regulator: tps65090: convert regualtor_init_data as pointer
[linux-2.6.git] / include / linux / shmem_fs.h
index cae65dc..9291ac3 100644 (file)
@@ -3,33 +3,20 @@
 
 #include <linux/swap.h>
 #include <linux/mempolicy.h>
+#include <linux/pagemap.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
-
-#define SHMEM_SYMLINK_INLINE_LEN (SHMEM_NR_DIRECT * sizeof(swp_entry_t))
-
 struct shmem_inode_info {
        spinlock_t              lock;
        unsigned long           flags;
        unsigned long           alloced;        /* data pages alloced to file */
-       unsigned long           swapped;        /* subtotal assigned to swap */
-       unsigned long           next_index;     /* highest alloced index + 1 */
-       struct shared_policy    policy;         /* NUMA memory alloc policy */
-       struct page             *i_indirect;    /* top indirect blocks page */
        union {
-               swp_entry_t     i_direct[SHMEM_NR_DIRECT]; /* first blocks */
-               char            inline_symlink[SHMEM_SYMLINK_INLINE_LEN];
+               unsigned long   swapped;        /* subtotal assigned to swap */
+               char            *symlink;       /* unswappable short symlink */
        };
+       struct shared_policy    policy;         /* NUMA memory alloc policy */
        struct list_head        swaplist;       /* chain of maybes on swap */
        struct list_head        xattr_list;     /* list of shmem_xattr */
        struct inode            vfs_inode;
@@ -55,14 +42,22 @@ static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
 /*
  * Functions in mm/shmem.c called directly from elsewhere:
  */
-extern int init_tmpfs(void);
+extern int shmem_init(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 struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
+                                       pgoff_t index, gfp_t gfp_mask);
+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);
+
+static inline struct page *shmem_read_mapping_page(
+                               struct address_space *mapping, pgoff_t index)
+{
+       return shmem_read_mapping_page_gfp(mapping, index,
+                                       mapping_gfp_mask(mapping));
+}
 
 #endif