The patch titled
Subject: lib: bitmap: make the start index of bitmap_clear unsigned
has been added to the -mm tree. Its filename is
lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned.patch
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------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: lib: bitmap: make the start index of bitmap_clear unsigned
The compiler can generate slightly smaller and simpler code when it knows
that "start" is non-negative.
Also, use the names "start" and "len" for the two parameters for
consistency with bitmap_set.
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/bitmap.h | 2 +-
lib/bitmap.c | 10 +++++-----
2 files changed, 6 insertions(+), 6 deletions(-)
diff -puN include/linux/bitmap.h~lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned include/linux/bitmap.h
--- a/include/linux/bitmap.h~lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned
+++ a/include/linux/bitmap.h
@@ -113,7 +113,7 @@ extern int __bitmap_subset(const unsigne
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, int start, int nr);
+extern void bitmap_clear(unsigned long *map, unsigned int start, int len);
extern unsigned long bitmap_find_next_zero_area(unsigned long *map,
unsigned long size,
unsigned long start,
diff -puN lib/bitmap.c~lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned lib/bitmap.c
--- a/lib/bitmap.c~lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned
+++ a/lib/bitmap.c
@@ -295,21 +295,21 @@ void bitmap_set(unsigned long *map, unsi
}
EXPORT_SYMBOL(bitmap_set);
-void bitmap_clear(unsigned long *map, int start, int nr)
+void bitmap_clear(unsigned long *map, unsigned int start, int len)
{
unsigned long *p = map + BIT_WORD(start);
- const int size = start + nr;
+ const unsigned int size = start + len;
int bits_to_clear = BITS_PER_LONG - (start % BITS_PER_LONG);
unsigned long mask_to_clear = BITMAP_FIRST_WORD_MASK(start);
- while (nr - bits_to_clear >= 0) {
+ while (len - bits_to_clear >= 0) {
*p &= ~mask_to_clear;
- nr -= bits_to_clear;
+ len -= bits_to_clear;
bits_to_clear = BITS_PER_LONG;
mask_to_clear = ~0UL;
p++;
}
- if (nr) {
+ if (len) {
mask_to_clear &= BITMAP_LAST_WORD_MASK(size);
*p &= ~mask_to_clear;
}
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are
lib-list_sort_test-return-enomem-when-allocation-fails.patch
lib-list_sort_test-add-extra-corruption-check.patch
lib-list_sort_test-simplify-and-harden-cleanup.patch
lib-list_sortc-limit-number-of-unused-cmp-callbacks.patch
lib-list_sortc-convert-to-pr_foo.patch
lib-list_sortc-convert-to-pr_foo-fix.patch
lib-bitmap-make-nbits-parameter-of-bitmap_empty-unsigned.patch
lib-bitmap-make-nbits-parameter-of-bitmap_full-unsigned.patch
lib-bitmap-make-nbits-parameter-of-bitmap_equal-unsigned.patch
lib-bitmap-make-nbits-parameter-of-bitmap_complement-unsigned.patch
lib-bitmap-remove-unnecessary-mask-from-bitmap_complement.patch
lib-bitmap-make-nbits-parameter-of-bitmap_andorxorandnot-unsigned.patch
lib-bitmap-make-nbits-parameter-of-bitmap_intersects-unsigned.patch
lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned.patch
lib-bitmap-make-nbits-parameter-of-bitmap_weight-unsigned.patch
lib-bitmap-make-the-start-index-of-bitmap_set-unsigned.patch
lib-bitmap-make-the-start-index-of-bitmap_clear-unsigned.patch
lib-bitmap-simplify-bitmap_parselist.patch
lib-bitmap-fix-typo-in-kerneldoc-for-bitmap_pos_to_ord.patch
lib-bitmap-change-parameter-of-bitmap__region-to-unsigned.patch
lib-bitmap-micro-optimize-bitmap_allocate_region.patch
lib-bitmap-add-missing-mask-in-bitmap_shift_right.patch
lib-bitmap-add-missing-mask-in-bitmap_and.patch
lib-bitmap-add-missing-mask-in-bitmap_andnot.patch
checkpatchpl-also-suggest-else-if-when-if-follows-brace.patch
linux-next.patch
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