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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-22 09:04:48 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-22 09:04:48 -0700 |
commit | 95211279c5ad00a317c98221d7e4365e02f20836 (patch) | |
tree | 2ddc8625378d2915b8c96392f3cf6663b705ed55 /include/linux/mm.h | |
parent | 5375871d432ae9fc581014ac117b96aaee3cd0c7 (diff) | |
parent | 12724850e8064f64b6223d26d78c0597c742c65a (diff) | |
download | linux-3.10-95211279c5ad00a317c98221d7e4365e02f20836.tar.gz linux-3.10-95211279c5ad00a317c98221d7e4365e02f20836.tar.bz2 linux-3.10-95211279c5ad00a317c98221d7e4365e02f20836.zip |
Merge branch 'akpm' (Andrew's patch-bomb)
Merge first batch of patches from Andrew Morton:
"A few misc things and all the MM queue"
* emailed from Andrew Morton <akpm@linux-foundation.org>: (92 commits)
memcg: avoid THP split in task migration
thp: add HPAGE_PMD_* definitions for !CONFIG_TRANSPARENT_HUGEPAGE
memcg: clean up existing move charge code
mm/memcontrol.c: remove unnecessary 'break' in mem_cgroup_read()
mm/memcontrol.c: remove redundant BUG_ON() in mem_cgroup_usage_unregister_event()
mm/memcontrol.c: s/stealed/stolen/
memcg: fix performance of mem_cgroup_begin_update_page_stat()
memcg: remove PCG_FILE_MAPPED
memcg: use new logic for page stat accounting
memcg: remove PCG_MOVE_LOCK flag from page_cgroup
memcg: simplify move_account() check
memcg: remove EXPORT_SYMBOL(mem_cgroup_update_page_stat)
memcg: kill dead prev_priority stubs
memcg: remove PCG_CACHE page_cgroup flag
memcg: let css_get_next() rely upon rcu_read_lock()
cgroup: revert ss_id_lock to spinlock
idr: make idr_get_next() good for rcu_read_lock()
memcg: remove unnecessary thp check in page stat accounting
memcg: remove redundant returns
memcg: enum lru_list lru
...
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r-- | include/linux/mm.h | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index b5bb54d6d66..ee67e326b6f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1040,6 +1040,9 @@ static inline int stack_guard_page_end(struct vm_area_struct *vma, !vma_growsup(vma->vm_next, addr); } +extern pid_t +vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group); + extern unsigned long move_page_tables(struct vm_area_struct *vma, unsigned long old_addr, struct vm_area_struct *new_vma, unsigned long new_addr, unsigned long len); @@ -1058,19 +1061,20 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, /* * per-process(per-mm_struct) statistics. */ -static inline void set_mm_counter(struct mm_struct *mm, int member, long value) -{ - atomic_long_set(&mm->rss_stat.count[member], value); -} - -#if defined(SPLIT_RSS_COUNTING) -unsigned long get_mm_counter(struct mm_struct *mm, int member); -#else static inline unsigned long get_mm_counter(struct mm_struct *mm, int member) { - return atomic_long_read(&mm->rss_stat.count[member]); -} + long val = atomic_long_read(&mm->rss_stat.count[member]); + +#ifdef SPLIT_RSS_COUNTING + /* + * counter is updated in asynchronous manner and may go to minus. + * But it's never be expected number for users. + */ + if (val < 0) + val = 0; #endif + return (unsigned long)val; +} static inline void add_mm_counter(struct mm_struct *mm, int member, long value) { @@ -1127,9 +1131,9 @@ static inline void setmax_mm_hiwater_rss(unsigned long *maxrss, } #if defined(SPLIT_RSS_COUNTING) -void sync_mm_rss(struct task_struct *task, struct mm_struct *mm); +void sync_mm_rss(struct mm_struct *mm); #else -static inline void sync_mm_rss(struct task_struct *task, struct mm_struct *mm) +static inline void sync_mm_rss(struct mm_struct *mm) { } #endif @@ -1291,8 +1295,6 @@ extern void get_pfn_range_for_nid(unsigned int nid, extern unsigned long find_min_pfn_with_active_regions(void); extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); -int add_from_early_node_map(struct range *range, int az, - int nr_range, int nid); extern void sparse_memory_present_with_active_regions(int nid); #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ |