SMB3: Rename clone_range to copychunk_range

Server side copy is one of the most important mechanisms smb2/smb3
supports and it was unintentionally disabled for most use cases.

Renaming calls to reflect the underlying smb2 ioctl called. This is
similar to the name duplicate_extents used for a similar ioctl which is
also used to duplicate files by reusing fs blocks. The name change is to
avoid confusion.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c34bdb1..57c5948 100644 (file)
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -408,7 +408,8 @@ struct smb_version_operations {
        char * (*create_lease_buf)(u8 *, u8);
        /* parse lease context buffer and return oplock/epoch info */
        __u8 (*parse_lease_buf)(void *, unsigned int *);
-       int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file,
+       int (*copychunk_range)(const unsigned int,
+                       struct cifsFileInfo *src_file,
                        struct cifsFileInfo *target_file, u64 src_off, u64 len,
                        u64 dest_off);
        int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src,

diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 0015287..9bf0f94 100644 (file)
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -34,7 +34,7 @@
 #include "cifs_ioctl.h"
 #include <linux/btrfs.h>
 
-static int cifs_file_clone_range(unsigned int xid, struct file *src_file,
+static int cifs_file_copychunk_range(unsigned int xid, struct file *src_file,
                          struct file *dst_file)
 {
        struct inode *src_inode = file_inode(src_file);
@@ -45,7 +45,7 @@ static int cifs_file_clone_range(unsigned int xid, struct file *src_file,
        struct cifs_tcon *target_tcon;
        int rc;
 
-       cifs_dbg(FYI, "ioctl clone range\n");
+       cifs_dbg(FYI, "ioctl copychunk range\n");
 
        if (!src_file->private_data || !dst_file->private_data) {
                rc = -EBADF;
@@ -75,8 +75,8 @@ static int cifs_file_clone_range(unsigned int xid, struct file *src_file,
        /* should we flush first and last page first */
        truncate_inode_pages(&target_inode->i_data, 0);
 
-       if (target_tcon->ses->server->ops->clone_range)
-               rc = target_tcon->ses->server->ops->clone_range(xid,
+       if (target_tcon->ses->server->ops->copychunk_range)
+               rc = target_tcon->ses->server->ops->copychunk_range(xid,
                        smb_file_src, smb_file_target, 0, src_inode->i_size, 0);
        else
                rc = -EOPNOTSUPP;
@@ -91,14 +91,14 @@ out:
        return rc;
 }
 
-static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
+static long cifs_ioctl_copychunk(unsigned int xid, struct file *dst_file,
                        unsigned long srcfd)
 {
        int rc;
        struct fd src_file;
        struct inode *src_inode;
 
-       cifs_dbg(FYI, "ioctl clone range\n");
+       cifs_dbg(FYI, "ioctl copychunk range\n");
        /* the destination must be opened for writing */
        if (!(dst_file->f_mode & FMODE_WRITE)) {
                cifs_dbg(FYI, "file target not open for write\n");
@@ -129,7 +129,7 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
        if (S_ISDIR(src_inode->i_mode))
                goto out_fput;
 
-       rc = cifs_file_clone_range(xid, src_file.file, dst_file);
+       rc = cifs_file_copychunk_range(xid, src_file.file, dst_file);
 
 out_fput:
        fdput(src_file);
@@ -251,7 +251,7 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
                        }
                        break;
                case CIFS_IOC_COPYCHUNK_FILE:
-                       rc = cifs_ioctl_clone(xid, filep, arg);
+                       rc = cifs_ioctl_copychunk(xid, filep, arg);
                        break;
                case CIFS_IOC_SET_INTEGRITY:
                        if (pSMBFile == NULL)

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index b6bdf93..3f12e09 100644 (file)
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -593,7 +593,7 @@ req_res_key_exit:
 }
 
 static int
-smb2_clone_range(const unsigned int xid,
+smb2_copychunk_range(const unsigned int xid,
                        struct cifsFileInfo *srcfile,
                        struct cifsFileInfo *trgtfile, u64 src_off,
                        u64 len, u64 dest_off)
@@ -611,7 +611,7 @@ smb2_clone_range(const unsigned int xid,
        if (pcchunk == NULL)
                return -ENOMEM;
 
-       cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
+       cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
        /* Request a key from the server to identify the source of the copy */
        rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
                                srcfile->fid.persistent_fid,
@@ -2378,7 +2378,7 @@ struct smb_version_operations smb20_operations = {
        .set_oplock_level = smb2_set_oplock_level,
        .create_lease_buf = smb2_create_lease_buf,
        .parse_lease_buf = smb2_parse_lease_buf,
-       .clone_range = smb2_clone_range,
+       .copychunk_range = smb2_copychunk_range,
        .wp_retry_size = smb2_wp_retry_size,
        .dir_needs_close = smb2_dir_needs_close,
        .get_dfs_refer = smb2_get_dfs_refer,
@@ -2461,7 +2461,7 @@ struct smb_version_operations smb21_operations = {
        .set_oplock_level = smb21_set_oplock_level,
        .create_lease_buf = smb2_create_lease_buf,
        .parse_lease_buf = smb2_parse_lease_buf,
-       .clone_range = smb2_clone_range,
+       .copychunk_range = smb2_copychunk_range,
        .wp_retry_size = smb2_wp_retry_size,
        .dir_needs_close = smb2_dir_needs_close,
        .enum_snapshots = smb3_enum_snapshots,
@@ -2548,7 +2548,7 @@ struct smb_version_operations smb30_operations = {
        .set_oplock_level = smb3_set_oplock_level,
        .create_lease_buf = smb3_create_lease_buf,
        .parse_lease_buf = smb3_parse_lease_buf,
-       .clone_range = smb2_clone_range,
+       .copychunk_range = smb2_copychunk_range,
        .duplicate_extents = smb2_duplicate_extents,
        .validate_negotiate = smb3_validate_negotiate,
        .wp_retry_size = smb2_wp_retry_size,
@@ -2643,7 +2643,7 @@ struct smb_version_operations smb311_operations = {
        .set_oplock_level = smb3_set_oplock_level,
        .create_lease_buf = smb3_create_lease_buf,
        .parse_lease_buf = smb3_parse_lease_buf,
-       .clone_range = smb2_clone_range,
+       .copychunk_range = smb2_copychunk_range,
        .duplicate_extents = smb2_duplicate_extents,
 /*     .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
        .wp_retry_size = smb2_wp_retry_size,