From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CA70C3769E8 for ; Fri, 28 Aug 2026 16:18:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787933886; cv=none; b=hbMcT00EIH1Il6ttoNQnjWGp0+H8dNvjJJS2NyG2lwCAnzdeuMjzKBmrZrFCg6u9GF8U/aKNh+b+YwyzIR0hEeAHETp3niXvSmIun/mZM/mcbUwIZoSsenmnptJ4ahX2zt60L8UJlfCL2ihD2pFO8q/A+PL1AAGKhEAHdfBmrb4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787933886; c=relaxed/simple; bh=GI1ZBzQyHNPkNu3Qa5jelKXzpSPl94jl/sm5BQgLVzY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jY6lCIM8fTGGKShw8LMkFTXYPwZP2k8nd+QMjVSCv4sZJwIWNzMSvcZYOPRYT4LiLJOaqU2uDgAYhCm4s+vzfUGH5BWq58oMPxH/NU3ieUYYdLbt2WxTyjnfrjLb8vN0JGe+GoaG0ocXPmovl6u0VKqDtX/GGV2ybwG2w2OROF4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GgmIRKqv; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GgmIRKqv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 170461F00A3D; Fri, 28 Aug 2026 16:18:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787933885; bh=oZ8pXDn4gFb1/D5zwEV6+xEG/39od80K6suXjXK6J4c=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=GgmIRKqvn6itBHFU/4LI6ATD0qoVtL33x5E9kR7lgda5N6gKstFDgaDI+qEVwck+n ZlTbMcmeqHanktPGpUEGUi7vNTRL7YGqSoEa45+fv2tsoiWA2NVXi0yVLJRDE9OhTT 6kgljwN646kczdz6RsacDF5QOpXwRsCQUmGhounI+SzkhIenO8mt3wI00NRmNp2LWR KUh24dQgdrozKTo7eM7cMYG6lwO9kLmGLhxJUBGRPfrFHmD5pQYiP1g9MafS61dBn3 XiMqvgpi/KAqn3hftuvH9bS7hnzi9H8y2wOfPzr/ltUU3WXVwI5oig+9EjCjiiI2n1 hkyTh/brcJD+A== From: Chuck Lever Date: Fri, 28 Aug 2026 12:17:54 -0400 Subject: [PATCH v2 2/7] NFSD: Track transport in DRC entries Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260828-duplicate-reply-cache-v2-2-25069e660a7b@kernel.org> References: <20260828-duplicate-reply-cache-v2-0-25069e660a7b@kernel.org> In-Reply-To: <20260828-duplicate-reply-cache-v2-0-25069e660a7b@kernel.org> To: Jeff Layton , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey Cc: Rick Macklem , linux-nfs@vger.kernel.org, Chuck Lever X-Mailer: b4 0.16-dev-da966 X-Developer-Signature: v=1; a=openpgp-sha256; l=1180; i=cel@kernel.org; h=from:subject:message-id; bh=GI1ZBzQyHNPkNu3Qa5jelKXzpSPl94jl/sm5BQgLVzY=; b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBqkbS6ZLjBhW+QlaNcbrMasXBxpI2UYbTYgR5T2 6cQ0jUj/8aJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCapG0ugAKCRAzarMzb2Z/ l5HWD/9FFniifHYz1MIxDiMOuWfvMfNPzLsHONVYbnejRg26znNfNRv7s8qkvtj1w02jVIuYo59 rIHYbmGONGJPVP9zmDvnxNTtW9SdAdfKaYqW4xlSnTita+nKk5Ml2Rm7oNruQUNxSa9ti8IfPCR Fwea7uDPKFXrULbNBXbHPJW7d9EUWe6RK3vXhcfYqpj+jzwiai6on7UxbsA3C0a1kgotN5DDFUv yIXN8CM2KkaxKC2Ag2osnCyMjzNq7DtZ5agXT0WuCH+YWSNrCHXH7db6FGUYeU3JvVv6l5PpqEw fexLbEiSqenFn+dnDT562FF+uOWUeQhPV40PFoY0qqo1xr8YTxf6ptMrOuQUvpjnq1V9QhcTPWx TW2fl+sGsAaWHbjQndqkJaRDn7BPnN4OmANQaHaRUjyXlCwlMoPH5cSjMT8Rzn1YMVNvToClok4 OzLslm63poJQ1Nm24sdSjTLdsI604xVa1D9uZZEcNIqmsRT2HHiqjjrk2uGTXzNp0fLL8mhdIib cNmn2nZwLp8JMf0G/wooOipu/c+Bx9vrbodzrIqRlMTLbmRsqKw4bW9FKylpky46kCcczsBNUVC JYg1mQIcTOy8USQKYGFFOpKZ8SUhOKGc66rf7b7mGT3OD4lt7oIzyYAp9MbxJqZO3fR+oVa3Z69 iMAlj7Sap3fFMxg== X-Developer-Key: i=cel@kernel.org; a=openpgp; fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97 A cached reply carries no record of the transport its request arrived on. Transport-aware eviction needs that association. Record the xprt id in each entry. No behavior change. Signed-off-by: Chuck Lever --- fs/nfsd/cache.h | 1 + fs/nfsd/nfscache.c | 1 + 2 files changed, 2 insertions(+) diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index 3bc4856e34b8..5fbf1bc37c03 100644 --- a/fs/nfsd/cache.h +++ b/fs/nfsd/cache.h @@ -37,6 +37,7 @@ struct nfsd_cacherep { unsigned char c_state, /* unused, inprog, done */ c_type, /* status, buffer */ c_secure : 1; /* req came from port < 1024 */ + unsigned int c_xprt; /* svc_xprt that carried req */ unsigned long c_timestamp; union { struct kvec u_vec; diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 80364b91331a..b25b4f9e92f7 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -109,6 +109,7 @@ nfsd_cacherep_alloc(struct svc_rqst *rqstp, __wsum csum, rp->c_key.k_vers = rqstp->rq_vers; rp->c_key.k_len = rqstp->rq_arg.len; rp->c_key.k_csum = csum; + rp->c_xprt = rqstp->rq_xprt->xpt_id; } return rp; } -- 2.55.0