From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anna Schumaker Subject: [PATCH v3 9/9] btrfs: btrfs_copy_file_range() only supports reflinks Date: Fri, 25 Sep 2015 16:48:15 -0400 Message-ID: <1443214096-12769-10-git-send-email-Anna.Schumaker@Netapp.com> References: <1443214096-12769-1-git-send-email-Anna.Schumaker@Netapp.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1443214096-12769-1-git-send-email-Anna.Schumaker@Netapp.com> Sender: linux-btrfs-owner@vger.kernel.org To: linux-nfs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, zab@zabbo.net, viro@zeniv.linux.org.uk, clm@fb.com, darrick.wong@oracle.com, mtk.manpages@gmail.com, andros@netapp.com, hch@infradead.org List-Id: linux-api@vger.kernel.org Reject copies that don't have the COPY_FR_REFLINK flag set. Signed-off-by: Anna Schumaker Reviewed-by: David Sterba --- fs/btrfs/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 4311554..2e14b91 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -44,6 +44,7 @@ #include #include #include +#include #include "ctree.h" #include "disk-io.h" #include "transaction.h" @@ -3848,6 +3849,9 @@ ssize_t btrfs_copy_file_range(struct file *file_in, loff_t pos_in, { ssize_t ret; + if (!(flags & COPY_FR_REFLINK)) + return -EOPNOTSUPP; + ret = btrfs_clone_files(file_out, file_in, pos_in, len, pos_out); if (ret == 0) ret = len; -- 2.5.3