Eric Lee / linux-smarc-t335x-v3.2

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Commit 4779cb31c0ee3b355116745edca3f3e5fe865553

Authored by Andi Kleen
1 parent e43c3afb36
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

HWPOISON: Fix page count leak in hwpoison late kill in do_swap_page 

When returning due to a poisoned page drop the page count.

It wasn't a fatal problem because noone cares about the page count
on a poisoned page (except when it wraps), but it's cleaner to fix it.

Pointed out by Linus.

Signed-off-by: Andi Kleen <ak@linux.intel.com>

Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff

... ... @@ -2539,7 +2539,7 @@
2539 2539 } else if (PageHWPoison(page)) {
2540 2540 ret = VM_FAULT_HWPOISON;
2541 2541 delayacct_clear_flag(DELAYACCT_PF_SWAPIN);
2542   - goto out;
  2542 + goto out_release;
2543 2543 }
2544 2544  
2545 2545 lock_page(page);
... ... @@ -2611,6 +2611,7 @@
2611 2611 pte_unmap_unlock(page_table, ptl);
2612 2612 out_page:
2613 2613 unlock_page(page);
  2614 +out_release:
2614 2615 page_cache_release(page);
2615 2616 return ret;
2616 2617 }