From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp05.au.ibm.com ([202.81.31.147]:47814 "EHLO e23smtp05.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934438AbcAUK2S (ORCPT ); Thu, 21 Jan 2016 05:28:18 -0500 Received: from localhost by e23smtp05.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 21 Jan 2016 20:28:16 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id A256F3578053 for ; Thu, 21 Jan 2016 21:28:14 +1100 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0LAS6S359572418 for ; Thu, 21 Jan 2016 21:28:14 +1100 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0LARfhd026021 for ; Thu, 21 Jan 2016 21:27:42 +1100 From: Chandan Rajendra To: linux-btrfs@vger.kernel.org Cc: Chandan Rajendra , jbacik@fb.com, clm@fb.com, bo.li.liu@oracle.com, dsterba@suse.cz, chandan@mykolab.com Subject: [PATCH V13 07/14] Btrfs: subpagesize-blocksize: Allow mounting filesystems where sectorsize != PAGE_SIZE Date: Thu, 21 Jan 2016 15:56:54 +0530 Message-Id: <1453372021-5089-8-git-send-email-chandan@linux.vnet.ibm.com> In-Reply-To: <1453372021-5089-1-git-send-email-chandan@linux.vnet.ibm.com> References: <1453372021-5089-1-git-send-email-chandan@linux.vnet.ibm.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: This patch allows mounting filesystems with blocksize smaller than the PAGE_SIZE. Signed-off-by: Chandan Rajendra --- fs/btrfs/disk-io.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 7690cb5..1819caa 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2877,12 +2877,6 @@ int open_ctree(struct super_block *sb, goto fail_sb_buffer; } - if (sectorsize != PAGE_SIZE) { - printk(KERN_ERR "BTRFS: incompatible sector size (%lu) " - "found on %s\n", (unsigned long)sectorsize, sb->s_id); - goto fail_sb_buffer; - } - mutex_lock(&fs_info->chunk_mutex); ret = btrfs_read_sys_array(tree_root); mutex_unlock(&fs_info->chunk_mutex); @@ -4100,8 +4094,8 @@ static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info, btrfs_super_nodesize(sb)); ret = -EINVAL; } - if (btrfs_super_sectorsize(sb) < 4096) { - printk(KERN_ERR "BTRFS: sectorsize too small: %u < 4096\n", + if (btrfs_super_sectorsize(sb) < 2048) { + printk(KERN_ERR "BTRFS: sectorsize too small: %u < 2048\n", btrfs_super_sectorsize(sb)); ret = -EINVAL; } -- 2.1.0