[PATCH] xip: ext2: execute in place

[net-next-2.6.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9b8b696d4f150a52b72dfb1addc673168ebd421b..7e0501895f356e662748aa82f687cb7572f6cc94 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -220,6 +220,7 @@ extern int dir_notify_enable;
 
 struct iovec;
 struct nameidata;
+struct kiocb;
 struct pipe_inode_info;
 struct poll_table_struct;
 struct kstatfs;
@@ -240,7 +241,7 @@ typedef int (get_block_t)(struct inode *inode, sector_t iblock,
 typedef int (get_blocks_t)(struct inode *inode, sector_t iblock,
                        unsigned long max_blocks,
                        struct buffer_head *bh_result, int create);
-typedef void (dio_iodone_t)(struct inode *inode, loff_t offset,
+typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
                        ssize_t bytes, void *private);
 
 /*
@@ -302,7 +303,6 @@ struct iattr {
 struct page;
 struct address_space;
 struct writeback_control;
-struct kiocb;
 
 struct address_space_operations {
        int (*writepage)(struct page *page, struct writeback_control *wbc);
@@ -330,6 +330,8 @@ struct address_space_operations {
        int (*releasepage) (struct page *, int);
        ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
                        loff_t offset, unsigned long nr_segs);
+       struct page* (*get_xip_page)(struct address_space *, sector_t,
+                       int);
 };
 
 struct backing_dev_info;
@@ -581,7 +583,6 @@ struct file {
        atomic_t                f_count;
        unsigned int            f_flags;
        mode_t                  f_mode;
-       int                     f_error;
        loff_t                  f_pos;
        struct fown_struct      f_owner;
        unsigned int            f_uid, f_gid;
@@ -674,6 +675,7 @@ struct file_lock {
        struct lock_manager_operations *fl_lmops;       /* Callbacks for lockmanagers */
        union {
                struct nfs_lock_info    nfs_fl;
+               struct nfs4_lock_info   nfs4_fl;
        } fl_u;
 };
 
@@ -883,7 +885,9 @@ struct block_device_operations {
        int (*open) (struct inode *, struct file *);
        int (*release) (struct inode *, struct file *);
        int (*ioctl) (struct inode *, struct file *, unsigned, unsigned long);
+       long (*unlocked_ioctl) (struct file *, unsigned, unsigned long);
        long (*compat_ioctl) (struct file *, unsigned, unsigned long);
+       int (*direct_access) (struct block_device *, sector_t, unsigned long *);
        int (*media_changed) (struct gendisk *);
        int (*revalidate_disk) (struct gendisk *);
        struct module *owner;
@@ -1024,6 +1028,7 @@ struct super_operations {
 #define I_FREEING              16
 #define I_CLEAR                        32
 #define I_NEW                  64
+#define I_WILL_FREE            128
 
 #define I_DIRTY (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_PAGES)
 
@@ -1494,6 +1499,27 @@ extern loff_t remote_llseek(struct file *file, loff_t offset, int origin);
 extern int generic_file_open(struct inode * inode, struct file * filp);
 extern int nonseekable_open(struct inode * inode, struct file * filp);
 
+#ifdef CONFIG_FS_XIP
+extern ssize_t xip_file_aio_read(struct kiocb *iocb, char __user *buf,
+                                size_t count, loff_t pos);
+extern ssize_t xip_file_readv(struct file *filp, const struct iovec *iov,
+                             unsigned long nr_segs, loff_t *ppos);
+extern ssize_t xip_file_sendfile(struct file *in_file, loff_t *ppos,
+                                size_t count, read_actor_t actor,
+                                void *target);
+extern int xip_file_mmap(struct file * file, struct vm_area_struct * vma);
+extern ssize_t xip_file_aio_write(struct kiocb *iocb, const char __user *buf,
+                                 size_t count, loff_t pos);
+extern ssize_t xip_file_writev(struct file *file, const struct iovec *iov,
+                              unsigned long nr_segs, loff_t *ppos);
+extern int xip_truncate_page(struct address_space *mapping, loff_t from);
+#else
+static inline int xip_truncate_page(struct address_space *mapping, loff_t from)
+{
+       return 0;
+}
+#endif
+
 static inline void do_generic_file_read(struct file * filp, loff_t *ppos,
                                        read_descriptor_t * desc,
                                        read_actor_t actor)