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| author | Ingo Molnar <mingo@elte.hu> | 2009-05-18 07:37:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-18 07:37:49 +0200 |
| commit | dc3f81b129b5439ba7bac265bbc6a51a39275dae (patch) | |
| tree | 216030731d911249496d2e97206cd61431e31c89 /mm/mmap.c | |
| parent | perf_counter, x86: fix zero irq_period counters (diff) | |
| parent | Linux 2.6.30-rc6 (diff) | |
| download | linux-dc3f81b129b5439ba7bac265bbc6a51a39275dae.tar.xz linux-dc3f81b129b5439ba7bac265bbc6a51a39275dae.zip | |
Merge commit 'v2.6.30-rc6' into perfcounters/core
Merge reason: this branch was on an -rc4 base, merge it up to -rc6
to get the latest upstream fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 8a49df4c7363..2c1c2cb0e2e1 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -86,7 +86,7 @@ EXPORT_SYMBOL(vm_get_page_prot); int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */ int sysctl_overcommit_ratio = 50; /* default is 50% */ int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT; -atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0); +struct percpu_counter vm_committed_as; /* * Check that a process has enough memory to allocate a new virtual @@ -180,11 +180,7 @@ 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); @@ -2491,4 +2487,8 @@ void mm_drop_all_locks(struct mm_struct *mm) */ void __init mmap_init(void) { + int ret; + + ret = percpu_counter_init(&vm_committed_as, 0); + VM_BUG_ON(ret); } |