The patch titled
Subject: kernel/resource: iomem_is_exclusive can be boolean
has been added to the -mm tree. Its filename is
kernel-resource-iomem_is_exclusive-can-be-boolean.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-resource-iomem_is_exclusive-can-be-boolean.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-resource-iomem_is_exclusive-can-be-boolean.patch
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------------------------------------------------------
From: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Subject: kernel/resource: iomem_is_exclusive can be boolean
Make iomem_is_exclusive return bool due to this particular function only
using either one or zero as its return value.
No functional change.
Link: http://lkml.kernel.org/r/1513266622-15860-5-git-send-email-baiyaowei@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/ioport.h | 2 +-
kernel/resource.c | 10 +++++-----
2 files changed, 6 insertions(+), 6 deletions(-)
diff -puN include/linux/ioport.h~kernel-resource-iomem_is_exclusive-can-be-boolean include/linux/ioport.h
--- a/include/linux/ioport.h~kernel-resource-iomem_is_exclusive-can-be-boolean
+++ a/include/linux/ioport.h
@@ -265,7 +265,7 @@ extern struct resource * __devm_request_
extern void __devm_release_region(struct device *dev, struct resource *parent,
resource_size_t start, resource_size_t n);
extern int iomem_map_sanity_check(resource_size_t addr, unsigned long size);
-extern int iomem_is_exclusive(u64 addr);
+extern bool iomem_is_exclusive(u64 addr);
extern int
walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
diff -puN kernel/resource.c~kernel-resource-iomem_is_exclusive-can-be-boolean kernel/resource.c
--- a/kernel/resource.c~kernel-resource-iomem_is_exclusive-can-be-boolean
+++ a/kernel/resource.c
@@ -1576,17 +1576,17 @@ static int strict_iomem_checks;
/*
* check if an address is reserved in the iomem resource tree
- * returns 1 if reserved, 0 if not reserved.
+ * returns true if reserved, false if not reserved.
*/
-int iomem_is_exclusive(u64 addr)
+bool iomem_is_exclusive(u64 addr)
{
struct resource *p = &iomem_resource;
- int err = 0;
+ bool err = false;
loff_t l;
int size = PAGE_SIZE;
if (!strict_iomem_checks)
- return 0;
+ return false;
addr = addr & PAGE_MASK;
@@ -1609,7 +1609,7 @@ int iomem_is_exclusive(u64 addr)
continue;
if (IS_ENABLED(CONFIG_IO_STRICT_DEVMEM)
|| p->flags & IORESOURCE_EXCLUSIVE) {
- err = 1;
+ err = true;
break;
}
}
_
Patches currently in -mm which might be from baiyaowei@xxxxxxxxxxxxxxxxxxxx are
mm-memblock-memblock_is_map-region_memory-can-be-boolean.patch
lib-lockref-__lockref_is_dead-can-be-boolean.patch
kernel-cpuset-current_cpuset_is_being_rebound-can-be-boolean.patch
kernel-resource-iomem_is_exclusive-can-be-boolean.patch
kernel-module-module_is_live-can-be-boolean.patch
kernel-mutex-mutex_is_locked-can-be-boolean.patch
crash_dump-is_kdump_kernel-can-be-boolean.patch
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