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authorZhang Yanfei <zhangyanfei@cn.fujitsu.com>2013-02-23 04:35:43 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-24 05:50:21 +0400
commitebec3862fd6eefe8301aa55ed2e30c685d831842 (patch)
treedda7828d852e384a382b277be0ec80b21ff38c72 /include/linux/swap.h
parent1081312f95be1a0fc093556d789e482d3ab0f5b0 (diff)
downloadlinux-ebec3862fd6eefe8301aa55ed2e30c685d831842.tar.xz
mm: fix return type for functions nr_free_*_pages
Currently, the amount of RAM that functions nr_free_*_pages return is held in unsigned int. But in machines with big memory (exceeding 16TB), the amount may be incorrect because of overflow, so fix it. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Simon Horman <horms@verge.net.au> Cc: Julian Anastasov <ja@ssi.bg> Cc: David Miller <davem@davemloft.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@sandia.gov> Cc: Latchesar Ionkov <lucho@ionkov.net> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/swap.h')
-rw-r--r--include/linux/swap.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index a3e22d357e91..8a15f38ebc5c 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -225,8 +225,8 @@ struct swap_list_t {
extern unsigned long totalram_pages;
extern unsigned long totalreserve_pages;
extern unsigned long dirty_balance_reserve;
-extern unsigned int nr_free_buffer_pages(void);
-extern unsigned int nr_free_pagecache_pages(void);
+extern unsigned long nr_free_buffer_pages(void);
+extern unsigned long nr_free_pagecache_pages(void);
/* Definition of global_page_state not available yet */
#define nr_free_pages() global_page_state(NR_FREE_PAGES)