diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/mmap.c | 4 | ||||
| -rw-r--r-- | mm/nommu.c | 3 | ||||
| -rw-r--r-- | mm/util.c | 13 |
3 files changed, 15 insertions, 5 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 3d3e224be77..803048e9c56 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -179,14 +179,12 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin) goto error; } - allowed = (totalram_pages - hugetlb_total_pages()) - * sysctl_overcommit_ratio / 100; + allowed = vm_commit_limit(); /* * Reserve some for root */ if (!cap_sys_admin) allowed -= sysctl_admin_reserve_kbytes >> (PAGE_SHIFT - 10); - allowed += total_swap_pages; /* * Don't let a single process grow so big a user can't recover diff --git a/mm/nommu.c b/mm/nommu.c index ecd1f158548..d8a957bb9e3 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1948,13 +1948,12 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin) goto error; } - allowed = totalram_pages * sysctl_overcommit_ratio / 100; + allowed = vm_commit_limit(); /* * Reserve some 3% for root */ if (!cap_sys_admin) allowed -= sysctl_admin_reserve_kbytes >> (PAGE_SHIFT - 10); - allowed += total_swap_pages; /* * Don't let a single process grow so big a user can't recover diff --git a/mm/util.c b/mm/util.c index eaf63fc2c92..f7bc2096071 100644 --- a/mm/util.c +++ b/mm/util.c @@ -7,6 +7,9 @@ #include <linux/security.h> #include <linux/swap.h> #include <linux/swapops.h> +#include <linux/mman.h> +#include <linux/hugetlb.h> + #include <asm/uaccess.h> #include "internal.h" @@ -398,6 +401,16 @@ struct address_space *page_mapping(struct page *page) return mapping; } +/* + * Committed memory limit enforced when OVERCOMMIT_NEVER policy is used + */ +unsigned long vm_commit_limit(void) +{ + return ((totalram_pages - hugetlb_total_pages()) + * sysctl_overcommit_ratio / 100) + total_swap_pages; +} + + /* Tracepoints definitions. */ EXPORT_TRACEPOINT_SYMBOL(kmalloc); EXPORT_TRACEPOINT_SYMBOL(kmem_cache_alloc); |