Messages in this thread |  | | | Subject | Question about do_wp_page() and lock_page() | | From | Larry Woodman <> | | Date | Wed, 14 Jan 2009 16:35:08 -0500 |
| |
Why is it safe for do_wp_page() to call cow_user_page() without locking the old_page first? If a Direct IO read is outstanding on the old_page or its the buffer to the file_read_actor() cant its contents change during the COW fault? Is this not a problem?
Larry Woodman
|  |