diff options
Diffstat (limited to 'mm/fremap.c')
| -rw-r--r-- | mm/fremap.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/mm/fremap.c b/mm/fremap.c index 0cd4c11488ed..87da3590c61e 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -129,7 +129,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, struct vm_area_struct *vma; int err = -EINVAL; int has_write_lock = 0; - vm_flags_t vm_flags; + vm_flags_t vm_flags = 0; if (prot) return err; @@ -204,10 +204,8 @@ get_write_lock: unsigned long addr; struct file *file = get_file(vma->vm_file); - vm_flags = vma->vm_flags; - if (!(flags & MAP_NONBLOCK)) - vm_flags |= VM_POPULATE; - addr = mmap_region(file, start, size, vm_flags, pgoff); + addr = mmap_region(file, start, size, + vma->vm_flags, pgoff); fput(file); if (IS_ERR_VALUE(addr)) { err = addr; @@ -226,12 +224,6 @@ get_write_lock: mutex_unlock(&mapping->i_mmap_mutex); } - if (!(flags & MAP_NONBLOCK) && !(vma->vm_flags & VM_POPULATE)) { - if (!has_write_lock) - goto get_write_lock; - vma->vm_flags |= VM_POPULATE; - } - if (vma->vm_flags & VM_LOCKED) { /* * drop PG_Mlocked flag for over-mapped range @@ -254,7 +246,8 @@ get_write_lock: */ out: - vm_flags = vma->vm_flags; + if (vma) + vm_flags = vma->vm_flags; if (likely(!has_write_lock)) up_read(&mm->mmap_sem); else |