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| author | David Hildenbrand <david@redhat.com> | 2020-10-15 20:09:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 11:11:18 -0700 |
| commit | cb8e3c8b4f45e4ed8987a581956dc9c3827a5bcf (patch) | |
| tree | dc7ffe5acb1c0082332b9862d803d8dde5edc068 | |
| parent | 2c76e7f6c42bcee0e25194b54140cbce866d191a (diff) | |
| download | lwn-cb8e3c8b4f45e4ed8987a581956dc9c3827a5bcf.tar.gz lwn-cb8e3c8b4f45e4ed8987a581956dc9c3827a5bcf.zip | |
kernel/resource: make iomem_resource implicit in release_mem_region_adjustable()
"mem" in the name already indicates the root, similar to
release_mem_region() and devm_request_mem_region(). Make it implicit.
The only single caller always passes iomem_resource, other parents are not
applicable.
Suggested-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Link: https://lkml.kernel.org/r/20200916073041.10355-1-david@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/ioport.h | 3 | ||||
| -rw-r--r-- | kernel/resource.c | 5 | ||||
| -rw-r--r-- | mm/memory_hotplug.c | 2 |
3 files changed, 4 insertions, 6 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 7e61389dcb01..5135d4b86cd6 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -251,8 +251,7 @@ extern struct resource * __request_region(struct resource *, extern void __release_region(struct resource *, resource_size_t, resource_size_t); #ifdef CONFIG_MEMORY_HOTREMOVE -extern void release_mem_region_adjustable(struct resource *, resource_size_t, - resource_size_t); +extern void release_mem_region_adjustable(resource_size_t, resource_size_t); #endif #ifdef CONFIG_MEMORY_HOTPLUG extern void merge_system_ram_resource(struct resource *res); diff --git a/kernel/resource.c b/kernel/resource.c index 92026827d95b..3ae2f56cc79d 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -1240,7 +1240,6 @@ EXPORT_SYMBOL(__release_region); #ifdef CONFIG_MEMORY_HOTREMOVE /** * release_mem_region_adjustable - release a previously reserved memory region - * @parent: parent resource descriptor * @start: resource start address * @size: resource region size * @@ -1258,9 +1257,9 @@ EXPORT_SYMBOL(__release_region); * assumes that all children remain in the lower address entry for * simplicity. Enhance this logic when necessary. */ -void release_mem_region_adjustable(struct resource *parent, - resource_size_t start, resource_size_t size) +void release_mem_region_adjustable(resource_size_t start, resource_size_t size) { + struct resource *parent = &iomem_resource; struct resource *new_res = NULL; bool alloc_nofail = false; struct resource **p; diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index dc7d82ece6cb..1efc92f66b9d 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1767,7 +1767,7 @@ static int __ref try_remove_memory(int nid, u64 start, u64 size) memblock_remove(start, size); } - release_mem_region_adjustable(&iomem_resource, start, size); + release_mem_region_adjustable(start, size); try_offline_node(nid); |