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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 <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20200623174037.3951353-12-guro@fb.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roman Gushchin 2020-08-06 23:21:06 -07:00 committed by Linus Torvalds
parent 4330a26bc4
commit 0f876e4dc5
2 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/linux/memcontrol.h
View File

@ -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)
{

12
mm/memcontrol.c
View File

@ -2945,18 +2945,6 @@ static void memcg_schedule_kmem_cache_create(struct mem_cgroup *memcg,
queue_work(memcg_kmem_cache_wq, &cw->work);
}
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;
}
/**
* memcg_kmem_get_cache: select the correct per-memcg cache for allocation
* @cachep: the original global kmem cache