1UNLOCK_PAGE(9)            Memory Management in Linux            UNLOCK_PAGE(9)
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NAME

6       unlock_page - unlock a locked page
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SYNOPSIS

9       void unlock_page(struct page * page);
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ARGUMENTS

12       page
13           the page
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DESCRIPTION

16       Unlocks the page and wakes up sleepers in ___wait_on_page_locked. Also
17       wakes sleepers in wait_on_page_writeback because the wakeup mechananism
18       between PageLocked pages and PageWriteback pages is shared. But that's
19       OK - sleepers in wait_on_page_writeback just go back to sleep.
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21       The mb is necessary to enforce ordering between the clear_bit and the
22       read of the waitqueue (to avoid SMP races with a parallel
23       wait_on_page_locked).
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26Kernel Hackers Manual 2.6.       November 2011                  UNLOCK_PAGE(9)
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