From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2FD04C07E95 for ; Tue, 13 Jul 2021 06:15:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C0B961183 for ; Tue, 13 Jul 2021 06:15:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234022AbhGMGSc (ORCPT ); Tue, 13 Jul 2021 02:18:32 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:36762 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233958AbhGMGSc (ORCPT ); Tue, 13 Jul 2021 02:18:32 -0400 Received: from imap1.suse-dmz.suse.de (imap1.suse-dmz.suse.de [192.168.254.73]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 3D984221D2 for ; Tue, 13 Jul 2021 06:15:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1626156942; h=from:from:reply-to: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=iHKLrE+siTKdPcyJEAmCgAqsB0YrBnBcdvgwL9e5XsU=; b=q9efNBgF55dDwztZOdBUBKHr9CUzjYw0wenPxjw4LoC6bmZfv4ntbo9Ev0RfIZamoc1oWq HoK7CArtIzRfOkureSoOSPnldZGfuFnLq98xWiz0jn9/OhGwfPvDPCfPZldvoQhZnEfRwr t9bEaRHvwHxkJuPk0FJdKEEMaipLddc= Received: from imap1.suse-dmz.suse.de (imap1.suse-dmz.suse.de [192.168.254.73]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap1.suse-dmz.suse.de (Postfix) with ESMTPS id 7B383139AC for ; Tue, 13 Jul 2021 06:15:41 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap1.suse-dmz.suse.de with ESMTPSA id IJaUD40v7WB0XgAAGKfGzw (envelope-from ) for ; Tue, 13 Jul 2021 06:15:41 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 18/27] btrfs: make btrfs_submit_compressed_write() to be subpage compatible Date: Tue, 13 Jul 2021 14:15:07 +0800 Message-Id: <20210713061516.163318-19-wqu@suse.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210713061516.163318-1-wqu@suse.com> References: <20210713061516.163318-1-wqu@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org There is a WARN_ON() checking if @start is aligned to PAGE_SIZE, not sectorsize, which will cause false alert for subpage. Fix it to check against sectorsize. Furthermore: - Use ASSERT() to do the check So that in the future we may skip the check for production build - Also check alignment for @len Signed-off-by: Qu Wenruo --- fs/btrfs/compression.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 70a4679799be..d2d943e1f648 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -504,7 +504,8 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start, const bool use_append = btrfs_use_zone_append(inode, disk_start); const unsigned int bio_op = use_append ? REQ_OP_ZONE_APPEND : REQ_OP_WRITE; - WARN_ON(!PAGE_ALIGNED(start)); + ASSERT(IS_ALIGNED(start, fs_info->sectorsize) && + IS_ALIGNED(len, fs_info->sectorsize)); cb = kmalloc(compressed_bio_size(fs_info, compressed_len), GFP_NOFS); if (!cb) return BLK_STS_RESOURCE; -- 2.32.0