diff options
Diffstat (limited to 'drivers/android/binder_alloc.c')
| -rw-r--r-- | drivers/android/binder_alloc.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index b5022a7f6bae..f766e889d241 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -212,7 +212,7 @@ static int binder_update_page_range(struct binder_alloc *alloc, int allocate, mm = alloc->vma_vm_mm; if (mm) { - down_read(&mm->mmap_sem); + down_write(&mm->mmap_sem); vma = alloc->vma; } @@ -271,7 +271,7 @@ static int binder_update_page_range(struct binder_alloc *alloc, int allocate, /* vm_insert_page does not seem to increment the refcount */ } if (mm) { - up_read(&mm->mmap_sem); + up_write(&mm->mmap_sem); mmput(mm); } return 0; @@ -304,7 +304,7 @@ err_page_ptr_cleared: } err_no_vma: if (mm) { - up_read(&mm->mmap_sem); + up_write(&mm->mmap_sem); mmput(mm); } return vma ? -ENOMEM : -ESRCH; @@ -1037,6 +1037,12 @@ int binder_alloc_shrinker_init(void) return ret; } +void binder_alloc_shrinker_exit(void) +{ + unregister_shrinker(&binder_shrinker); + list_lru_destroy(&binder_alloc_lru); +} + /** * check_buffer() - verify that buffer/offset is safe to access * @alloc: binder_alloc for this proc |