Pull sn-features into release branch

[linux-2.6] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 404319477e71d61679166bc954ed246719affe89..12334aecf8ad3d74b62f93da8db6f529e981d51d 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -61,7 +61,7 @@ pgprot_t protection_map[16] = {
 
 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;
+int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
 atomic_t vm_committed_space = ATOMIC_INIT(0);
 
 /*
@@ -203,13 +203,6 @@ static void remove_vm_struct(struct vm_area_struct *vma)
        kmem_cache_free(vm_area_cachep, vma);
 }
 
-/*
- *  sys_brk() for the most part doesn't need the global kernel
- *  lock, except when an application is doing something nasty
- *  like trying to un-brk an area that has already been mapped
- *  to a regular file.  in this case, the unmapping will need
- *  to invoke file system routines that need the global lock.
- */
 asmlinkage unsigned long sys_brk(unsigned long brk)
 {
        unsigned long rlim, retval;