Hi Andrew & Andrea,

Here is the updated patch with name change again :(
Hopefully this would be final. (MADV_REMOVE).

BTW, I am not sure if we need to hold i_sem and i_allocsem
all the way ? I wanted to be safe - but this may be overkill ?


+       /* XXX - Do we need both i_sem and i_allocsem all the way ? */
+       down(&inode->i_sem);
+       down_write(&inode->i_alloc_sem);
+       unmap_mapping_range(mapping, offset, (end - offset), 1);
+       truncate_inode_pages_range(mapping, offset, end);
+       inode->i_op->truncate_range(inode, offset, end);
+       up_write(&inode->i_alloc_sem);
+       up(&inode->i_sem);


Thanks,
Badari