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Merge branch 'akpm' (patches from Andrew)

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Merge patch-bomb from Andrew Morton:

 - inotify tweaks

 - some ocfs2 updates (many more are awaiting review)

 - various misc bits

 - kernel/watchdog.c updates

 - Some of mm.  I have a huge number of MM patches this time and quite a
   lot of it is quite difficult and much will be held over to next time.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits)
  selftests: vm: add tests for lock on fault
  mm: mlock: add mlock flags to enable VM_LOCKONFAULT usage
  mm: introduce VM_LOCKONFAULT
  mm: mlock: add new mlock system call
  mm: mlock: refactor mlock, munlock, and munlockall code
  kasan: always taint kernel on report
  mm, slub, kasan: enable user tracking by default with KASAN=y
  kasan: use IS_ALIGNED in memory_is_poisoned_8()
  kasan: Fix a type conversion error
  lib: test_kasan: add some testcases
  kasan: update reference to kasan prototype repo
  kasan: move KASAN_SANITIZE in arch/x86/boot/Makefile
  kasan: various fixes in documentation
  kasan: update log messages
  kasan: accurately determine the type of the bad access
  kasan: update reported bug types for kernel memory accesses
  kasan: update reported bug types for not user nor kernel memory accesses
  mm/kasan: prevent deadlock in kasan reporting
  mm/kasan: don't use kasan shadow pointer in generic functions
  mm/kasan: MODULE_VADDR is not available on all archs
  ...
This commit is contained in:
Linus Torvalds
2015-11-05 23:10:54 -08:00
parent ea5c58e70c b3b0d09c7a
commit 2e3078af2c
127 changed files with 3104 additions and 1362 deletions
Download Patch File Download Diff File Expand all files Collapse all files

