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authorRusty Russell <rusty@rustcorp.com.au>2008-08-13 02:52:52 +0400
committerRusty Russell <rusty@rustcorp.com.au>2008-08-12 11:52:53 +0400
commit912985dce45ef18fcdd9f5439fef054e0e22302a (patch)
tree394b3be51134bddef200f86dde48aa3e3c7ae94c /include
parent40c42076ebd362dc69210cccea101ac80b6d4bd4 (diff)
downloadlinux-912985dce45ef18fcdd9f5439fef054e0e22302a.tar.xz
mm: Make generic weak get_user_pages_fast and EXPORT_GPL it
Out of line get_user_pages_fast fallback implementation, make it a weak symbol, get rid of CONFIG_HAVE_GET_USER_PAGES_FAST. Export the symbol to modules so lguest can use it. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm.h20
1 files changed, 0 insertions, 20 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 335288bff1b7..fa651609b65d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -834,7 +834,6 @@ extern int mprotect_fixup(struct vm_area_struct *vma,
struct vm_area_struct **pprev, unsigned long start,
unsigned long end, unsigned long newflags);
-#ifdef CONFIG_HAVE_GET_USER_PAGES_FAST
/*
* get_user_pages_fast provides equivalent functionality to get_user_pages,
* operating on current and current->mm (force=0 and doesn't return any vmas).
@@ -848,25 +847,6 @@ extern int mprotect_fixup(struct vm_area_struct *vma,
int get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages);
-#else
-/*
- * Should probably be moved to asm-generic, and architectures can include it if
- * they don't implement their own get_user_pages_fast.
- */
-#define get_user_pages_fast(start, nr_pages, write, pages) \
-({ \
- struct mm_struct *mm = current->mm; \
- int ret; \
- \
- down_read(&mm->mmap_sem); \
- ret = get_user_pages(current, mm, start, nr_pages, \
- write, 0, pages, NULL); \
- up_read(&mm->mmap_sem); \
- \
- ret; \
-})
-#endif
-
/*
* A callback you can register to apply pressure to ageable caches.
*