diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-05-23 20:57:31 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-05-23 20:57:31 +0100 |
| commit | a2ab67fae1ab9226679495a8d260f4e6555efc5f (patch) | |
| tree | f7de683c9c8ff0869a7e11f1d40802145d05f5b4 /mm/nommu.c | |
| parent | 6d0485a99366d4e0e7e725f14995c74cb7ca4499 (diff) | |
| parent | 135cad366b4e7d6a79f6369f6cb5b721985aa62f (diff) | |
Merge branch 'for-rmk-devel' of git://git.pengutronix.de/git/imx/linux-2.6 into devel
Conflicts:
arch/arm/Kconfig
arch/arm/Makefile
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 72eda4aee2c..809998aa7b5 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -62,7 +62,7 @@ void *high_memory; struct page *mem_map; unsigned long max_mapnr; unsigned long num_physpages; -atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0); +struct percpu_counter vm_committed_as; int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */ int sysctl_overcommit_ratio = 50; /* default is 50% */ int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT; @@ -463,6 +463,10 @@ SYSCALL_DEFINE1(brk, unsigned long, brk) */ void __init mmap_init(void) { + int ret; + + ret = percpu_counter_init(&vm_committed_as, 0); + VM_BUG_ON(ret); vm_region_jar = KMEM_CACHE(vm_region, SLAB_PANIC); } @@ -1847,12 +1851,9 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin) if (mm) allowed -= mm->total_vm / 32; - /* - * cast `allowed' as a signed long because vm_committed_space - * sometimes has a negative value - */ - if (atomic_long_read(&vm_committed_space) < (long)allowed) + if (percpu_counter_read_positive(&vm_committed_as) < allowed) return 0; + error: vm_unacct_memory(pages); |