155
include/linux/memcontrol.h
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@@ -301,8 +301,7 @@ void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg);
void mem_cgroup_uncharge(struct page *page);
void mem_cgroup_uncharge_list(struct list_head *page_list);
void mem_cgroup_migrate(struct page *oldpage, struct page *newpage,
bool lrucare);
void mem_cgroup_replace_page(struct page *oldpage, struct page *newpage);
struct lruvec *mem_cgroup_zone_lruvec(struct zone *, struct mem_cgroup *);
struct lruvec *mem_cgroup_page_lruvec(struct page *, struct zone *);
@@ -384,7 +383,7 @@ unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
return mz->lru_size[lru];
}
static inline int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
static inline bool mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
{
unsigned long inactive_ratio;
unsigned long inactive;
@@ -403,24 +402,26 @@ static inline int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
return inactive * inactive_ratio < active;
}
void mem_cgroup_handle_over_high(void);
void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
struct task_struct *p);
static inline void mem_cgroup_oom_enable(void)
{
WARN_ON(current->memcg_oom.may_oom);
current->memcg_oom.may_oom = 1;
WARN_ON(current->memcg_may_oom);
current->memcg_may_oom = 1;
}
static inline void mem_cgroup_oom_disable(void)
{
WARN_ON(!current->memcg_oom.may_oom);
current->memcg_oom.may_oom = 0;
WARN_ON(!current->memcg_may_oom);
current->memcg_may_oom = 0;
}
static inline bool task_in_memcg_oom(struct task_struct *p)
{
return p->memcg_oom.memcg;
return p->memcg_in_oom;
}
bool mem_cgroup_oom_synchronize(bool wait);
@@ -537,9 +538,7 @@ static inline void mem_cgroup_uncharge_list(struct list_head *page_list)
{
}
static inline void mem_cgroup_migrate(struct page *oldpage,
struct page *newpage,
bool lrucare)
static inline void mem_cgroup_replace_page(struct page *old, struct page *new)
{
}
@@ -585,10 +584,10 @@ static inline bool mem_cgroup_disabled(void)
return true;
}
static inline int
static inline bool
mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
{
return 1;
return true;
}
static inline bool mem_cgroup_lruvec_online(struct lruvec *lruvec)
@@ -622,6 +621,10 @@ static inline void mem_cgroup_end_page_stat(struct mem_cgroup *memcg)
{
}
static inline void mem_cgroup_handle_over_high(void)
{
}
static inline void mem_cgroup_oom_enable(void)
{
}
@@ -748,11 +751,10 @@ static inline bool memcg_kmem_is_active(struct mem_cgroup *memcg)
* conditions, but because they are pretty simple, they are expected to be
* fast.
*/
bool __memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg,
int order);
void __memcg_kmem_commit_charge(struct page *page,
struct mem_cgroup *memcg, int order);
void __memcg_kmem_uncharge_pages(struct page *page, int order);
int __memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order,
struct mem_cgroup *memcg);
int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order);
void __memcg_kmem_uncharge(struct page *page, int order);
/*
* helper for acessing a memcg's index. It will be used as an index in the
@@ -767,77 +769,42 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg)
struct kmem_cache *__memcg_kmem_get_cache(struct kmem_cache *cachep);
void __memcg_kmem_put_cache(struct kmem_cache *cachep);
struct mem_cgroup *__mem_cgroup_from_kmem(void *ptr);
int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp,
unsigned long nr_pages);
void memcg_uncharge_kmem(struct mem_cgroup *memcg, unsigned long nr_pages);
/**
* memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed.
* @gfp: the gfp allocation flags.
* @memcg: a pointer to the memcg this was charged against.
* @order: allocation order.
*
* returns true if the memcg where the current task belongs can hold this
* allocation.
*
* We return true automatically if this allocation is not to be accounted to
* any memcg.
*/
static inline bool
memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order)
static inline bool __memcg_kmem_bypass(gfp_t gfp)
{
if (!memcg_kmem_enabled())
return true;
if (gfp & __GFP_NOACCOUNT)
return true;
/*
* __GFP_NOFAIL allocations will move on even if charging is not
* possible. Therefore we don't even try, and have this allocation
* unaccounted. We could in theory charge it forcibly, but we hope
* those allocations are rare, and won't be worth the trouble.
*/
if (gfp & __GFP_NOFAIL)
return true;
if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD))
return true;
/* If the test is dying, just let it go. */
if (unlikely(fatal_signal_pending(current)))
return true;
return __memcg_kmem_newpage_charge(gfp, memcg, order);
return false;
}
/**
* memcg_kmem_uncharge_pages: uncharge pages from memcg
* @page: pointer to struct page being freed
* @order: allocation order.
* memcg_kmem_charge: charge a kmem page
* @page: page to charge
* @gfp: reclaim mode
* @order: allocation order
*
* Returns 0 on success, an error code on failure.
*/
static inline void
memcg_kmem_uncharge_pages(struct page *page, int order)
static __always_inline int memcg_kmem_charge(struct page *page,
gfp_t gfp, int order)
{
if (__memcg_kmem_bypass(gfp))
return 0;
return __memcg_kmem_charge(page, gfp, order);
}
/**
* memcg_kmem_uncharge: uncharge a kmem page
* @page: page to uncharge
* @order: allocation order
*/
static __always_inline void memcg_kmem_uncharge(struct page *page, int order)
{
if (memcg_kmem_enabled())
__memcg_kmem_uncharge_pages(page, order);
}
/**
* memcg_kmem_commit_charge: embeds correct memcg in a page
* @page: pointer to struct page recently allocated
* @memcg: the memcg structure we charged against
* @order: allocation order.
*
* Needs to be called after memcg_kmem_newpage_charge, regardless of success or
* failure of the allocation. if @page is NULL, this function will revert the
* charges. Otherwise, it will commit @page to @memcg.
*/
static inline void
memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order)
{
if (memcg_kmem_enabled() && memcg)
__memcg_kmem_commit_charge(page, memcg, order);
__memcg_kmem_uncharge(page, order);
}
/**
@@ -850,17 +817,8 @@ memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order)
static __always_inline struct kmem_cache *
memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp)
{
if (!memcg_kmem_enabled())
if (__memcg_kmem_bypass(gfp))
return cachep;
if (gfp & __GFP_NOACCOUNT)
return cachep;
if (gfp & __GFP_NOFAIL)
return cachep;
if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD))
return cachep;
if (unlikely(fatal_signal_pending(current)))
return cachep;
return __memcg_kmem_get_cache(cachep);
}
@@ -869,13 +827,6 @@ static __always_inline void memcg_kmem_put_cache(struct kmem_cache *cachep)
if (memcg_kmem_enabled())
__memcg_kmem_put_cache(cachep);
}
static __always_inline struct mem_cgroup *mem_cgroup_from_kmem(void *ptr)
{
if (!memcg_kmem_enabled())
return NULL;
return __mem_cgroup_from_kmem(ptr);
}
#else
#define for_each_memcg_cache_index(_idx) \
for (; NULL; )
@@ -890,18 +841,12 @@ static inline bool memcg_kmem_is_active(struct mem_cgroup *memcg)
return false;
}
static inline bool
memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order)
static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order)
{
return true;
return 0;
}
static inline void memcg_kmem_uncharge_pages(struct page *page, int order)
{
}
static inline void
memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order)
static inline void memcg_kmem_uncharge(struct page *page, int order)
{
}
@@ -927,11 +872,5 @@ memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp)
static inline void memcg_kmem_put_cache(struct kmem_cache *cachep)
{
}
static inline struct mem_cgroup *mem_cgroup_from_kmem(void *ptr)
{
return NULL;
}
#endif /* CONFIG_MEMCG_KMEM */
#endif /* _LINUX_MEMCONTROL_H */