diff options
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/gup.c b/mm/gup.c index c3014669988b..1d84291543fd 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1176,7 +1176,8 @@ static bool vma_permits_fault(struct vm_area_struct *vma, * @address: user address * @fault_flags:flags to pass down to handle_mm_fault() * @unlocked: did we unlock the mmap_sem while retrying, maybe NULL if caller - * does not allow retry + * does not allow retry. If NULL, the caller must guarantee + * that fault_flags does not contain FAULT_FLAG_ALLOW_RETRY. * * This is meant to be called in the specific scenario where for locking reasons * we try to access user memory in atomic context (within a pagefault_disable() |