From mboxrd@z Thu Jan 1 00:00:00 1970 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 D5D7548096E for ; Tue, 28 Apr 2026 13:19:51 +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=1777382393; cv=none; b=ZG8r1UOHkkOdv7e4LsJuebLSYTpOV9DnuWz5m96LYpBnVHYDg7btvA6QjEUIDq8xZTrB3lKfdTEtuOIBBBQ5HSoGV6LA0Kgx+14UFGUfRPsu2bAdpfl/vIsr9p0ZklnEuQ7WM1+f/3qc+OOZQCmMp3DGsxArWRC80xx6zGDdmUg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777382393; c=relaxed/simple; bh=SrENox9QMrVI+/91R6omN9IfnXfzBhr5V2WP6gv3vV0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:content-type; b=FUtnJfgbrzE7E2KiX62p1qn3oQW2nupoXo2kbe4NYnVAoeuuJciF9q/qDq7Fdhj/2oZ9a2tMKcE9Ts9hXY5L1DlwW3TBKcMxHYzpz3B1ol8eKi/CPBw2LBKEBqYqtPp/ETZ2w+fd+82nBSLqIFFd4eUjhB1LzXYaba0oStXbmFs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine 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=Fw18M4m/; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine 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="Fw18M4m/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1777382390; 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=zM9/5VMpPNkYtZBpulQv1ZMjXnFjfbGB90wD/QTCvo0=; b=Fw18M4m/xoGUQoBin1oLWy7jM1Ej7saoy/I1JJJGOjVz9g/A2RcgmsB9Z/4isLQZOAVjy5 vPKX4WRjdlg3qyAo9xu3PGpMQGU4mK1+jP9fIoe0sUeaGqcf46sT4cf9/5JFltEChMC23a rztiohzo7wmpcq4OIzQEPi2cVuAAbto= Received: from mx-prod-mc-03.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-479-Hm7vc0ESPOWdLCKrRKKyHQ-1; Tue, 28 Apr 2026 09:19:45 -0400 X-MC-Unique: Hm7vc0ESPOWdLCKrRKKyHQ-1 X-Mimecast-MFC-AGG-ID: Hm7vc0ESPOWdLCKrRKKyHQ_1777382383 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3821319774E1; Tue, 28 Apr 2026 13:19:39 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.44.32.126]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 063C1195608E; Tue, 28 Apr 2026 13:19:35 +0000 (UTC) From: David Howells To: Christian Brauner Cc: David Howells , Paulo Alcantara , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Matthew Wilcox Subject: [PATCH v5 20/24] netfs: Fix partial invalidation of streaming-write folio Date: Tue, 28 Apr 2026 14:17:50 +0100 Message-ID: <20260428131756.922303-21-dhowells@redhat.com> In-Reply-To: <20260428131756.922303-1-dhowells@redhat.com> References: <20260428131756.922303-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: netfs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Mimecast-MFC-PROC-ID: _VWxIWIrIhbXBn8aI5SzKMf2cGjTtDUgV5gGanKX5g4_1777382383 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true In netfs_invalidate_folio(), if the region of a partial invalidation overlaps the front (but not all) of a dirty write cached in a streaming write page (dirty, but not uptodate, with the dirty region tracked by a netfs_folio struct), the function modifies the dirty region - but incorrectly as it moves the region forward by setting the start to the start, not the end, of the invalidation region. Fix this by setting finfo->dirty_offset to the end of the invalidation region (iend). Fixes: cce6bfa6ca0e ("netfs: Fix trimming of streaming-write folios in netfs_inval_folio()") Closes: https://sashiko.dev/#/patchset/20260414082004.3756080-1-dhowells%40redhat.com Signed-off-by: David Howells cc: Paulo Alcantara cc: Matthew Wilcox cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- fs/netfs/misc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/netfs/misc.c b/fs/netfs/misc.c index 9fd41a97f83d..14565719b6a2 100644 --- a/fs/netfs/misc.c +++ b/fs/netfs/misc.c @@ -255,7 +255,7 @@ void netfs_invalidate_folio(struct folio *folio, size_t offset, size_t length) goto erase_completely; /* Move the start of the data. */ finfo->dirty_len = fend - iend; - finfo->dirty_offset = offset; + finfo->dirty_offset = iend; trace_netfs_folio(folio, netfs_folio_trace_invalidate_front); return; }