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 4085348A8C5 for ; Thu, 10 Sep 2026 13:54:59 +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=1789048500; cv=none; b=gJbERFvgvWvPnWJ3yKWHbHLiAvqT6nU/tjW+sNci1ST5f6igEptKUhBBXNR62htIwcS7FbFA4YjUdJ3iUnH70WE1bhkUrYfV1XkMePZV0VdjOj1HqbHiIjPQfHrgxODeNajIRPL/hDhW9MtTP2ieFtUZE7USsBBmnTvkGwCbOjQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789048500; c=relaxed/simple; bh=GI1ZBzQyHNPkNu3Qa5jelKXzpSPl94jl/sm5BQgLVzY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rqn5rGYhodC/bq7x94Y+4ImL7ODIkYKHJEkllxiujEnaXD8G9qoOCKCszPle/6F/Zs/zKtPrYxJhEjtbTrPPeyozOqDare6JF80QveVQHYntt/Q9srcNY/uF8cANr0J6I/BXPNsQVFNQu7GAxrLmFtZHx+Hnc4XvYsttme6xeYk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bei41/0A; 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="bei41/0A" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8B0FC1F0089C; Thu, 10 Sep 2026 13:54:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789048499; bh=oZ8pXDn4gFb1/D5zwEV6+xEG/39od80K6suXjXK6J4c=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=bei41/0A5ZWk8Jhte/NP/O9uxyXtf6/Uz9V7vEyy7RHjNrgFSCvvRi1SfvFbsUfah sHCHjgXXoomeHq6zl1vbTyqaoC5kdwMapXT06XUdxdGt3D2a5qn23AuHrb9F7/J2hT UzBA36CmhR2B6mYH1zsFDGoaFmKhkf/9DVizGyeOJ6aLxHNh+gbkDrrQ0v7rBZ4Bk0 K7aJFx/ZxKLX6yNV742f6OsFEXe3cBSRT8rlyXhyrLPgDf6wSApccg0qYx+ArSuchg nDTsx9VvkJvhe6RFxvYZGMfqhTYR7qjFPJwF7SeafmrlbmvLa+FkTwtyVa56DDaqm+ iAmAwRfMoUDxA== From: Chuck Lever Date: Thu, 10 Sep 2026 09:54:42 -0400 Subject: [PATCH v3 02/12] 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: <20260910-duplicate-reply-cache-v3-2-31532a4c7449@kernel.org> References: <20260910-duplicate-reply-cache-v3-0-31532a4c7449@kernel.org> In-Reply-To: <20260910-duplicate-reply-cache-v3-0-31532a4c7449@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+XAcsmYgBqoravByMsRh7e/1rhgpY2LhkJzzrt9pr0eqHMB rzHSCRCh72JAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaqK2rwAKCRAzarMzb2Z/ lz1aEACDKqbqe5wbvsI2IM65pRtjgA0j7UiW2QBrL5irfmA858xnyJ7MXlTXBHrabYL2EvN3xKQ 2piVlz0mAX6VRCcNCBrB7CXTWnGvtXM7oO8mnuaHty50xiYchj3+PJm8yS4ASX8bVb43o3BX0a3 KiibyxHda4LlWIp+PPsjpTUvA78k5GrLgl52hU6uynAx6rFnZE0rXwPtb6s8TA3EK+xgm1oROdy p4NRnJ/Z/f2+wK0gshx6GscVo/X1LgMtuu6yrW2osgDA8YyV9fK2/rf6YMK+b2DY9cNNkpyXXor Q93Z0SjbMO1p5MFe6xgsrykyaz/dNbxSQfacE072AJ7y8u/W/pnAH0Qiw5et7XCUwqsgYVcQ212 XUIQ2mojKA1B/lwsLB+N0mICbrecYvnF6dzJIEzijm9dB8HGA1xDCs7ha3i/se9WkZuVoVtxmr1 HmTY7fuh2hxzTxFp6jL4InD7RhZILweawIY9SQ/YEnyzRoPwy7kPCCc1GWbsz1EhE4J8mKo3Dqh 4fBFGyd03dHOaFLRB+BKnap2JnR5Lot8lTxGWRXW+pKQdXDTKeJQNQtPdcJoHP+Oz/XKXTR8b4o BHnuThM7z3ueewA/SO7DZO7wHmJVJyX9sgi7UFHqhO8hu7bkcns8unPlB/dRmGD0I5CSa0LT+qb Ze8ilzaaN8BQmMQ== 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