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| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-10-19 08:15:01 +0200 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2009-10-19 08:15:01 +0200 |
| commit | 7456b0405d8fc063c49628f969cdb23be060fc80 (patch) | |
| tree | b1216354d6940b800128b224e2d801ed9232fa02 /mm/memory-failure.c | |
| parent | 65a64464349883891e21e74af16c05d6e1eeb4e9 (diff) | |
| download | kernel-common-7456b0405d8fc063c49628f969cdb23be060fc80.tar.gz kernel-common-7456b0405d8fc063c49628f969cdb23be060fc80.tar.bz2 kernel-common-7456b0405d8fc063c49628f969cdb23be060fc80.zip | |
HWPOISON: fix invalid page count in printk output
The madvise injector already holds a reference when passing in a page
to the memory-failure code. The code corrects for this additional reference
for its checks, but the final printk output didn't. Fix that.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e354b9f2f389..dacc64183874 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -613,13 +613,16 @@ static int page_action(struct page_state *ps, struct page *p, unsigned long pfn, int ref) { int result; + int count; result = ps->action(p, pfn); action_result(pfn, ps->msg, result); - if (page_count(p) != 1 + ref) + + count = page_count(p) - 1 - ref; + if (count != 0) printk(KERN_ERR "MCE %#lx: %s page still referenced by %d users\n", - pfn, ps->msg, page_count(p) - 1); + pfn, ps->msg, count); /* Could do more checks here if page looks ok */ /* |