diff options
| author | Roman Gushchin <[email protected]> | 2020-08-06 23:21:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-08-07 11:33:24 -0700 |
| commit | 0f876e4dc55db5fafef774917fd66e1373c0f390 (patch) | |
| tree | dc54c6614009fe0085a4ae87c6bbacff1c2bdd9a /include/linux | |
| parent | 4330a26bc4527f1d8918c398ebc983574f761cca (diff) | |
mm: memcg/slab: move memcg_kmem_bypass() to memcontrol.h
To make the memcg_kmem_bypass() function available outside of the
memcontrol.c, let's move it to memcontrol.h. The function is small and
nicely fits into static inline sort of functions.
It will be used from the slab code.
Signed-off-by: Roman Gushchin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Reviewed-by: Vlastimil Babka <[email protected]>
Reviewed-by: Shakeel Butt <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Tejun Heo <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/memcontrol.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index b845e908e76e..83e2858aecf2 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1440,6 +1440,18 @@ static inline bool memcg_kmem_enabled(void) return static_branch_unlikely(&memcg_kmem_enabled_key); } +static inline bool memcg_kmem_bypass(void) +{ + if (in_interrupt()) + return true; + + /* Allow remote memcg charging in kthread contexts. */ + if ((!current->mm || (current->flags & PF_KTHREAD)) && + !current->active_memcg) + return true; + return false; +} + static inline int memcg_kmem_charge_page(struct page *page, gfp_t gfp, int order) { |