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-rw-r--r--mm/mmap.c9
1 files changed, 1 insertions, 8 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 404319477e7..12334aecf8a 100644
--- 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;