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| author | Minchan Kim <minchan.kim@gmail.com> | 2010-01-08 14:43:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-11 09:34:07 -0800 |
| commit | 7f53a09ed40f08416b3029ada8f02252e7596c18 (patch) | |
| tree | 51d2bef1ca3a4667e5b9058b6f2b365edd101ebd | |
| parent | d2b34e20c1f431604e0dde910c3ff271c84ed706 (diff) | |
| download | linux-3.10-7f53a09ed40f08416b3029ada8f02252e7596c18.tar.gz linux-3.10-7f53a09ed40f08416b3029ada8f02252e7596c18.tar.bz2 linux-3.10-7f53a09ed40f08416b3029ada8f02252e7596c18.zip | |
smaps: fix wrong rss count
A long time ago we regarded zero page as file_rss and vm_normal_page
doesn't return NULL.
But now, we reinstated ZERO_PAGE and vm_normal_page's implementation can
return NULL in case of zero page. Also we don't count it with file_rss
any more.
Then, RSS and PSS can't be matched. For consistency, Let's ignore zero
page in smaps_pte_range.
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Acked-by: Matt Mackall <mpm@selenic.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/proc/task_mmu.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 47c03f4336b..f277c4a111c 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -361,12 +361,11 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, if (!pte_present(ptent)) continue; - mss->resident += PAGE_SIZE; - page = vm_normal_page(vma, addr, ptent); if (!page) continue; + mss->resident += PAGE_SIZE; /* Accumulate the size in pages that have been accessed. */ if (pte_young(ptent) || PageReferenced(page)) mss->referenced += PAGE_SIZE; |