From nobody Sun Apr 5 13:06:02 2026 Received: from e3i468.smtp2go.com (e3i468.smtp2go.com [158.120.85.212]) (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 451F6307AE3 for ; Tue, 24 Mar 2026 20:03:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=158.120.85.212 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774382632; cv=none; b=gektY/k6abUIyiEUZvc0d5ycW/LffX6pJJZs+9Cxvs7FYmUyluSOK73kBmgYxEAoEAoF2Qr3X4pi0DfGli6cfKiC6HdIGPGM4x0/YE10bH5kZvOaYmtV2c/x/PbVZLWg95Ou0786zdn/FAo5W2rB8AinRERqtljxuoNGRPC+61M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774382632; c=relaxed/simple; bh=gSqiHBC8YoUX5EkH3JCIKah5749u/zPS3n5f8J2P/jo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o2AgcXja9mqyVHRzH4Szt3eWEqpeyrbSfb+O2fAMvNSQf2cMnvTFwCVI2FSKUnPa/K89ZMxLnM3aIXYy04jFPSxUsRT6FTSvEHIM+EO0CwfSDWw+Th26IRQSdMj4mzLBvRQvbYmtLJDviJiTO2GjbuRwKzekWlpdm0farNvZWO4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=triplefau.lt; spf=pass smtp.mailfrom=em510616.triplefau.lt; dkim=pass (2048-bit key) header.d=triplefau.lt header.i=@triplefau.lt header.b=jC3EPt99; arc=none smtp.client-ip=158.120.85.212 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=triplefau.lt Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=em510616.triplefau.lt Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=triplefau.lt header.i=@triplefau.lt header.b="jC3EPt99" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=triplefau.lt; i=@triplefau.lt; q=dns/txt; s=s510616; t=1774382627; h=from : subject : to : message-id : date; bh=Q5XeYb3NItq0q8BeTQJa6q2tBtl1wKIGG37yUzrloyk=; b=jC3EPt999s+HFzz7Pv3jAz8cjyfdCZWHdYZu9qFh6DMut9U4XsJzmD/uHLkFc27VVZgzn KJRbqFvTYaf9MgimAFgcJIQa5yZgM3CpMCOwzi6aXuAt/vGCozwTdpRKMmHanZ9NmvZLfzM ScWLc0I4bkLl4ZDYonAf727mEhVx6OvkLXh+9YjI47h+SyhoCPHgJmxwFNxLVMiTJmw16u9 yKXLQu0XcHAbpWojz/J/uwlUYl54ryWeh6Z9AzPlVTEOYePcoPUQn1PTH0eExJwJqwMnuzJ MuSsGUd6WYxzc1T2j82jLbbfbWuk7ovytjl0q3Q5YIWz08xEf82Ev66bl0Vg== Received: from [10.12.239.196] (helo=localhost) by smtpcorp.com with esmtpsa (TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.99.1-S2G) (envelope-from ) id 1w57yU-4o5NDgrkYbV-pWp0; Tue, 24 Mar 2026 20:03:38 +0000 From: Remi Pommarel To: v9fs@lists.linux.dev Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , Remi Pommarel Subject: [PATCH v4 3/4] 9p: Set default negative dentry retention time for cache=loose Date: Tue, 24 Mar 2026 20:43:33 +0100 Message-ID: X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Report-Abuse: Please forward a copy of this message, including all headers, to Feedback-ID: 510616m:510616apGKSTK:510616seTnygqtFL X-smtpcorp-track: ZX5Ep7xmsHwL.vMI06RHj-g2x.muw5RAeJNgk Content-Type: text/plain; charset="utf-8" For cache=3Dloose mounts, set the default negative dentry cache retention time to 24 hours. Signed-off-by: Remi Pommarel --- fs/9p/v9fs.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index f16517be7fc2..79b6a8b82779 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -24,6 +24,9 @@ #include "v9fs_vfs.h" #include "cache.h" =20 +/* cache=3Dloose default negative dentry retention time is 24hours */ +#define CACHE_LOOSE_NDENTRY_TIMEOUT_DEFAULT (24 * 60 * 60 * 1000) + static DEFINE_SPINLOCK(v9fs_sessionlist_lock); static LIST_HEAD(v9fs_sessionlist); struct kmem_cache *v9fs_inode_cache; @@ -437,6 +440,13 @@ static void v9fs_apply_options(struct v9fs_session_inf= o *v9ses, v9ses->uid =3D ctx->session_opts.uid; v9ses->session_lock_timeout =3D ctx->session_opts.session_lock_timeout; v9ses->ndentry_timeout_ms =3D ctx->session_opts.ndentry_timeout_ms; + + /* If negative dentry timeout has not been overridden set default for + * cache=3Dloose + */ + if (!(v9ses->flags & V9FS_NDENTRY_TIMEOUT_SET) && + (v9ses->cache & CACHE_LOOSE)) + v9ses->ndentry_timeout_ms =3D CACHE_LOOSE_NDENTRY_TIMEOUT_DEFAULT; } =20 /** --=20 2.52.0