From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:60461 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751802AbcJBN0G (ORCPT ); Sun, 2 Oct 2016 09:26:06 -0400 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u92DNDpK120600 for ; Sun, 2 Oct 2016 09:26:06 -0400 Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) by mx0b-001b2d01.pphosted.com with ESMTP id 25u1dv2hq5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sun, 02 Oct 2016 09:26:06 -0400 Received: from localhost by e33.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 2 Oct 2016 07:26:05 -0600 From: Chandan Rajendra To: clm@fb.com, jbacik@fb.com, dsterba@suse.com Cc: Chandan Rajendra , linux-btrfs@vger.kernel.org Subject: [PATCH V21 15/19] Btrfs: subpage-blocksize: Enable dedupe ioctl Date: Sun, 2 Oct 2016 18:54:24 +0530 In-Reply-To: <1475414668-25954-1-git-send-email-chandan@linux.vnet.ibm.com> References: <1475414668-25954-1-git-send-email-chandan@linux.vnet.ibm.com> Message-Id: <1475414668-25954-16-git-send-email-chandan@linux.vnet.ibm.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: The function implementing the dedupe ioctl i.e. btrfs_ioctl_file_extent_same(), returns with an error in subpage-blocksize scenario. This was done due to the fact that Btrfs did not have code to deal with block size < page size. This commit removes this restriction since we now support "block size < page size". Signed-off-by: Chandan Rajendra --- fs/btrfs/ioctl.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 4077fc1..cf13029 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -3321,21 +3321,11 @@ ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, { struct inode *src = file_inode(src_file); struct inode *dst = file_inode(dst_file); - u64 bs = BTRFS_I(src)->root->fs_info->sb->s_blocksize; ssize_t res; if (olen > BTRFS_MAX_DEDUPE_LEN) olen = BTRFS_MAX_DEDUPE_LEN; - if (WARN_ON_ONCE(bs < PAGE_SIZE)) { - /* - * Btrfs does not support blocksize < page_size. As a - * result, btrfs_cmp_data() won't correctly handle - * this situation without an update. - */ - return -EINVAL; - } - res = btrfs_extent_same(src, loff, olen, dst, dst_loff); if (res) return res; -- 2.5.5