Messages in this thread | | | Date | Tue, 4 Apr 2017 11:41:48 +0200 | From | Michal Hocko <> | Subject | Re: [PATCH 1/4] mm/vmalloc: allow to call vfree() in atomic context |
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On Thu 30-03-17 17:48:39, Andrey Ryabinin wrote: > From: Andrey Ryabinin <aryabinin@virtuozzo.com> > Subject: mm/vmalloc: allow to call vfree() in atomic context fix > > Don't spawn worker if we already purging. > > Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
I would rather put this into a separate patch. Ideally with some numners as this is an optimization...
> --- > mm/vmalloc.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/mm/vmalloc.c b/mm/vmalloc.c > index ea1b4ab..88168b8 100644 > --- a/mm/vmalloc.c > +++ b/mm/vmalloc.c > @@ -737,7 +737,8 @@ static void free_vmap_area_noflush(struct vmap_area *va) > /* After this point, we may free va at any time */ > llist_add(&va->purge_list, &vmap_purge_list); > > - if (unlikely(nr_lazy > lazy_max_pages())) > + if (unlikely(nr_lazy > lazy_max_pages()) && > + !mutex_is_locked(&vmap_purge_lock)) > schedule_work(&purge_vmap_work); > } > > -- > 2.10.2 >
-- Michal Hocko SUSE Labs
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