The patch titled
Subject: lib: bitmap: change parameter of bitmap_*_region to unsigned
has been removed from the -mm tree. Its filename was
lib-bitmap-change-parameter-of-bitmap__region-to-unsigned.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: lib: bitmap: change parameter of bitmap_*_region to unsigned
Changing the pos parameter of __reg_op to unsigned allows the compiler to
generate slightly smaller and simpler code. Also update its callers
bitmap_*_region to receive and pass unsigned int. The return types of
bitmap_find_free_region and bitmap_allocate_region are still int to allow
a negative error code to be returned. An int is certainly capable of
representing any realistic return value.
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/bitmap.h | 6 +++---
lib/bitmap.c | 12 ++++++------
2 files changed, 9 insertions(+), 9 deletions(-)
diff -puN include/linux/bitmap.h~lib-bitmap-change-parameter-of-bitmap__region-to-unsigned include/linux/bitmap.h
--- a/include/linux/bitmap.h~lib-bitmap-change-parameter-of-bitmap__region-to-unsigned
+++ a/include/linux/bitmap.h
@@ -140,9 +140,9 @@ extern void bitmap_onto(unsigned long *d
const unsigned long *relmap, int bits);
extern void bitmap_fold(unsigned long *dst, const unsigned long *orig,
int sz, int bits);
-extern int bitmap_find_free_region(unsigned long *bitmap, int bits, int order);
-extern void bitmap_release_region(unsigned long *bitmap, int pos, int order);
-extern int bitmap_allocate_region(unsigned long *bitmap, int pos, int order);
+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);
extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits);
extern int bitmap_ord_to_pos(const unsigned long *bitmap, int n, int bits);
diff -puN lib/bitmap.c~lib-bitmap-change-parameter-of-bitmap__region-to-unsigned lib/bitmap.c
--- a/lib/bitmap.c~lib-bitmap-change-parameter-of-bitmap__region-to-unsigned
+++ a/lib/bitmap.c
@@ -1042,7 +1042,7 @@ enum {
REG_OP_RELEASE, /* clear all bits in region */
};
-static int __reg_op(unsigned long *bitmap, int pos, int order, int reg_op)
+static int __reg_op(unsigned long *bitmap, unsigned int pos, int order, int reg_op)
{
int nbits_reg; /* number of bits in region */
int index; /* index first long of region in bitmap */
@@ -1108,11 +1108,11 @@ done:
* Return the bit offset in bitmap of the allocated region,
* or -errno on failure.
*/
-int bitmap_find_free_region(unsigned long *bitmap, int bits, int order)
+int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order)
{
- int pos, end; /* scans bitmap by regions of size order */
+ unsigned int pos, end; /* scans bitmap by regions of size order */
- for (pos = 0 ; (end = pos + (1 << order)) <= bits; pos = end) {
+ for (pos = 0 ; (end = pos + (1U << order)) <= bits; pos = end) {
if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
continue;
__reg_op(bitmap, pos, order, REG_OP_ALLOC);
@@ -1133,7 +1133,7 @@ EXPORT_SYMBOL(bitmap_find_free_region);
*
* No return value.
*/
-void bitmap_release_region(unsigned long *bitmap, int pos, int order)
+void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order)
{
__reg_op(bitmap, pos, order, REG_OP_RELEASE);
}
@@ -1150,7 +1150,7 @@ EXPORT_SYMBOL(bitmap_release_region);
* Return 0 on success, or %-EBUSY if specified region wasn't
* free (not all bits were zero).
*/
-int bitmap_allocate_region(unsigned long *bitmap, int pos, int order)
+int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order)
{
if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
return -EBUSY;
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
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