| commit | d15f107d97bd74c74d8f5144843d372666ddbdac | [log] [tgz] |
|---|---|---|
| author | Andi Kleen <andi@firstfloor.org> | Wed Dec 16 12:20:00 2009 +0100 |
| committer | Andi Kleen <ak@linux.intel.com> | Wed Dec 16 12:20:00 2009 +0100 |
| tree | 6c12d3c738c3118ccab724b5b984fc07c7e58082 | |
| parent | 1bfe5febe34d2be2120803c10720e179186357c9 [diff] |
HWPOISON: Use get_user_page_fast in hwpoison madvise The previous version didn't take the mmap_sem before calling gup(), which is racy. Use get_user_pages_fast() instead which doesn't need any locks. This is also faster of course, but then it doesn't really matter because this is just a testing path. Based on report from Nick Piggin. Cc: npiggin@suse.de Signed-off-by: Andi Kleen <ak@linux.intel.com>