The patch titled
Subject: lib: bitmap: make nbits parameter of bitmap_subset unsigned
has been added to the -mm tree. Its filename is
lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned.patch
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------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: lib: bitmap: make nbits parameter of bitmap_subset unsigned
The compiler can generate slightly smaller and simpler code when it knows
that "nbits" is non-negative. Since no-one passes a negative bit-count,
this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/bitmap.h | 4 ++--
lib/bitmap.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff -puN include/linux/bitmap.h~lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned include/linux/bitmap.h
--- a/include/linux/bitmap.h~lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned
+++ a/include/linux/bitmap.h
@@ -109,7 +109,7 @@ extern int __bitmap_andnot(unsigned long
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, int bits);
+ const unsigned long *bitmap2, unsigned int nbits);
extern int __bitmap_weight(const unsigned long *bitmap, int bits);
extern void bitmap_set(unsigned long *map, int i, int len);
@@ -249,7 +249,7 @@ static inline int bitmap_intersects(cons
}
static inline int bitmap_subset(const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
return ! ((*src1 & ~(*src2)) & BITMAP_LAST_WORD_MASK(nbits));
diff -puN lib/bitmap.c~lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned lib/bitmap.c
--- a/lib/bitmap.c~lib-bitmap-make-nbits-parameter-of-bitmap_subset-unsigned
+++ a/lib/bitmap.c
@@ -245,9 +245,9 @@ int __bitmap_intersects(const unsigned l
EXPORT_SYMBOL(__bitmap_intersects);
int __bitmap_subset(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] & ~bitmap2[k])
return 0;
_
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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