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| author | Johannes Weiner <hannes@saeurebad.de> | 2008-05-23 13:04:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-24 09:56:07 -0700 |
| commit | f7232154198f928fc25f420d6190468212a7632a (patch) | |
| tree | 3216938f94face00fd6c6094bc8ccb66c2ef3619 /mm/page_alloc.c | |
| parent | f899b0adc6fc8f60a9db8b52f36f06fd1abeaf7c (diff) | |
| download | lwn-f7232154198f928fc25f420d6190468212a7632a.tar.gz lwn-f7232154198f928fc25f420d6190468212a7632a.zip | |
mm: don't drop a partial page in a zone's memory map size
In a zone's present pages number, account for all pages occupied by the
memory map, including a partial.
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
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 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 63835579323a..035300299f94 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3378,7 +3378,8 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat, * is used by this zone for memmap. This affects the watermark * and per-cpu initialisations */ - memmap_pages = (size * sizeof(struct page)) >> PAGE_SHIFT; + memmap_pages = + PAGE_ALIGN(size * sizeof(struct page)) >> PAGE_SHIFT; if (realsize >= memmap_pages) { realsize -= memmap_pages; printk(KERN_DEBUG |