1__LOCK_PAGE(9)            Memory Management in Linux            __LOCK_PAGE(9)
2
3
4

NAME

6       __lock_page - get a lock on the page, assuming we need to sleep to get
7       it
8

SYNOPSIS

10       void __lock_page(struct page * page);
11

ARGUMENTS

13       page
14           the page to lock
15

DESCRIPTION

17       Ugly. Running sync_page in state TASK_UNINTERRUPTIBLE is scary. If some
18       random driver´s requestfn sets TASK_RUNNING, we could busywait. However
19       chances are that on the second loop, the block layer´s plug list is
20       empty, so sync_page will then return in state TASK_UNINTERRUPTIBLE.
21

23Kernel Hackers Manual 2.6.         June 2019                    __LOCK_PAGE(9)
Impressum