From nobody Tue Apr 7 05:42:06 2026 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 225A73A1A3F; Mon, 16 Mar 2026 15:15:17 +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=1773674117; cv=none; b=RBj1I9Oyf2kWcir2cJM2stP49U1uJMmSxz7ZiGTnAOK5lamuSTjn0Bxm6sdyBr7xqN45XoAkjUzXLgia6kkjLR9s7FwgDz4/zGdGwePExj3dp5iyalw4El9YcL/Boup5WVNgy4Pu6KL6tJ6ka3CzWZeYXzGDPMUuk1TtEi8t5Zc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773674117; c=relaxed/simple; bh=GBY2gRkFAZM9XwvOjqnzxklHseW2P36+SjSSJPoy2cw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jSJ8TjBMLnXPghgwlkbed9bkpXiVgAVlEpcrX0aj3FEJ4BADkBiv4E3FqoqxNU9/7mKj9Zdhe5/SaAyaQnvuXCHhWUSTgoqeKt/lCc9hg4LK2GLZ1XblAGPzaKFhTaiyxIIQ2aeBuya/Vbh0V9ibsoukvVgOfOqrK5ayrcmCcMY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cB5kROMl; 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="cB5kROMl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1EF00C2BCB2; Mon, 16 Mar 2026 15:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773674117; bh=GBY2gRkFAZM9XwvOjqnzxklHseW2P36+SjSSJPoy2cw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=cB5kROMlU7UOftvc/9KDCVdXnwdRebVy/I0JEc+ZyQbRcktrQ+F9r5Aj9hYx7P6RR 6CUppoQANwe46j6a6jp9YG5WosIG4UyKpmMMPJy/wpVIf5kfnFRSmvkGgpmL39CTLK JXsDBW0Ck7OX1cRp0cy/UvwgRrjvCwJjKr5EWUc1IgNoTRTPwB2D3VqbSZi1HMVYzD 2MINfsvCImj8xwlHV/VdJ1Z5OSBlRPM0OJgrOWT36x45sNGPFtZFlBM8065XwqQU+o v1KIssukD0giIcurn8MEAzVbLOHrmECsNEUJJZlXO70kyJfhLgmH3V/POTD6waeMnr tuJH1vylv1yxQ== From: Jeff Layton Date: Mon, 16 Mar 2026 11:14:39 -0400 Subject: [PATCH 05/14] sunrpc: add a cache_notify callback 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: quoted-printable Message-Id: <20260316-exportd-netlink-v1-5-6125dc62b955@kernel.org> References: <20260316-exportd-netlink-v1-0-6125dc62b955@kernel.org> In-Reply-To: <20260316-exportd-netlink-v1-0-6125dc62b955@kernel.org> To: Chuck Lever , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey Cc: Trond Myklebust , Anna Schumaker , 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=1715; i=jlayton@kernel.org; h=from:subject:message-id; bh=GBY2gRkFAZM9XwvOjqnzxklHseW2P36+SjSSJPoy2cw=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBpuB574PtozW+tMf3NB2jAg9fVS9f2DLJNG0P6c 006MGdR0EGJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCabgeewAKCRAADmhBGVaC FZdlEACFwAc86uZLqNE8pJA6RscNRlFFg++4gjJLNLyvq+cwKsKCusXsRYD5VCXA0F+iTUItHNk QeHl4TN2xTjM7dBFAtdXqUyozlQ2zenw9RQsmkTGhLj+8fTfH/Vbgqx34M+KLRzUQKstnvQXpHt DEAizU8PqjYsSPO+wAorfkx7I4LEINyQuC4bY5IU9XJq65zBz+Q6bKZJedkCLDO6vnWwpkIsB4P s+9zVQ/dgFQcCBx139ZVgyYOeS+3V9sObZdKADsPk96a+QJuo0jiO/Hy8dJLAL6hSDI43HZK76C ZtHBAW8mMIdUpHbs1PrN6yNq7O7zI9vJjZ4m2Eddq7eMch5O3wU1tFk0MzvaC9DwR33zrzVNGjT Ib+BIrBDRabxG9KaLrE91UNzBKbNOyjnZuw+UMW1GhaQr3KTtmHc6+uuaS4r3mHYE9yYqg3zQZM U605kWhsnNsoE5VwnGPT/lRedizolpaaZ5c9sS8JAbrdr5ZrVCWVO4s87TYdVW5fOom5rRc3Yjn GSxoepO0fdK3+YpZonDKqLRgdpbTcFXlx5c7M/Nbj48sRv4Ul8A+yO/olceb4aQwSgHogX4mK+i rjFUjaADON+0VJXNDR2fuTW/RMIKLC7lxCXGRTNXVmcGz+3xCm3Ut1e84IR3d22qfFWzyXojhaN 7wa4C0ng4Dps/iQ== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 A later patch will be changing the kernel to send a netlink notification when there is a pending cache_request. Add a new cache_notify operation to struct cache_detail for this purpose. Signed-off-by: Jeff Layton --- include/linux/sunrpc/cache.h | 3 +++ net/sunrpc/cache.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index 80a3f17731d8fbc1c5252a830b202016faa41a18..c358151c23950ab48e83991c613= 8bb7d0e049ace 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -80,6 +80,9 @@ struct cache_detail { int (*cache_upcall)(struct cache_detail *, struct cache_head *); =20 + int (*cache_notify)(struct cache_detail *cd, + struct cache_head *h); + void (*cache_request)(struct cache_detail *cd, struct cache_head *ch, char **bpp, int *blen); diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index 7081b6e0e9090d2ba7da68c1f36b4c170fb228cb..819f12add8f26562fdc6aaa200f= 55dec0180bfbc 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -33,6 +33,7 @@ #include #include #include +#include #include =20 #include "netns.h" @@ -1239,6 +1240,8 @@ static int cache_do_upcall(struct cache_detail *detai= l, struct cache_head *h) /* Lost a race, no longer PENDING, so don't enqueue */ ret =3D -EAGAIN; spin_unlock(&detail->queue_lock); + if (detail->cache_notify) + detail->cache_notify(detail, h); wake_up(&detail->queue_wait); if (ret =3D=3D -EAGAIN) { kfree(buf); --=20 2.53.0