On Sun 09-06-19 12:07:36, Konstantin Khlebnikov wrote: [...] > > > diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c > > > index 2bf210229daf..781879a91e3b 100644 > > > --- a/fs/proc/task_mmu.c > > > +++ b/fs/proc/task_mmu.c > > > @@ -832,7 +832,10 @@ static int show_smaps_rollup(struct seq_file *m, void *v) > > > memset(&mss, 0, sizeof(mss)); > > > - down_read(&mm->mmap_sem); > > > + ret = down_read_killable(&mm->mmap_sem); > > > + if (ret) > > > + goto out_put_mm; > > > > Why not ret = -EINTR. The seq_file code seems to be handling all errors > > AFAICS. > > > > I've missed your comment. Sorry. > > down_read_killable returns 0 for success and exactly -EINTR for failure. You are right of course. I must have misread the code at the time. Sorry about that. -- Michal Hocko SUSE Labs
