| Message ID | 1442003423-6884-10-git-send-email-Anna.Schumaker@Netapp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Sep 11, 2015 at 04:30:22PM -0400, Anna Schumaker wrote: > Reject copies that don't have the COPY_FR_REFLINK flag set. > > Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Reviewed-by: David Sterba <dsterba@suse.com> -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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 <linux/uuid.h> #include <linux/btrfs.h> #include <linux/uaccess.h> +#include <linux/copy.h> #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;
Reject copies that don't have the COPY_FR_REFLINK flag set. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> --- fs/btrfs/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+)