lib: bitmap: remove the 'extern' keyword from function declarations

The 'extern' keyword doesn't have any benefits for functions in header
files. Remove it.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

include/linux/bitmap.h

@@ -118,54 +118,53 @@
  * Allocation and deallocation of bitmap.
  * Provided in lib/bitmap.c to avoid circular dependency.
  */
-extern unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
-extern unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
-extern void bitmap_free(const unsigned long *bitmap);
+unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
+unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
+void bitmap_free(const unsigned long *bitmap);
 
 /*
  * lib/bitmap.c provides these functions:
  */
 
-extern int __bitmap_equal(const unsigned long *bitmap1,
-			  const unsigned long *bitmap2, unsigned int nbits);
-extern bool __pure __bitmap_or_equal(const unsigned long *src1,
-				     const unsigned long *src2,
-				     const unsigned long *src3,
-				     unsigned int nbits);
-extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
-			unsigned int nbits);
-extern void __bitmap_shift_right(unsigned long *dst, const unsigned long *src,
-				unsigned int shift, unsigned int nbits);
-extern void __bitmap_shift_left(unsigned long *dst, const unsigned long *src,
-				unsigned int shift, unsigned int nbits);
-extern void bitmap_cut(unsigned long *dst, const unsigned long *src,
-		       unsigned int first, unsigned int cut,
-		       unsigned int nbits);
-extern int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+int __bitmap_equal(const unsigned long *bitmap1,
+		   const unsigned long *bitmap2, unsigned int nbits);
+bool __pure __bitmap_or_equal(const unsigned long *src1,
+			      const unsigned long *src2,
+			      const unsigned long *src3,
+			      unsigned int nbits);
+void __bitmap_complement(unsigned long *dst, const unsigned long *src,
+			 unsigned int nbits);
+void __bitmap_shift_right(unsigned long *dst, const unsigned long *src,
+			  unsigned int shift, unsigned int nbits);
+void __bitmap_shift_left(unsigned long *dst, const unsigned long *src,
+			 unsigned int shift, unsigned int nbits);
+void bitmap_cut(unsigned long *dst, const unsigned long *src,
+		unsigned int first, unsigned int cut, unsigned int nbits);
+int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+		 const unsigned long *bitmap2, unsigned int nbits);
+void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
+		 const unsigned long *bitmap2, unsigned int nbits);
+void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
+		  const unsigned long *bitmap2, unsigned int nbits);
+int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
+		    const unsigned long *bitmap2, unsigned int nbits);
+void __bitmap_replace(unsigned long *dst,
+		      const unsigned long *old, const unsigned long *new,
+		      const unsigned long *mask, unsigned int nbits);
+int __bitmap_intersects(const unsigned long *bitmap1,
 			const unsigned long *bitmap2, unsigned int nbits);
-extern void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, unsigned int nbits);
-extern void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, unsigned int nbits);
-extern int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, unsigned int nbits);
-extern void __bitmap_replace(unsigned long *dst,
-			const unsigned long *old, const unsigned long *new,
-			const unsigned long *mask, unsigned int nbits);
-extern int __bitmap_intersects(const unsigned long *bitmap1,
-			const unsigned long *bitmap2, unsigned int nbits);
-extern int __bitmap_subset(const unsigned long *bitmap1,
-			const unsigned long *bitmap2, unsigned int nbits);
-extern int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
-extern void __bitmap_set(unsigned long *map, unsigned int start, int len);
-extern void __bitmap_clear(unsigned long *map, unsigned int start, int len);
-
-extern unsigned long bitmap_find_next_zero_area_off(unsigned long *map,
-						    unsigned long size,
-						    unsigned long start,
-						    unsigned int nr,
-						    unsigned long align_mask,
-						    unsigned long align_offset);
+int __bitmap_subset(const unsigned long *bitmap1,
+		    const unsigned long *bitmap2, unsigned int nbits);
+int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
+void __bitmap_set(unsigned long *map, unsigned int start, int len);
+void __bitmap_clear(unsigned long *map, unsigned int start, int len);
+
+unsigned long bitmap_find_next_zero_area_off(unsigned long *map,
+					     unsigned long size,
+					     unsigned long start,
+					     unsigned int nr,
+					     unsigned long align_mask,
+					     unsigned long align_offset);
 
 /**
  * bitmap_find_next_zero_area - find a contiguous aligned zero area
@@ -190,33 +189,33 @@ bitmap_find_next_zero_area(unsigned long *map,
 					      align_mask, 0);
 }
 
-extern int bitmap_parse(const char *buf, unsigned int buflen,
+int bitmap_parse(const char *buf, unsigned int buflen,
 			unsigned long *dst, int nbits);
-extern int bitmap_parse_user(const char __user *ubuf, unsigned int ulen,
+int bitmap_parse_user(const char __user *ubuf, unsigned int ulen,
 			unsigned long *dst, int nbits);
-extern int bitmap_parselist(const char *buf, unsigned long *maskp,
+int bitmap_parselist(const char *buf, unsigned long *maskp,
 			int nmaskbits);
-extern int bitmap_parselist_user(const char __user *ubuf, unsigned int ulen,
+int bitmap_parselist_user(const char __user *ubuf, unsigned int ulen,
 			unsigned long *dst, int nbits);
-extern void bitmap_remap(unsigned long *dst, const unsigned long *src,
+void bitmap_remap(unsigned long *dst, const unsigned long *src,
 		const unsigned long *old, const unsigned long *new, unsigned int nbits);
-extern int bitmap_bitremap(int oldbit,
+int bitmap_bitremap(int oldbit,
 		const unsigned long *old, const unsigned long *new, int bits);
-extern void bitmap_onto(unsigned long *dst, const unsigned long *orig,
+void bitmap_onto(unsigned long *dst, const unsigned long *orig,
 		const unsigned long *relmap, unsigned int bits);
-extern void bitmap_fold(unsigned long *dst, const unsigned long *orig,
+void bitmap_fold(unsigned long *dst, const unsigned long *orig,
 		unsigned int sz, unsigned int nbits);
-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);
+int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order);
+void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order);
+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);
+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,
+unsigned int bitmap_ord_to_pos(const unsigned long *bitmap, unsigned int ord, unsigned int nbits);
+int bitmap_print_to_pagebuf(bool list, char *buf,
 				   const unsigned long *maskp, int nmaskbits);
 
 #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
@@ -265,9 +264,9 @@ static inline void bitmap_copy_clear_tail(unsigned long *dst,
  * therefore conversion is not needed when copying data from/to arrays of u32.
  */
 #if BITS_PER_LONG == 64
-extern void bitmap_from_arr32(unsigned long *bitmap, const u32 *buf,
+void bitmap_from_arr32(unsigned long *bitmap, const u32 *buf,
 							unsigned int nbits);
-extern void bitmap_to_arr32(u32 *buf, const unsigned long *bitmap,
+void bitmap_to_arr32(u32 *buf, const unsigned long *bitmap,
 							unsigned int nbits);
 #else
 #define bitmap_from_arr32(bitmap, buf, nbits)			\