diff options
| -rw-r--r-- | arch/ia64/mm/fault.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c index af7eb087dca7..d98ec49570b8 100644 --- a/arch/ia64/mm/fault.c +++ b/arch/ia64/mm/fault.c | |||
| @@ -60,6 +60,9 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re | |||
| 60 | struct siginfo si; | 60 | struct siginfo si; |
| 61 | unsigned long mask; | 61 | unsigned long mask; |
| 62 | 62 | ||
| 63 | /* mmap_sem is performance critical.... */ | ||
| 64 | prefetchw(&mm->mmap_sem); | ||
| 65 | |||
| 63 | /* | 66 | /* |
| 64 | * If we're in an interrupt or have no user context, we must not take the fault.. | 67 | * If we're in an interrupt or have no user context, we must not take the fault.. |
| 65 | */ | 68 | */ |