tmpfs: take control of its truncate_range

[sfrench/cifs-2.6.git] / include / linux / shmem_fs.h

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 2b7fec840517ff00ae46d14b0662bbf85bb4dc62..22a20af4d785c2f5b251e6828ed73f429267ecfc 100644 (file)
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -5,6 +5,13 @@
 #include <linux/mempolicy.h>
 #include <linux/percpu_counter.h>
 
+struct page;
+struct file;
+struct inode;
+struct super_block;
+struct user_struct;
+struct vm_area_struct;
+
 /* inode in-kernel data */
 
 #define SHMEM_NR_DIRECT 16
@@ -45,7 +52,18 @@ static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
        return container_of(inode, struct shmem_inode_info, vfs_inode);
 }
 
+/*
+ * Functions in mm/shmem.c called directly from elsewhere:
+ */
 extern int init_tmpfs(void);
 extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
+extern struct file *shmem_file_setup(const char *name,
+                                       loff_t size, unsigned long flags);
+extern int shmem_zero_setup(struct vm_area_struct *);
+extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
+extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
+extern int shmem_unuse(swp_entry_t entry, struct page *page);
+extern void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff,
+                                       struct page **pagep, swp_entry_t *ent);
 
 #endif