fs/ext2/xip.c

   1 /*
   2  *  linux/fs/ext2/xip.c
   3  *
   4  * Copyright (C) 2005 IBM Corporation
   5  * Author: Carsten Otte (cotte@de.ibm.com)
   6  */
   7
   8 #include <linux/mm.h>
   9 #include <linux/fs.h>
  10 #include <linux/genhd.h>
  11 #include <linux/buffer_head.h>
  12 #include <linux/blkdev.h>
  13 #include "ext2.h"
  14 #include "xip.h"
  15
  16 void ext2_xip_verify_sb(struct super_block *sb)
  17 {
  18         struct ext2_sb_info *sbi = EXT2_SB(sb);
  19
  20         if ((sbi->s_mount_opt & EXT2_MOUNT_XIP) &&
  21             !sb->s_bdev->bd_disk->fops->direct_access) {
  22                 sbi->s_mount_opt &= (~EXT2_MOUNT_XIP);
  23                 ext2_msg(sb, KERN_WARNING,
  24                              "warning: ignoring xip option - "
  25                              "not supported by bdev");
  26         }
  27 }