1 files changed, 21 insertions, 16 deletions

diff --git a/fs/inode.c b/fs/inode.c
index d0be6159eb7f..32b7c3375021 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -56,8 +56,8 @@
 #define I_HASHBITS      i_hash_shift
 #define I_HASHMASK      i_hash_mask
 
-static unsigned int i_hash_mask;
-static unsigned int i_hash_shift;
+static unsigned int i_hash_mask __read_mostly;
+static unsigned int i_hash_shift __read_mostly;
 
 /*
  * Each inode can be on two separate lists. One is
@@ -73,7 +73,7 @@ static unsigned int i_hash_shift;
 
 LIST_HEAD(inode_in_use);
 LIST_HEAD(inode_unused);
-static struct hlist_head *inode_hashtable;
+static struct hlist_head *inode_hashtable __read_mostly;
 
 /*
  * A simple spinlock to protect the list manipulations.
@@ -84,27 +84,27 @@ static struct hlist_head *inode_hashtable;
 DEFINE_SPINLOCK(inode_lock);
 
 /*
- * iprune_sem provides exclusion between the kswapd or try_to_free_pages
+ * iprune_mutex provides exclusion between the kswapd or try_to_free_pages
  * icache shrinking path, and the umount path.  Without this exclusion,
  * by the time prune_icache calls iput for the inode whose pages it has
  * been invalidating, or by the time it calls clear_inode & destroy_inode
  * from its final dispose_list, the struct super_block they refer to
  * (for inode->i_sb->s_op) may already have been freed and reused.
  */
-DECLARE_MUTEX(iprune_sem);
+static DEFINE_MUTEX(iprune_mutex);
 
 /*
  * Statistics gathering..
  */
 struct inodes_stat_t inodes_stat;
 
-static kmem_cache_t * inode_cachep;
+static kmem_cache_t * inode_cachep __read_mostly;
 
 static struct inode *alloc_inode(struct super_block *sb)
 {
         static struct address_space_operations empty_aops;
         static struct inode_operations empty_iops;
-        static struct file_operations empty_fops;
+        static const struct file_operations empty_fops;
         struct inode *inode;
 
         if (sb->s_op->alloc_inode)
@@ -206,7 +206,7 @@ void inode_init_once(struct inode *inode)
         i_size_ordered_init(inode);
 #ifdef CONFIG_INOTIFY
         INIT_LIST_HEAD(&inode->inotify_watches);
-        sema_init(&inode->inotify_sem, 1);
+        mutex_init(&inode->inotify_mutex);
 #endif
 }
 
@@ -319,7 +319,7 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose)
                 /*
                  * We can reschedule here without worrying about the list's
                  * consistency because the per-sb list of inodes must not
-                 * change during umount anymore, and because iprune_sem keeps
+                 * change during umount anymore, and because iprune_mutex keeps
                  * shrink_icache_memory() away.
                  */
                 cond_resched_lock(&inode_lock);
@@ -355,14 +355,14 @@ int invalidate_inodes(struct super_block * sb)
         int busy;
         LIST_HEAD(throw_away);
 
-        down(&iprune_sem);
+        mutex_lock(&iprune_mutex);
         spin_lock(&inode_lock);
         inotify_unmount_inodes(&sb->s_inodes);
         busy = invalidate_list(&sb->s_inodes, &throw_away);
         spin_unlock(&inode_lock);
 
         dispose_list(&throw_away);
-        up(&iprune_sem);
+        mutex_unlock(&iprune_mutex);
 
         return busy;
 }
@@ -377,7 +377,7 @@ int __invalidate_device(struct block_device *bdev)
         if (sb) {
                 /*
                  * no need to lock the super, get_super holds the
-                 * read semaphore so the filesystem cannot go away
+                 * read mutex so the filesystem cannot go away
                  * under us (->put_super runs with the write lock
                  * hold).
                  */
@@ -423,7 +423,7 @@ static void prune_icache(int nr_to_scan)
         int nr_scanned;
         unsigned long reap = 0;
 
-        down(&iprune_sem);
+        mutex_lock(&iprune_mutex);
         spin_lock(&inode_lock);
         for (nr_scanned = 0; nr_scanned < nr_to_scan; nr_scanned++) {
                 struct inode *inode;
@@ -459,7 +459,7 @@ static void prune_icache(int nr_to_scan)
         spin_unlock(&inode_lock);
 
         dispose_list(&freeable);
-        up(&iprune_sem);
+        mutex_unlock(&iprune_mutex);
 
         if (current_is_kswapd())
                 mod_page_state(kswapd_inodesteal, reap);
@@ -1375,8 +1375,13 @@ void __init inode_init(unsigned long mempages)
         int loop;
 
         /* inode slab cache */
-        inode_cachep = kmem_cache_create("inode_cache", sizeof(struct inode),
-                                0, SLAB_RECLAIM_ACCOUNT|SLAB_PANIC, init_once, NULL);
+        inode_cachep = kmem_cache_create("inode_cache",
+                                         sizeof(struct inode),
+                                         0,
+                                         (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|
+                                         SLAB_MEM_SPREAD),
+                                         init_once,
+                                         NULL);
         set_shrinker(DEFAULT_SEEKS, shrink_icache_memory);
 
         /* Hash may have been set up in inode_init_early */