From patchwork Wed Sep 30 01:55:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 11807627 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 44B56618 for ; Wed, 30 Sep 2020 01:56:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 218E021531 for ; Wed, 30 Sep 2020 01:56:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="tDv3QbH2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729935AbgI3B44 (ORCPT ); Tue, 29 Sep 2020 21:56:56 -0400 Received: from mx2.suse.de ([195.135.220.15]:50730 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729924AbgI3B4z (ORCPT ); Tue, 29 Sep 2020 21:56:55 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1601431014; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OJbPtFjlYngo9brT9t/2Ci+mNTwxpkoETnmOgFwfpnw=; b=tDv3QbH2AAK64pqnG6R4lei7hzv1PMCmUUmMSRUiL0ZS8V5e0ZIPI9NskvFglOGjuUvdZI RDFmAhbQDsdNG2PVWEsgqLHGWLjLDVX+GalsdptprK+GUPlADNMhRlNE1JZE5v3Xd9R8j3 Rt8/TjlW3Eu8Yqhrn3dv0FNP6mA+WT4= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 22ECEAF95 for ; Wed, 30 Sep 2020 01:56:54 +0000 (UTC) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH v3 33/49] btrfs: extent_io: make set/clear_extent_buffer_uptodate() to support subpage size Date: Wed, 30 Sep 2020 09:55:23 +0800 Message-Id: <20200930015539.48867-34-wqu@suse.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200930015539.48867-1-wqu@suse.com> References: <20200930015539.48867-1-wqu@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org For those two functions, to support subpage size they just need the follow work: - set/clear the EXTENT_UPTODATE bits for io_tree - set page Uptodate if the full range of the page is uptodate Signed-off-by: Qu Wenruo --- fs/btrfs/extent_io.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 4dbc0b79c4ce..c9bbb91c6155 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -5602,10 +5602,18 @@ bool set_extent_buffer_dirty(struct extent_buffer *eb) void clear_extent_buffer_uptodate(struct extent_buffer *eb) { int i; - struct page *page; + struct page *page = eb->pages[0]; int num_pages; clear_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags); + + if (btrfs_is_subpage(eb->fs_info) && page->mapping) { + struct extent_io_tree *io_tree = + info_to_btree_io_tree(eb->fs_info); + + clear_extent_uptodate(io_tree, eb->start, + eb->start + eb->len - 1, NULL); + } num_pages = num_extent_pages(eb); for (i = 0; i < num_pages; i++) { page = eb->pages[i]; @@ -5617,10 +5625,26 @@ void clear_extent_buffer_uptodate(struct extent_buffer *eb) void set_extent_buffer_uptodate(struct extent_buffer *eb) { int i; - struct page *page; + struct page *page = eb->pages[0]; int num_pages; set_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags); + + if (btrfs_is_subpage(eb->fs_info) && page->mapping) { + struct extent_state *cached = NULL; + struct extent_io_tree *io_tree = + info_to_btree_io_tree(eb->fs_info); + u64 page_start = page_offset(page); + u64 page_end = page_offset(page) + PAGE_SIZE - 1; + + set_extent_uptodate(io_tree, eb->start, eb->start + eb->len - 1, + &cached, GFP_NOFS); + if (test_range_bit(io_tree, page_start, page_end, + EXTENT_UPTODATE, 1, cached)) + SetPageUptodate(page); + free_extent_state(cached); + return; + } num_pages = num_extent_pages(eb); for (i = 0; i < num_pages; i++) { page = eb->pages[i];