diff options
| author | Shaohua Li <shaohua.li@intel.com> | 2010-07-27 12:06:28 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-08-27 03:00:21 +0400 |
| commit | 660a293ea9be709b893d371fbc0328fcca33c33a (patch) | |
| tree | 4ef65b2eebb30e4d61ca685b23bac0678a24852f /mm/mempool.c | |
| parent | 9b861528a8012e7bc4d1f7bae07395b225331477 (diff) | |
| download | linux-660a293ea9be709b893d371fbc0328fcca33c33a.tar.xz | |
x86, mm: Make spurious_fault check explicitly check the PRESENT bit
pte_present() returns true even present bit isn't set but _PAGE_PROTNONE
(global bit) bit is set. While with CONFIG_DEBUG_PAGEALLOC, free pages have
global bit set but present bit clear. This patch makes we could catch
free pages access with CONFIG_DEBUG_PAGEALLOC enabled.
[ hpa: added a comment in the code as a warning to janitors ]
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
LKML-Reference: <1280217988.32400.75.camel@sli10-desk.sh.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'mm/mempool.c')
0 files changed, 0 insertions, 0 deletions