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mm: export __get_user_pages

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In most cases, get_user_pages and get_user_pages_fast should be used
to pin user pages in memory.  But sometimes, some special flags except
FOLL_GET, FOLL_WRITE and FOLL_FORCE are needed, for example in
following patch, KVM needs FOLL_HWPOISON.  To support these users,
__get_user_pages is exported directly.

There are some symbol name conflicts in infiniband driver, fixed them too.

Signed-off-by: Huang Ying <[email protected]>
CC: Andrew Morton <[email protected]>
CC: Michel Lespinasse <[email protected]>
CC: Roland Dreier <[email protected]>
CC: Ralph Campbell <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]>
This commit is contained in:
Huang Ying 2011-01-30 11:15:47 +08:00 • committed by Marcelo Tosatti
commit 0014bd990e
5 changed files with 60 additions and 11 deletions
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5
mm/internal.h
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@ -245,11 +245,6 @@ static inline void mminit_validate_memmodel_limits(unsigned long *start_pfn,
}
#endif /* CONFIG_SPARSEMEM */
int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, int len, unsigned int foll_flags,
struct page **pages, struct vm_area_struct **vmas,
int *nonblocking);
#define ZONE_RECLAIM_NOSCAN -2
#define ZONE_RECLAIM_FULL -1
#define ZONE_RECLAIM_SOME 0