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| author | Ian Campbell <ian.campbell@citrix.com> | 2011-08-17 17:40:33 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-17 13:00:20 -0700 |
| commit | aa462abe8aaf2198d6aef97da20c874ac694a39f (patch) | |
| tree | f7c1b4e82fe8eeaad8ce61a5e9e4d301accaf32b /include/asm-generic | |
| parent | f991879473828f320a714e9494fb37a26ccd6b66 (diff) | |
| download | op-kernel-dev-aa462abe8aaf2198d6aef97da20c874ac694a39f.zip op-kernel-dev-aa462abe8aaf2198d6aef97da20c874ac694a39f.tar.gz | |
mm: fix __page_to_pfn for a const struct page argument
This allows the cast in lowmem_page_address (introduced as a warning
fixup to 33dd4e0ec911 "mm: make some struct page's const") to be
removed.
Propagate const'ness to page_to_section() as well since it is required
by __page_to_pfn.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/memory_model.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h index fb2d63f..aea9e45 100644 --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -39,7 +39,7 @@ }) #define __page_to_pfn(pg) \ -({ struct page *__pg = (pg); \ +({ const struct page *__pg = (pg); \ struct pglist_data *__pgdat = NODE_DATA(page_to_nid(__pg)); \ (unsigned long)(__pg - __pgdat->node_mem_map) + \ __pgdat->node_start_pfn; \ @@ -57,7 +57,7 @@ * section[i].section_mem_map == mem_map's address - start_pfn; */ #define __page_to_pfn(pg) \ -({ struct page *__pg = (pg); \ +({ const struct page *__pg = (pg); \ int __sec = page_to_section(__pg); \ (unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec))); \ }) |
