBzAJ-73VnnQjn9jxamNohqWFvDhzqHJpUDI2Ld9Tk85kL8Hk85ywSY7ptQk","Message-ID":"\n ","Subject":"Re: [PATCH v2 2/7] cifs: abort open_cached_dir if we don't request\n leases","To":"Bharath SM ","Cc":"linux-cifs@vger.kernel.org, smfrench@gmail.com, pc@manguebit.org,\n\tbharathsm@microsoft.com, dhowells@redhat.com, henrique.carvalho@suse.com,\n\tematsumiya@suse.de, Shyam Prasad N ,\n stable@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}}]