From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-184.mta0.migadu.com (out-184.mta0.migadu.com [91.218.175.184]) (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 697A842BE87 for ; Tue, 4 Aug 2026 04:14:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.184 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785816844; cv=none; b=rtjEy1UxHanXhyfj0ZaGmHLcS1bXowwTF/6kxeAePDidebuPArnfoCscDMo6cYqMW8Wwo/6+uDrlK4WrzpXwwCIQRCKOBzW5JPb1E0J5pbSyOegPXBjB9xp8TIYPJRUfci1+L6o63fJou6DCfdL45QL6BgBN6cJ3WOwEn7kcklM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785816844; c=relaxed/simple; bh=QgyXbajf8k1ouWp76clM/q24oXyH9GRpwK55eN5BX+U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=As+BRwh8CZPqrCM66gd1pihKviFyFQThfGY+/+4Lebzg+7598m0H+sZz0q5AvqnPnqHcdS/pe0SmTh6y/gtrBr0mKksG1at7gy6nAj9O/25rG4Y7Jv3m0u3hV2zzv4cL4v2LTXGLPhmiac/Ll+F5BRPy7VMfPRvzMKHd3BslNcg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=XZGsiXYc; arc=none smtp.client-ip=91.218.175.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="XZGsiXYc" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1785774947; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vkrn64K2O1qrTL7hm4UrLcILaI10/JPPjTcY5a64cWM=; b=XZGsiXYcTF3XNAplQQEQg5zT+sto4CSZeNb19L2IxkUDWNIpEz84q8NdGbCovZiM0sDaFf GOGvaUr8LlxoRwpuB3LdqCZ5xg88BASLPs4bE6YurjydslxV9RK5vE3BzsOrrdMnfQAHAf Tc67SMfPGB2odqYPxVlGOnWyuJpvQYg= Date: Mon, 3 Aug 2026 17:35:41 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH] squashfs: avoid thundering-herd cache wakeups To: Phillip Lougher , Andrew Morton , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, squashfs-devel@lists.sourceforge.net Cc: brauner@kernel.org, hannes@cmpxchg.org, shakeel.butt@linux.dev, jlayton@kernel.org, boris@bur.io, riel@surriel.com, kernel-team@meta.com References: <20260724190556.1950693-1-usama.arif@linux.dev> <664bff99-ef20-44b9-9c5f-aa6c8755133e@linux.dev> <20f40e87-02b8-4714-b417-2730f304d624@squashfs.org.uk> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Usama Arif In-Reply-To: <20f40e87-02b8-4714-b417-2730f304d624@squashfs.org.uk> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT On 03/08/2026 15:43, Phillip Lougher wrote: > On 03/08/2026 11:16, Usama Arif wrote: >> > >> >> Hi, >> >> Just wanted to check if there are any reviews or comments on this patch? >> >> It is attempting to solvie a real thundering herd problem we see in our fleet. >> It also doubles throughput for small file reads and stat for squashfs. >> >> Thanks, >> Usama >> >> > > I have been on vacation.  I will review it this week. > No worries! Thank you! Usama