diff options
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 3a45b7dd0a09..ccbdb22147bb 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -526,8 +526,18 @@ long do_get_mempolicy(int *policy, nodemask_t *nmask, struct mempolicy *pol = current->mempolicy; cpuset_update_task_memory_state(); - if (flags & ~(unsigned long)(MPOL_F_NODE|MPOL_F_ADDR)) + if (flags & + ~(unsigned long)(MPOL_F_NODE|MPOL_F_ADDR|MPOL_F_MEMS_ALLOWED)) return -EINVAL; + + if (flags & MPOL_F_MEMS_ALLOWED) { + if (flags & (MPOL_F_NODE|MPOL_F_ADDR)) + return -EINVAL; + *policy = 0; /* just so it's initialized */ + *nmask = cpuset_current_mems_allowed; + return 0; + } + if (flags & MPOL_F_ADDR) { down_read(&mm->mmap_sem); vma = find_vma_intersection(mm, addr, addr+1); |