Messages in this thread | | | Date | Fri, 27 Mar 2009 11:12:21 +0900 | Subject | Question about PRIVATE_FUTEX | From | Minchan Kim <> |
| |
Hi, Peter and Eric.
I am not expert about futex. I am sorry if this is dumb question.
If we use private futex, get_futex_key don't call get_user_pages_fast which pins page at page table. Then, get_futex_value_locked calls __cpy_from_user_inatomic with pagefault_disable.
Who make sure the user page is mapped at app's page table ?
-- Kinds regards, Minchan Kim
| |