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authorLinus Torvalds <torvalds@linux-foundation.org>2021-08-20 23:08:56 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-08-20 23:08:56 +0300
commited3bad2e4fd70047b729b64c78b97f88c4d33224 (patch)
treec79809d6d2de9e165f62c7a85c92032b75c0d21a /include
parent8ba9fbe1e4b8a28050c283792344ee8b6bc3465c (diff)
parentc7b1850dfb41d0b4154aca8dbc04777fbd75616f (diff)
downloadlinux-ed3bad2e4fd70047b729b64c78b97f88c4d33224.tar.xz
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton: "10 patches. Subsystems affected by this patch series: MAINTAINERS and mm (shmem, pagealloc, tracing, memcg, memory-failure, vmscan, kfence, and hugetlb)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: hugetlb: don't pass page cache pages to restore_reserve_on_error kfence: fix is_kfence_address() for addresses below KFENCE_POOL_SIZE mm: vmscan: fix missing psi annotation for node_reclaim() mm/hwpoison: retry with shake_page() for unhandlable pages mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim MAINTAINERS: update ClangBuiltLinux IRC chat mmflags.h: add missing __GFP_ZEROTAGS and __GFP_SKIP_KASAN_POISON names mm/page_alloc: don't corrupt pcppage_migratetype Revert "mm: swap: check if swap backing device is congested or not" Revert "mm/shmem: fix shmem_swapin() race with swapoff"
Diffstat (limited to 'include')
-rw-r--r--include/linux/kfence.h7
-rw-r--r--include/linux/memcontrol.h29
-rw-r--r--include/trace/events/mmflags.h4
3 files changed, 22 insertions, 18 deletions
diff --git a/include/linux/kfence.h b/include/linux/kfence.h
index a70d1ea03532..3fe6dd8a18c1 100644
--- a/include/linux/kfence.h
+++ b/include/linux/kfence.h
@@ -51,10 +51,11 @@ extern atomic_t kfence_allocation_gate;
static __always_inline bool is_kfence_address(const void *addr)
{
/*
- * The non-NULL check is required in case the __kfence_pool pointer was
- * never initialized; keep it in the slow-path after the range-check.
+ * The __kfence_pool != NULL check is required to deal with the case
+ * where __kfence_pool == NULL && addr < KFENCE_POOL_SIZE. Keep it in
+ * the slow-path after the range-check!
*/
- return unlikely((unsigned long)((char *)addr - __kfence_pool) < KFENCE_POOL_SIZE && addr);
+ return unlikely((unsigned long)((char *)addr - __kfence_pool) < KFENCE_POOL_SIZE && __kfence_pool);
}
/**
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index bfe5c486f4ad..24797929d8a1 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -612,12 +612,15 @@ static inline bool mem_cgroup_disabled(void)
return !cgroup_subsys_enabled(memory_cgrp_subsys);
}
-static inline unsigned long mem_cgroup_protection(struct mem_cgroup *root,
- struct mem_cgroup *memcg,
- bool in_low_reclaim)
+static inline void mem_cgroup_protection(struct mem_cgroup *root,
+ struct mem_cgroup *memcg,
+ unsigned long *min,
+ unsigned long *low)
{
+ *min = *low = 0;
+
if (mem_cgroup_disabled())
- return 0;
+ return;
/*
* There is no reclaim protection applied to a targeted reclaim.
@@ -653,13 +656,10 @@ static inline unsigned long mem_cgroup_protection(struct mem_cgroup *root,
*
*/
if (root == memcg)
- return 0;
-
- if (in_low_reclaim)
- return READ_ONCE(memcg->memory.emin);
+ return;
- return max(READ_ONCE(memcg->memory.emin),
- READ_ONCE(memcg->memory.elow));
+ *min = READ_ONCE(memcg->memory.emin);
+ *low = READ_ONCE(memcg->memory.elow);
}
void mem_cgroup_calculate_protection(struct mem_cgroup *root,
@@ -1147,11 +1147,12 @@ static inline void memcg_memory_event_mm(struct mm_struct *mm,
{
}
-static inline unsigned long mem_cgroup_protection(struct mem_cgroup *root,
- struct mem_cgroup *memcg,
- bool in_low_reclaim)
+static inline void mem_cgroup_protection(struct mem_cgroup *root,
+ struct mem_cgroup *memcg,
+ unsigned long *min,
+ unsigned long *low)
{
- return 0;
+ *min = *low = 0;
}
static inline void mem_cgroup_calculate_protection(struct mem_cgroup *root,
diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h
index 390270e00a1d..f160484afc5c 100644
--- a/include/trace/events/mmflags.h
+++ b/include/trace/events/mmflags.h
@@ -48,7 +48,9 @@
{(unsigned long)__GFP_WRITE, "__GFP_WRITE"}, \
{(unsigned long)__GFP_RECLAIM, "__GFP_RECLAIM"}, \
{(unsigned long)__GFP_DIRECT_RECLAIM, "__GFP_DIRECT_RECLAIM"},\
- {(unsigned long)__GFP_KSWAPD_RECLAIM, "__GFP_KSWAPD_RECLAIM"}\
+ {(unsigned long)__GFP_KSWAPD_RECLAIM, "__GFP_KSWAPD_RECLAIM"},\
+ {(unsigned long)__GFP_ZEROTAGS, "__GFP_ZEROTAGS"}, \
+ {(unsigned long)__GFP_SKIP_KASAN_POISON,"__GFP_SKIP_KASAN_POISON"}\
#define show_gfp_flags(flags) \
(flags) ? __print_flags(flags, "|", \