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authorJohannes Weiner <hannes@cmpxchg.org>2020-06-04 02:01:38 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-04 06:09:47 +0300
commit6caa6a0703e03236f46461342e31ca53d0e3c091 (patch)
tree79bb588570b7b433981e78dcdd0c8769076a6798 /include
parent14235ab36019d169f5eb5bf0c064c5b12ca1bf46 (diff)
downloadlinux-6caa6a0703e03236f46461342e31ca53d0e3c091.tar.xz
mm: memcontrol: move out cgroup swaprate throttling
The cgroup swaprate throttling is about matching new anon allocations to the rate of available IO when that is being throttled. It's the io controller hooking into the VM, rather than a memory controller thing. Rename mem_cgroup_throttle_swaprate() to cgroup_throttle_swaprate(), and drop the @memcg argument which is only used to check whether the preceding page charge has succeeded and the fault is proceeding. We could decouple the call from mem_cgroup_try_charge() here as well, but that would cause unnecessary churn: the following patches convert all callsites to a new charge API and we'll decouple as we go along. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com> Reviewed-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Michal Hocko <mhocko@suse.com> Cc: Roman Gushchin <guro@fb.com> Cc: Balbir Singh <bsingharora@gmail.com> Link: http://lkml.kernel.org/r/20200508183105.225460-5-hannes@cmpxchg.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/swap.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index e92176fc8824..6cea1eb97d45 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -651,11 +651,9 @@ static inline int mem_cgroup_swappiness(struct mem_cgroup *mem)
#endif
#if defined(CONFIG_SWAP) && defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
-extern void mem_cgroup_throttle_swaprate(struct mem_cgroup *memcg, int node,
- gfp_t gfp_mask);
+extern void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask);
#else
-static inline void mem_cgroup_throttle_swaprate(struct mem_cgroup *memcg,
- int node, gfp_t gfp_mask)
+static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
{
}
#endif