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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-14 10:07:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-14 10:07:08 +0200 |
| commit | 05fa34dcdb34d2a496ef89d8f361ca697643edec (patch) | |
| tree | 1d5bddce044e2646776c5a315eec4211be3f3410 /mm/memcontrol.c | |
| parent | f7dbcd17703157c0063c619714a765e3116caa83 (diff) | |
| parent | 856deb866d16e29bd65952e0289066f6078af773 (diff) | |
Merge 5.9-rc5 into char-misc-next
We want the char/misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index b807952b4d431..cfa6cbad21d55 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6774,6 +6774,9 @@ static void uncharge_batch(const struct uncharge_gather *ug) __this_cpu_add(ug->memcg->vmstats_percpu->nr_page_events, ug->nr_pages); memcg_check_events(ug->memcg, ug->dummy_page); local_irq_restore(flags); + + /* drop reference from uncharge_page */ + css_put(&ug->memcg->css); } static void uncharge_page(struct page *page, struct uncharge_gather *ug) @@ -6797,6 +6800,9 @@ static void uncharge_page(struct page *page, struct uncharge_gather *ug) uncharge_gather_clear(ug); } ug->memcg = page->mem_cgroup; + + /* pairs with css_put in uncharge_batch */ + css_get(&ug->memcg->css); } nr_pages = compound_nr(page); |