[PATCH 2/2] android: binder: Don't get mm from task

Greg Kroah-Hartman gregkh at linuxfoundation.org
Fri Oct 20 13:41:53 UTC 2017


On Sat, Sep 16, 2017 at 01:11:57AM -0400, Sherry Yang wrote:
> 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 at android.com>
> Signed-off-by: Sherry Yang <sherryy at android.com>
> ---
>  drivers/android/binder_alloc.c | 22 +++++++++-------------
>  drivers/android/binder_alloc.h |  1 -
>  2 files changed, 9 insertions(+), 14 deletions(-)

This seems to be needed for 4.14-final, so can you refresh it against my
char-misc-linus branch and resend it?

thanks,

greg k-h


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