__lock_page(9)
NAME
- __lock_page - get a lock on the page, assuming we need to
- sleep to get
it
SYNOPSIS
void __lock_page(struct page * page);
ARGUMENTS
- page
- the page to lock
DESCRIPTION
- Ugly. Running sync_page in state TASK_UNINTERRUPTIBLE is
- scary. If some
random driver´s requestfn sets TASK_RUNNING, we could - busywait. However
chances are that on the second loop, the block layer´s - plug list is
empty, so sync_page will then return in state TASK_UNIN - TERRUPTIBLE.