tmpfs: make tmpfs scalable with percpu_counter for used blocks

[pandora-kernel.git] / include / linux / shmem_fs.h

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index e164291..399be5a 100644 (file)
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -3,6 +3,7 @@
 
 #include <linux/swap.h>
 #include <linux/mempolicy.h>
+#include <linux/percpu_counter.h>
 
 /* inode in-kernel data */
 
@@ -23,7 +24,7 @@ struct shmem_inode_info {
 
 struct shmem_sb_info {
        unsigned long max_blocks;   /* How many blocks are allowed */
-       unsigned long free_blocks;  /* How many are left for allocation */
+       struct percpu_counter used_blocks;  /* How many are allocated */
        unsigned long max_inodes;   /* How many inodes are allowed */
        unsigned long free_inodes;  /* How many are left for allocation */
        spinlock_t stat_lock;       /* Serialize shmem_sb_info changes */