lib/bitmap.c: elide bitmap_copy_le on little-endian

On little-endian, there's no reason to have an extra, presumably less
efficient, way of copying a bitmap.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 334fe32d8f0e19c05f8164cdac43db85250eb76a..cffc89c23c027b0c81a931beebc5a74fc75288bb 100644 (file)
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -170,7 +170,11 @@ extern void bitmap_fold(unsigned long *dst, const unsigned long *orig,
 extern int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order);
 extern void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order);
 extern int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order);
+#ifdef __BIG_ENDIAN
 extern void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int nbits);
+#else
+#define bitmap_copy_le bitmap_copy
+#endif
 extern unsigned int bitmap_ord_to_pos(const unsigned long *bitmap, unsigned int ord, unsigned int nbits);
 extern int bitmap_print_to_pagebuf(bool list, char *buf,
                                   const unsigned long *maskp, int nmaskbits);

diff --git a/lib/bitmap.c b/lib/bitmap.c
index e4ac20bec76cdc8c3ccd8eb01c44696cc0211edb..d2cd50cd4f5dda75d639b3d00c159e31e5529d69 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1191,6 +1191,7 @@ EXPORT_SYMBOL(bitmap_allocate_region);
  *
  * Require nbits % BITS_PER_LONG == 0.
  */
+#ifdef __BIG_ENDIAN
 void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int nbits)
 {
        unsigned int i;
@@ -1203,3 +1204,4 @@ void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int n
        }
 }
 EXPORT_SYMBOL(bitmap_copy_le);
+#endif