diff options
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 3f7495c75228c2..04dc9e28491835 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -796,15 +796,17 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr, mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC; if (flags & MAP_LOCKED) { - if (!capable(CAP_IPC_LOCK)) + if (!can_do_mlock()) return -EPERM; vm_flags |= VM_LOCKED; } /* mlock MCL_FUTURE? */ if (vm_flags & VM_LOCKED) { - unsigned long locked = mm->locked_vm << PAGE_SHIFT; + unsigned long locked, lock_limit; + locked = mm->locked_vm << PAGE_SHIFT; + lock_limit = current->rlim[RLIMIT_MEMLOCK].rlim_cur; locked += len; - if (locked > current->rlim[RLIMIT_MEMLOCK].rlim_cur) + if (locked > lock_limit && !capable(CAP_IPC_LOCK)) return -EAGAIN; } @@ -1625,9 +1627,11 @@ unsigned long do_brk(unsigned long addr, unsigned long len) * mlock MCL_FUTURE? */ if (mm->def_flags & VM_LOCKED) { - unsigned long locked = mm->locked_vm << PAGE_SHIFT; + unsigned long locked, lock_limit; + locked = mm->locked_vm << PAGE_SHIFT; + lock_limit = current->rlim[RLIMIT_MEMLOCK].rlim_cur; locked += len; - if (locked > current->rlim[RLIMIT_MEMLOCK].rlim_cur) + if (locked > lock_limit && !capable(CAP_IPC_LOCK)) return -EAGAIN; } |