diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-09-04 13:02:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-04 13:02:35 +0200 |
| commit | 42390cdec5f6e6e2ee54f308474a6ef7dd16aa5c (patch) | |
| tree | e9684c84f53272319a5acd4b9c86503f30274a51 /mm/vmstat.c | |
| parent | 11c231a962c740b3216eb6565149ae5a7944cba7 (diff) | |
| parent | d210baf53b699fc61aa891c177b71d7082d3b957 (diff) | |
Merge branch 'linus' into x86/x2apic
Conflicts:
arch/x86/kernel/cpu/cyrix.c
include/asm-x86/cpufeature.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index b0d08e667ec..d7826af2fb0 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -516,9 +516,26 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m, continue; page = pfn_to_page(pfn); +#ifdef CONFIG_ARCH_FLATMEM_HAS_HOLES + /* + * Ordinarily, memory holes in flatmem still have a valid + * memmap for the PFN range. However, an architecture for + * embedded systems (e.g. ARM) can free up the memmap backing + * holes to save memory on the assumption the memmap is + * never used. The page_zone linkages are then broken even + * though pfn_valid() returns true. Skip the page if the + * linkages are broken. Even if this test passed, the impact + * is that the counters for the movable type are off but + * fragmentation monitoring is likely meaningless on small + * systems. + */ + if (page_zone(page) != zone) + continue; +#endif mtype = get_pageblock_migratetype(page); - count[mtype]++; + if (mtype < MIGRATE_TYPES) + count[mtype]++; } /* Print counts */ |