From patchwork Fri Aug 23 20:08:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13775974 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 15C44199221 for ; Fri, 23 Aug 2024 20:08:41 +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=1724443724; cv=none; b=YVo1+HHapmQBFtDBCKbE56Ke4AD0S/TxfhPqBNty7z2kMY9+6wX1JhfVruEzGdGZY5P9QyVzn2qwkCeKRBmYO1q0ZTO7PjOZZYAPJ4+aDPmBAfS2qYMPl711fvAllb1ulZPXzzgVg3os/R8I4SEU2B3cXvfRen4Rx7c4aDZewDU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724443724; c=relaxed/simple; bh=J0AzZjY++lVaELd9SlHmM+WmZKF2PT/cunGaBNDmsAE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LRyjhAMHSjdKBkDfxXBCOVw8TGDlZjyyZGeVcB3loWeIey1kJRuLzvInam0U2Y8tNVG5ALF5VT0hX8TpUCRre9E1jEdFUlQeMyd+qB7eoRfoCBcmixJ8I14FH38odpl6R1F7JhaA7iwImbzXz6mAoXK23ow0ImB01hdembi0Jwc= 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=LPdf6f7T; 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="LPdf6f7T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1724443721; 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=LPdf6f7T1WG1I9JS5lZRvkmXDLMFemq5pFu0xQNZ1yXLyg9kr+PQE5irDfmzmTHVhhCRVN nvcWjSRZQBRRVcI5/VyDORIFQxBGXR6hZjHsA0Ys3371NKFel41qRxDWaXn2gb2Xa6lbSX WCpPO9TAmE9QUDjRgvEop9LfC9eUoMk= Received: from mx-prod-mc-04.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-459-Djwg1nHIPVOepKsh7DLV1g-1; Fri, 23 Aug 2024 16:08:37 -0400 X-MC-Unique: Djwg1nHIPVOepKsh7DLV1g-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A790219560A2; Fri, 23 Aug 2024 20:08:34 +0000 (UTC) Received: from warthog.procyon.org.uk.com (unknown [10.42.28.30]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 7292D3001FE5; Fri, 23 Aug 2024 20:08:29 +0000 (UTC) From: David Howells To: Christian Brauner , Steve French Cc: David Howells , Pankaj Raghav , Paulo Alcantara , 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 1/9] mm: Fix missing folio invalidation calls during truncation Date: Fri, 23 Aug 2024 21:08:09 +0100 Message-ID: <20240823200819.532106-2-dhowells@redhat.com> In-Reply-To: <20240823200819.532106-1-dhowells@redhat.com> References: <20240823200819.532106-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: v9fs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 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] Reviewed-by: Matthew Wilcox (Oracle) --- 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;