__lock_page man page on Scientific

__lock_page man page on Scientific

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__LOCK_PAGE(9)		  Memory Management in Linux		__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_UNINTERRUPTIBLE.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013			__LOCK_PAGE(9)

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