diff options
| -rw-r--r-- | mm/swap_state.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c index a5dae40523ab..88a16969027d 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -788,6 +788,8 @@ static void swap_ra_info(struct vm_fault *vmf, lpfn = fpfn - left; rpfn = fpfn + win - left; } + if ((long)lpfn < 0) + lpfn = 0; start = max3(lpfn, PFN_DOWN(vma->vm_start), PFN_DOWN(faddr & PMD_MASK)); end = min3(rpfn, PFN_DOWN(vma->vm_end), |