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x86: Document get_user_pages_fast()
authorAndy Grover <andy.grover@oracle.com>
Thu, 9 Apr 2009 23:45:29 +0000 (16:45 -0700)
committerIngo Molnar <mingo@elte.hu>
Fri, 10 Apr 2009 11:14:08 +0000 (13:14 +0200)
While better than get_user_pages(), the usage of gupf(),
especially the return values and the fact that it can
potentially only partially pin the range, warranted some
documentation.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
Cc: npiggin@suse.de
Cc: akpm@linux-foundation.org
LKML-Reference: <1239320729-3262-1-git-send-email-andy.grover@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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