[PATCH] page migration cleanup: pass "mapping" to migration functions

[deliverable/linux.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 162c6e57307a0e528040d7f3e9b287b61c711760..e917403f4d58fdaa64282db6204e49db0e2808db 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -6,7 +6,6 @@
  * structures etc.
  */
 
-#include <linux/config.h>
 #include <linux/limits.h>
 #include <linux/ioctl.h>
 
@@ -213,6 +212,10 @@ extern int dir_notify_enable;
 #define FIBMAP    _IO(0x00,1)  /* bmap access */
 #define FIGETBSZ   _IO(0x00,2) /* get the block size used for bmap */
 
+#define SYNC_FILE_RANGE_WAIT_BEFORE    1
+#define SYNC_FILE_RANGE_WRITE          2
+#define SYNC_FILE_RANGE_WAIT_AFTER     4
+
 #ifdef __KERNEL__
 
 #include <linux/linkage.h>
@@ -373,7 +376,8 @@ struct address_space_operations {
        struct page* (*get_xip_page)(struct address_space *, sector_t,
                        int);
        /* migrate the contents of a page to the specified target */
-       int (*migratepage) (struct page *, struct page *);
+       int (*migratepage) (struct address_space *,
+                       struct page *, struct page *);
 };
 
 struct backing_dev_info;
@@ -758,9 +762,6 @@ extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
 extern int fcntl_getlease(struct file *filp);
 
 /* fs/sync.c */
-#define SYNC_FILE_RANGE_WAIT_BEFORE    1
-#define SYNC_FILE_RANGE_WRITE          2
-#define SYNC_FILE_RANGE_WAIT_AFTER     4
 extern int do_sync_file_range(struct file *file, loff_t offset, loff_t endbyte,
                        unsigned int flags);
 
@@ -782,7 +783,6 @@ extern int setlease(struct file *, long, struct file_lock **);
 extern int lease_modify(struct file_lock **, int);
 extern int lock_may_read(struct inode *, loff_t start, unsigned long count);
 extern int lock_may_write(struct inode *, loff_t start, unsigned long count);
-extern void steal_locks(fl_owner_t from);
 
 struct fasync_struct {
        int     magic;
@@ -1039,8 +1039,8 @@ struct file_operations {
        int (*check_flags)(int);
        int (*dir_notify)(struct file *filp, unsigned long arg);
        int (*flock) (struct file *, int, struct file_lock *);
-       ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int);
-       ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
+       ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
+       ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
 };
 
 struct inode_operations {
@@ -1097,7 +1097,7 @@ struct super_operations {
        int (*sync_fs)(struct super_block *sb, int wait);
        void (*write_super_lockfs) (struct super_block *);
        void (*unlockfs) (struct super_block *);
-       int (*statfs) (struct super_block *, struct kstatfs *);
+       int (*statfs) (struct dentry *, struct kstatfs *);
        int (*remount_fs) (struct super_block *, int *, char *);
        void (*clear_inode) (struct inode *);
        void (*umount_begin) (struct super_block *);
@@ -1270,23 +1270,26 @@ find_exported_dentry(struct super_block *sb, void *obj, void *parent,
 struct file_system_type {
        const char *name;
        int fs_flags;
-       struct super_block *(*get_sb) (struct file_system_type *, int,
-                                      const char *, void *);
+       int (*get_sb) (struct file_system_type *, int,
+                      const char *, void *, struct vfsmount *);
        void (*kill_sb) (struct super_block *);
        struct module *owner;
        struct file_system_type * next;
        struct list_head fs_supers;
 };
 
-struct super_block *get_sb_bdev(struct file_system_type *fs_type,
+extern int get_sb_bdev(struct file_system_type *fs_type,
        int flags, const char *dev_name, void *data,
-       int (*fill_super)(struct super_block *, void *, int));
-struct super_block *get_sb_single(struct file_system_type *fs_type,
+       int (*fill_super)(struct super_block *, void *, int),
+       struct vfsmount *mnt);
+extern int get_sb_single(struct file_system_type *fs_type,
        int flags, void *data,
-       int (*fill_super)(struct super_block *, void *, int));
-struct super_block *get_sb_nodev(struct file_system_type *fs_type,
+       int (*fill_super)(struct super_block *, void *, int),
+       struct vfsmount *mnt);
+extern int get_sb_nodev(struct file_system_type *fs_type,
        int flags, void *data,
-       int (*fill_super)(struct super_block *, void *, int));
+       int (*fill_super)(struct super_block *, void *, int),
+       struct vfsmount *mnt);
 void generic_shutdown_super(struct super_block *sb);
 void kill_block_super(struct super_block *sb);
 void kill_anon_super(struct super_block *sb);
@@ -1297,8 +1300,10 @@ struct super_block *sget(struct file_system_type *type,
                        int (*test)(struct super_block *,void *),
                        int (*set)(struct super_block *,void *),
                        void *data);
-struct super_block *get_sb_pseudo(struct file_system_type *, char *,
-                       struct super_operations *ops, unsigned long);
+extern int get_sb_pseudo(struct file_system_type *, char *,
+       struct super_operations *ops, unsigned long,
+       struct vfsmount *mnt);
+extern int simple_set_mnt(struct vfsmount *mnt, struct super_block *sb);
 int __put_super(struct super_block *sb);
 int __put_super_and_need_restart(struct super_block *sb);
 void unnamed_dev_init(void);
@@ -1321,7 +1326,7 @@ extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
                                  struct vfsmount *);
 
-extern int vfs_statfs(struct super_block *, struct kstatfs *);
+extern int vfs_statfs(struct dentry *, struct kstatfs *);
 
 /* /sys/fs */
 extern struct subsystem fs_subsys;
@@ -1613,13 +1618,13 @@ extern void do_generic_mapping_read(struct address_space *mapping,
                                    loff_t *, read_descriptor_t *, read_actor_t);
 
 /* fs/splice.c */
-extern ssize_t generic_file_splice_read(struct file *,
+extern ssize_t generic_file_splice_read(struct file *, loff_t *,
                struct pipe_inode_info *, size_t, unsigned int);
 extern ssize_t generic_file_splice_write(struct pipe_inode_info *,
-               struct file *, size_t, unsigned int);
+               struct file *, loff_t *, size_t, unsigned int);
 extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
-               struct file *out, size_t len, unsigned int flags);
-extern long do_splice_direct(struct file *in, struct file *out,
+               struct file *out, loff_t *, size_t len, unsigned int flags);
+extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
                size_t len, unsigned int flags);
 
 extern void
@@ -1742,7 +1747,7 @@ extern int dcache_dir_close(struct inode *, struct file *);
 extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
 extern int dcache_readdir(struct file *, void *, filldir_t);
 extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
-extern int simple_statfs(struct super_block *, struct kstatfs *);
+extern int simple_statfs(struct dentry *, struct kstatfs *);
 extern int simple_link(struct dentry *, struct inode *, struct dentry *);
 extern int simple_unlink(struct inode *, struct dentry *);
 extern int simple_rmdir(struct inode *, struct dentry *);
@@ -1768,7 +1773,8 @@ extern void simple_release_fs(struct vfsmount **mount, int *count);
 extern ssize_t simple_read_from_buffer(void __user *, size_t, loff_t *, const void *, size_t);
 
 #ifdef CONFIG_MIGRATION
-extern int buffer_migrate_page(struct page *, struct page *);
+extern int buffer_migrate_page(struct address_space *,
+                               struct page *, struct page *);
 #else
 #define buffer_migrate_page NULL
 #endif