cifs: remove support for CIFS_IOC_CHECKUMOUNT ioctl

...as promised for 3.7.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>

fs/cifs/ioctl.c

@@ -28,8 +28,6 @@
 #include "cifs_debug.h"
 #include "cifsfs.h"
 
-#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
-
 long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
 {
 	struct inode *inode = filep->f_dentry->d_inode;
@@ -51,23 +49,6 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
 	cifs_sb = CIFS_SB(inode->i_sb);
 
 	switch (command) {
-		static bool warned = false;
-		case CIFS_IOC_CHECKUMOUNT:
-			if (!warned) {
-				warned = true;
-				cERROR(1, "the CIFS_IOC_CHECKMOUNT ioctl will "
-					  "be deprecated in 3.7. Please "
-					  "migrate away from the use of "
-					  "umount.cifs");
-			}
-			cFYI(1, "User unmount attempted");
-			if (cifs_sb->mnt_uid == current_uid())
-				rc = 0;
-			else {
-				rc = -EACCES;
-				cFYI(1, "uids do not match");
-			}
-			break;
 #ifdef CONFIG_CIFS_POSIX
 		case FS_IOC_GETFLAGS:
 			if (pSMBFile == NULL)