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| author | Zhang Yanfei <zhangyanfei@cn.fujitsu.com> | 2013-07-09 00:59:52 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 19:33:20 +0200 |
| commit | 7960aedde8cfa72e4caf488806ea7ea7d2fa8dba (patch) | |
| tree | 1d565e1ae9f59f7dfedff57bb30afbaec251d669 /lib/lru_cache.c | |
| parent | mm: invoke oom-killer from remaining unconverted page fault handlers (diff) | |
| download | linux-7960aedde8cfa72e4caf488806ea7ea7d2fa8dba.tar.xz linux-7960aedde8cfa72e4caf488806ea7ea7d2fa8dba.zip | |
mm: remove duplicated call of get_pfn_range_for_nid
When calculating pages in a node, for each zone in that node, we will
have
zone_spanned_pages_in_node
--> get_pfn_range_for_nid
zone_absent_pages_in_node
--> get_pfn_range_for_nid
That is to say, we call the get_pfn_range_for_nid to get start_pfn and
end_pfn of the node for MAX_NR_ZONES * 2 times. And this is totally
unnecessary if we call the get_pfn_range_for_nid before
zone_*_pages_in_node add two extra arguments node_start_pfn and
node_end_pfn for zone_*_pages_in_node, then we can remove the
get_pfn_range_in_node in zone_*_pages_in_node.
[akpm@linux-foundation.org: make definitions more readable]
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/lru_cache.c')
0 files changed, 0 insertions, 0 deletions