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 93185296BA5; Fri, 20 Feb 2026 12:26:18 +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=1771590378; cv=none; b=NRyAiaxINeo9QKMSUqw4dLbQQtyUZrgOEOPp9aYkkiOCVctKkAOPS0GG+n8O8aLGrUc/MizFJWGr7++5KkcPptizo8t91FkE+wnUgXznejlRQ0Ud1egK5nBUgsIePE9hk3towPLSIlClzAe9CtqqZlTb3w6w6c6SH9IJz65Fkp4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771590378; c=relaxed/simple; bh=rbIVHAAbXa0rkw/T7e5ufCHQxsYBvOF8XoGc+42kKcg=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=AGX0s6mSDmNpzuPC9pnuIAA6NZA5S8+yLhdUhQLZwYZH9dXoDd/wIlvI/6L+yGpFeKam3wVTJbyDg/yRDwcZMYiounuYIVGTwXSpNLgg0i3SYxsfi7oz1nU3v130ntaOzhanXuNznW1pm/lQT1XGmsjTRnduVCyytZ1lOhfYbyw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dAkt4oMw; 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="dAkt4oMw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29DF6C116C6; Fri, 20 Feb 2026 12:26:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771590378; bh=rbIVHAAbXa0rkw/T7e5ufCHQxsYBvOF8XoGc+42kKcg=; h=From:Subject:Date:To:Cc:From; b=dAkt4oMwD8GurMIY4EcRzZphMhLt78lnyP0QI9S4Zl8kpwPG+u6zM0lKpi9yrIc/X IziV8jx1497k3/c0Qq57SzsYMjihVou427qrwuFlrbqmEnlX6VRA27f064Cjpbxh++ q7nctL90j2dF9kRyyaTzRRS4QUd8NiskYvkN0o8+/DMmZ1MhhNvvhegTJcRdObL0jl kcxIgb5XE3X7s0BmWCB7p/yN/lCcD7Q+7T/Vv0wM/3RS6gFtNgrYCKIknOrdr3Gtpp H2df0VosRL+riKfPE7w7Vb1YRKVOJqF+bBARRhWEGK/Hf4ituyGtkoSqQyvgX9P+2U qLtKFqIdCq4eg== From: Jeff Layton Subject: [PATCH 0/3] sunrpc: cache infrastructure scalability improvements Date: Fri, 20 Feb 2026 07:26:02 -0500 Message-Id: <20260220-sunrpc-cache-v1-0-47d04014c245@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x3MTQqAIBBA4avIrBP8o0VXiRYyjjkbE6UIxLsnL b/Fex0aVaYGm+hQ6eHGV57QiwBMPp8kOUyDUWZVxijZ7lwLSvSYSEZyGJxz2gYLMymVIr//bj/ G+ADULkgsXgAAAA== X-Change-ID: 20260220-sunrpc-cache-fe4cd44413d3 To: Chuck Lever , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker Cc: linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1200; i=jlayton@kernel.org; h=from:subject:message-id; bh=rbIVHAAbXa0rkw/T7e5ufCHQxsYBvOF8XoGc+42kKcg=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBpmFLjNQ2BRtGONwMJZZG/r4k522FXa/VGJjZoQ OuTmGTE4smJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaZhS4wAKCRAADmhBGVaC FaN6D/4+VDDNNG8OKafMoiqOj+nEc4EQ32kXVdVwBk9CYxLyPwW3HJxU/gbMOU1w08Xdd4Zhqs3 6FLyPCuxJNYl9HN5HLRYcEhmyoR4yfCv30QcCNc9MrDf74rMq3abI6NeuRa6WCZ5ROWZTa7Lvh7 wAiOhhC3OFb+4IaSDU6fs4zmx96X1mL36wZjVZwOkOuGpVfBi1SuA9o/ieYRQavHPG5gPJJ2+ZY sBqilrC4pb/E8iSOpE2+SxMFjaRpZzBEoq1G5h9V10kqCZkd8M5pUb35tvW4v1xporF6pkLAJb0 DIZIVB8kJVWAapGd5VZVJ4Htd6WdPuyVWXqHE1Z4Y7lxYXrpmn/eCUiaSWnV6zIJfWY/Tjxej+b Xk01j7RFJWPre0mXIJWI28SETevhJI44GP7Y1ILQXwD7GOtqwqfZPs1LRFQVHYzyrS5hrvHsd1b QRy0EbXwPoaSvJaKE7NdI41460C5oQJ8S98uo6P83XsQJ8VZ4dvjQPfgUKlGs/6lb8P38ah3gXC dDhcmcQJjTaCbL9wGDApkVHK24v/T8ZbjVZreV4krwQqCWokMBNuup+H1aMHeZtPNmqEAjvkyEE x1JXtZLm8owIdQq93gsw6FAQ7TdCtKJOMFnwIsYAzCqjCcjRNPsOltAKI8b8sU5NS729eB20WZf Cie5s7jk8D8RZiQ== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 I've been working on trying to retrofit a netlink upcall into the sunrpc cache infrastructure. While crawling over that code, I noticed that it relies on both a global spinlock and waitqueue. The first two patches convert those to be per-cache_detail instead. The last patch splits up the cache_detail->queue into two lists: one to hold cache_readers and one for cache_requests. This simplifies the code, and the new sequence number that helps the readers track position may help with implementing netlink upcalls. Please consider these for v7.1. Signed-off-by: Jeff Layton --- Jeff Layton (3): sunrpc: convert queue_lock from global spinlock to per-cache_detail lock sunrpc: convert queue_wait from global to per-cache_detail waitqueue sunrpc: split cache_detail queue into request and reader lists include/linux/sunrpc/cache.h | 7 +- net/sunrpc/cache.c | 179 +++++++++++++++++++------------------------ 2 files changed, 85 insertions(+), 101 deletions(-) --- base-commit: cca65706e7b428b96c951016fc372cc766b94b71 change-id: 20260220-sunrpc-cache-fe4cd44413d3 Best regards, -- Jeff Layton