GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-25 08:02:56 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

android: binder: Don't get mm from task

Browse source 
Use binder_alloc struct's mm_struct rather than getting
a reference to the mm struct through get_task_mm to
avoid a potential deadlock between lru lock, task lock and
dentry lock, since a thread can be holding the task lock
and the dentry lock while trying to acquire the lru lock.

Acked-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sherry Yang 2017-10-20 20:58:58 -04:00 • committed by Greg Kroah-Hartman
parent 9d35593b4f
commit a0c2baaf81
2 changed files with 9 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/android/binder_alloc.h
View file

@ -100,7 +100,6 @@ struct binder_lru_page {
*/
struct binder_alloc {
struct mutex mutex;
struct task_struct *tsk;
struct vm_area_struct *vma;
struct mm_struct *vma_vm_mm;
void *buffer;