From patchwork Tue Aug 20 23:20:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13770640 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 153031C825D for ; Tue, 20 Aug 2024 23:21:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724196090; cv=none; b=kG344k1ABdeQbk+wSnnk9X9xrVohVTNVgtrv/FE70CIW9maWznmw+RxnYCAVCh/s2um34Cuz46VF4PB3somY6FCWIzrj6CJc/PfOtYa3tLDc71xYpUssX/kOjW7cU+CISB1uax7lRYFWeYEwPYDWRQMsW5MWxshhHQtdZr0dP3s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724196090; c=relaxed/simple; bh=J0AzZjY++lVaELd9SlHmM+WmZKF2PT/cunGaBNDmsAE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nhqnqmf/5iA8e2hMNAyMferlsOQvLWe1EHkx8KIhKxGe2svLEclfb0/Ncu3U1jo5RMPsU3nqdBHV5xL9DCy6FX1WIZ/DgaIx+1g3iT9zZrYwml1ZdX4AVwMhkpN39I33FdWh+3MwoxIB6pd82MW65V9q1AjFWL5o7AKQpLtRWQw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=HfNARwPO; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="HfNARwPO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1724196088; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i1WfTcBSz40dFfs4YPek5T5SHQcjJbpn4yprFOLb05E=; b=HfNARwPOrZ1QjDDz7F+L6XRu5/fbc1oqKOPejC3gLKxjsrYtMmFZnHlJzIqnzs5nIgkUdK FulJEKARDt87SetIzbBe8MFk8eCYYyeIOlfvBPYOP3z3CZMfz60aTyWgXpgg1WjRMiFBK5 AuYdb3v/hm7g5gVe+kwuBlM2wIXWJtI= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-515-qlsSCgy2P9econK9DfSahQ-1; Tue, 20 Aug 2024 19:21:23 -0400 X-MC-Unique: qlsSCgy2P9econK9DfSahQ-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id EBEED1955D48; Tue, 20 Aug 2024 23:21:19 +0000 (UTC) Received: from warthog.procyon.org.uk.com (unknown [10.42.28.30]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 8A1AE1955E8C; Tue, 20 Aug 2024 23:21:14 +0000 (UTC) From: David Howells To: Christian Brauner Cc: David Howells , Pankaj Raghav , Jeff Layton , Matthew Wilcox , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Marc Dionne Subject: [PATCH 1/4] mm: Fix missing folio invalidation calls during truncation Date: Wed, 21 Aug 2024 00:20:55 +0100 Message-ID: <20240820232105.3792638-2-dhowells@redhat.com> In-Reply-To: <20240820232105.3792638-1-dhowells@redhat.com> References: <20240820232105.3792638-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: ceph-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 When AS_RELEASE_ALWAYS is set on a mapping, the ->release_folio() and ->invalidate_folio() calls should be invoked even if PG_private and PG_private_2 aren't set. This is used by netfslib to keep track of the point above which reads can be skipped in favour of just zeroing pagecache locally. There are a couple of places in truncation in which invalidation is only called when folio_has_private() is true. Fix these to check folio_needs_release() instead. Without this, the generic/075 and generic/112 xfstests (both fsx-based tests) fail with minimum folio size patches applied[1]. Fixes: b4fa966f03b7 ("mm, netfs, fscache: stop read optimisation when folio removed from pagecache") Signed-off-by: David Howells cc: Matthew Wilcox (Oracle) cc: Pankaj Raghav cc: Jeff Layton cc: Marc Dionne cc: linux-afs@lists.infradead.org cc: netfs@lists.linux.dev cc: linux-mm@kvack.org cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240815090849.972355-1-kernel@pankajraghav.com/ [1] --- mm/truncate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/truncate.c b/mm/truncate.c index 4d61fbdd4b2f..0668cd340a46 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -157,7 +157,7 @@ static void truncate_cleanup_folio(struct folio *folio) if (folio_mapped(folio)) unmap_mapping_folio(folio); - if (folio_has_private(folio)) + if (folio_needs_release(folio)) folio_invalidate(folio, 0, folio_size(folio)); /* @@ -219,7 +219,7 @@ bool truncate_inode_partial_folio(struct folio *folio, loff_t start, loff_t end) if (!mapping_inaccessible(folio->mapping)) folio_zero_range(folio, offset, length); - if (folio_has_private(folio)) + if (folio_needs_release(folio)) folio_invalidate(folio, offset, length); if (!folio_test_large(folio)) return true;