From patchwork Fri Aug 25 20:12:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 716901 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA47BFC616B for ; Fri, 25 Aug 2023 20:13:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230511AbjHYUNT (ORCPT ); Fri, 25 Aug 2023 16:13:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230309AbjHYUM6 (ORCPT ); Fri, 25 Aug 2023 16:12:58 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABE4A2689; Fri, 25 Aug 2023 13:12:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=ZIXbxbmWrTOUb6mh+hr1l56LloeqSAYd7MvHY9X30AE=; b=PjsxjRjlgunQfDgdcbQe11qeaU JEgmj/e8JGFhVzrLK2w0f5lGIUY4iAyPpdYGwaGHm6Xz+eobMovp2Rw3PYD084ahFz5Ziw1NqPu/5 bC1KFcVY3guT8PwXyOPW5pcEKBhPt4Y1DvzZi/48yeIH5jZ6SUMiLkpG49puz6E3H5k4scS9rNPYu iFo5lHHy5JgmZy7UxvODxsP/8gHF4f4jukuz/cNtZNtNTzqzmTdhORC3eBdhQOt4pVS/jPnxYHOER DD1ExqVHEqc44s55KQ0AgWLRGBW0bTf/0t3etxACeNIRM/6DOvqDHR/G8zohNfX8qZYrXpMbsMFyX lhqFq9xA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qZdAV-001SZk-CS; Fri, 25 Aug 2023 20:12:31 +0000 From: "Matthew Wilcox (Oracle)" To: Xiubo Li , Ilya Dryomov Cc: "Matthew Wilcox (Oracle)" , Jeff Layton , ceph-devel@vger.kernel.org, David Howells , linux-fsdevel@vger.kernel.org Subject: [PATCH 04/15] ceph: Add a migrate_folio method Date: Fri, 25 Aug 2023 21:12:14 +0100 Message-Id: <20230825201225.348148-5-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230825201225.348148-1-willy@infradead.org> References: <20230825201225.348148-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org The ceph_snap_context is independent of the address of the data, so we can implement folio migration by just removing the ceph_snap_context from the existing folio and attach it to the new one, which is exactly what filemap_migrate_folio() does. Signed-off-by: Matthew Wilcox (Oracle) --- fs/ceph/addr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 7c7dfcd63cd1..a0a1fac1a0db 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1563,6 +1563,7 @@ const struct address_space_operations ceph_aops = { .invalidate_folio = ceph_invalidate_folio, .release_folio = ceph_release_folio, .direct_IO = noop_direct_IO, + .migrate_folio = filemap_migrate_folio, }; static void ceph_block_sigs(sigset_t *oldset)