On Mon, Mar 19, 2018 at 06:32:10PM +0300, Kirill Tkhai wrote: > From: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> > > In case of memory deficit and low percpu memory pages, > pcpu_balance_workfn() takes pcpu_alloc_mutex for a long > time (as it makes memory allocations itself and waits > for memory reclaim). If tasks doing pcpu_alloc() are > choosen by OOM killer, they can't exit, because they > are waiting for the mutex. > > The patch makes pcpu_alloc() to care about killing signal > and use mutex_lock_killable(), when it's allowed by GFP > flags. This guarantees, a task does not miss SIGKILL > from OOM killer. > > Signed-off-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> Applied to percpu/for-4.16-fixes. Thanks. -- tejun
