UNLOCK_PAGE(9)                      Memory Management in Linux                     UNLOCK_PAGE(9)



NAME
       unlock_page - unlock a locked page

SYNOPSIS
       void unlock_page(struct page * page);

ARGUMENTS
       page
           the page

DESCRIPTION
       Unlocks the page and wakes up sleepers in ___wait_on_page_locked. Also wakes sleepers in
       wait_on_page_writeback because the wakeup mechanism between PageLocked pages and
       PageWriteback pages is shared. But that's OK - sleepers in wait_on_page_writeback just go
       back to sleep.

       The mb is necessary to enforce ordering between the clear_bit and the read of the
       waitqueue (to avoid SMP races with a parallel wait_on_page_locked).

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                            UNLOCK_PAGE(9)