diff options
| -rw-r--r-- | drivers/android/binder_alloc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 000dd4d145ba..6389467670a0 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -932,7 +932,7 @@ enum lru_status binder_alloc_free_page(struct list_head *item, if (!mmget_not_zero(alloc->vma_vm_mm)) goto err_mmget; mm = alloc->vma_vm_mm; - if (!down_write_trylock(&mm->mmap_sem)) + if (!down_read_trylock(&mm->mmap_sem)) goto err_down_write_mmap_sem_failed; } @@ -946,7 +946,7 @@ enum lru_status binder_alloc_free_page(struct list_head *item, trace_binder_unmap_user_end(alloc, index); - up_write(&mm->mmap_sem); + up_read(&mm->mmap_sem); mmput(mm); } |