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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-15 12:31:37 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-15 15:57:51 +0200
commit465a454f254ee2ff7acc4aececbe31f8af046bc0 (patch)
tree459a4ba588c9ccd2320e20d6f9ae66538f2ebfea /include/linux/mm.h
parent75f937f24bd9c003dcb9d7d5509f23459f1f6000 (diff)
x86, mm: Add __get_user_pages_fast()
Introduce a gup_fast() variant which is usable from IRQ/NMI context. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Nick Piggin <npiggin@suse.de> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ad613ed66ab..b457bc047ab 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -863,6 +863,12 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages);
/*
+ * doesn't attempt to fault and will return short.
+ */
+int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ struct page **pages);
+
+/*
* A callback you can register to apply pressure to ageable caches.
*
* 'shrink' is passed a count 'nr_to_scan' and a 'gfpmask'. It should