2.5.75

 fs

diff -Nru a/fs/block_dev.c b/fs/block_dev.c
--- a/fs/block_dev.c   Thu Jul 10 13:16:29 2003
+++ b/fs/block_dev.c   Thu Jul 10 13:16:29 2003
@@ -155,11 +155,13 @@
  */
 static loff_t block_llseek(struct file *file, loff_t offset, int origin)
 {
-   /* ewww */
-   loff_t size = file->f_dentry->d_inode->i_bdev->bd_inode->i_size;
+   struct inode *bd_inode;
+   loff_t size;
    loff_t retval;
 
-   lock_kernel();
+   bd_inode = file->f_dentry->d_inode->i_bdev->bd_inode;
+   down(&bd_inode->i_sem);
+   size = bd_inode->i_size;
 
    switch (origin) {
       case 2:
@@ -175,7 +177,7 @@
       }
       retval = offset;
    }
-   unlock_kernel();
+   up(&bd_inode->i_sem);
    return retval;
 }