mnt_init() cleanup
PATCH 1/1 mnt_init() cleanup
Hello akpm,
At the very beginning in 2.4 days, in mnt_init(), mount_hashtable allocation page order was determined at runtime. Later the page order got fixed to 0. This patch cleanups it.
Signed-off-by Coywolf Qi Hunt <[email protected]>
fs/namespace.c +3 -5
@@ -1392,16 +1392,14 @@ static void __init init_mount_tree(void)void __init mnt_init (unsigned long mempages) {struct list_head *d; -unsigned long order;unsigned int nr_hash;int i; mnt_cache =kmem_cache_create ("mnt_cache" ,sizeof (struct vfsmount ),0 ,SLAB_HWCACHE_ALIGN |SLAB_PANIC ,NULL ,NULL ); - order =0 ; mount_hashtable = (struct list_head *) -__get_free_pages (GFP_ATOMIC , order); +__get_free_page (GFP_ATOMIC );if (!mount_hashtable)panic ("Failed to allocate mount hash table\n" );
@@ -1411,7 +1409,7 @@ void __init mnt_init(unsigned long mempa* We don't guarantee that "sizeof(struct list_head)" is necessarily * a power-of-two. */ - nr_hash = (1UL << order) *PAGE_SIZE /sizeof (struct list_head ); + nr_hash =PAGE_SIZE /sizeof (struct list_head ); hash_bits =0 ; do { hash_bits++;
@@ -1426,7 +1424,7 @@ void __init mnt_init(unsigned long mempa hash_mask = nr_hash-1 ;printk ("Mount-cache hash table entries: %d (order: %ld, %ld bytes)\n" , - nr_hash, order, (PAGE_SIZE << order)); + nr_hash,0 ,PAGE_SIZE );/* And initialize the newly allocated array */ d = mount_hashtable;
Signature · 2 lines
Coywolf Qi Hunt Homepage http://sosdg.org/~coywolf/