sparc64: Implement __get_user_pages_fast().

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[ Upstream commit 06090e8ed8 ]

It is not sufficient to only implement get_user_pages_fast(), you
must also implement the atomic version __get_user_pages_fast()
otherwise you end up using the weak symbol fallback implementation
which simply returns zero.

This is dangerous, because it causes the futex code to loop forever
if transparent hugepages are supported (see get_futex_key()).

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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David S. Miller 2014-10-24 09:59:02 -07:00 • committed by Greg Kroah-Hartman

parent e81ef812f6

commit 2a545829b9

1 changed files with 30 additions and 0 deletions

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arch/sparc/mm/gup.c

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