From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.79 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793917504; b=YCi0MHJeL14XQUPr5nZ/VqMFr4quJjL7mZyQGnTA8/aBokf0zz2Ov9NH4FfAYYSvPrlq CJ8pwrbAc9xCGcekHkv7wZB3Kda78XvbF8yTDuss3UrDGvf9BuPrvO1Txj4h0SybDEnKe gFEZH/GtvRZiVm/iTedQ6TEOjD04f/n8KH19rKG5BHgktGvaExHl3bGuLq6+7doD5CBHU I3j5Irm4ssYxgNWf6IoLbcBUOojwR79EV5yV13q4JY3YqVSgZLWgoAg0GuRnHIjzy3Jb3 oR0rJHEgPZU4BIwYcCorW2CFgVJPOP2HD+p6wNum4GlJcpEhHVARZtwtPna2EHZqgqw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793917504; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=aC+qtiKQ023bm9o1O7eQng0BAlQQoW+kw14Srbp6hgo=; b=av9nxkBRn9t60B4wXQ3yn84OZA/OmbAFW0C303z34QQxcCHh0/pVL4KWLev18YpK3aa6 pRZTNL8VtYqzo+AjdfNf+PzqXVIpbJyofBcqBPtM8+LioayusxveNEDdHypl0Vq7f/i1r ef1njRCtc2MbxcYiBSoZ1F2ydEcUtl5+h0NPbdlx/rCXKRY2Yt5NRemniyCqAzkPdINTo VJQsMELC2BZyZKQ70QhAsABWJiYQOTVtVUhktelSpL1ipM2hl5fUN1+9t3KTPZkafh8E1 Ol0c4v1KHI0gr233863Wj904lbFHdwZPgHkkFSigh/Mkj/eW/boY0JOsN8hFQJvkeZg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=AYAz30az; arc=none smtp.remote-ip=91.218.175.79 Received: from mta0.migadu.com (out-79.mta0.migadu.com [91.218.175.79]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A414606A31B for ; Thu, 5 Nov 2026 22:25:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 5A414606A31B 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, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=AYAz30az X-Envelope-To: stable@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=aC+qtiKQ023bm9o1O7eQng0BAlQQoW+kw14Srbp6hgo=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1793917501; v=1; x=1794522301; b=AYAz30azCfWtJi1XhwIimMgcURpfEy0+zG0xXZfrF+xJ9lC7/lJRwLDrYqh/z84ZwQmtQxLH Hgq8aN7d3+vkw4FG9a47NnQYU6U9wdbWU1Ncmtm9O5bQOVgE+zY58jOtFPOQR6VkJqNwwZnS6zZ vLrR3kMTUDPyka59IQFTAWg0= X-Envelope-To: stable@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 204d4cc12b5d9ed2; Thu, 05 Nov 2026 22:25:00 +0000 X-Mizu-Trace-ID: 204d4cc12b5d9ed2 X-Migadu-Flow: FLOW_OUT Date: Thu, 5 Nov 2026 22:24:54 +0000 From: "Jose Fernandez (Anthropic)" To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , Jan Kara , David Hildenbrand , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Krystian Kaniewski , stable@vger.kernel.org Subject: Re: [PATCH v2] mm/filemap: stop fault-around when the walk steps back Message-ID: References: <20261031-jf-mm-filemap-map-pages-lower-bound-v2-1-21029744e589@linux.dev> <20261102092750.e53073b2c7b872f9d70c0711@linux-foundation.org> <20261105-jf-filemap-v2-akpm-testedby-reply-r1-36ef39856b46@linux.dev> X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261105-jf-filemap-v2-akpm-testedby-reply-r1-36ef39856b46@linux.dev> On Thu, 5 Nov 2026 22:13:34 +0000, Jose Fernandez wrote: > I ran it under the stress test from my reply to Pedro in this thread. I also ran the check_multi_find_4 test that comes with the patch. It fails without the fix and passes with it. The stress test only ran with the fix applied. - Jose