[PATCH] export generic_drop_inode() to modules

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

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9b8b696d4f150a52b72dfb1addc673168ebd421b..302ec20838caa6bcde0ce7c2303d22f72d1d6e1d 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -213,6 +213,7 @@ extern int dir_notify_enable;
 #include <linux/radix-tree.h>
 #include <linux/prio_tree.h>
 #include <linux/init.h>
+#include <linux/sched.h>
 
 #include <asm/atomic.h>
 #include <asm/semaphore.h>
@@ -220,6 +221,7 @@ extern int dir_notify_enable;
 
 struct iovec;
 struct nameidata;
+struct kiocb;
 struct pipe_inode_info;
 struct poll_table_struct;
 struct kstatfs;
@@ -240,7 +242,7 @@ 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 +304,6 @@ 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 +331,8 @@ 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 +584,6 @@ 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 +676,7 @@ 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;
 };
 
@@ -820,16 +823,34 @@ enum {
 #define vfs_check_frozen(sb, level) \
        wait_event((sb)->s_wait_unfrozen, ((sb)->s_frozen < (level)))
 
+static inline void get_fs_excl(void)
+{
+       atomic_inc(&current->fs_excl);
+}
+
+static inline void put_fs_excl(void)
+{
+       atomic_dec(&current->fs_excl);
+}
+
+static inline int has_fs_excl(void)
+{
+       return atomic_read(&current->fs_excl);
+}
+
+
 /*
  * Superblock locking.
  */
 static inline void lock_super(struct super_block * sb)
 {
+       get_fs_excl();
        down(&sb->s_lock);
 }
 
 static inline void unlock_super(struct super_block * sb)
 {
+       put_fs_excl();
        up(&sb->s_lock);
 }
 
@@ -883,7 +904,9 @@ 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 +1047,7 @@ 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)
 
@@ -1411,6 +1435,7 @@ extern struct inode * igrab(struct inode *);
 extern ino_t iunique(struct super_block *, ino_t);
 extern int inode_needs_sync(struct inode *inode);
 extern void generic_delete_inode(struct inode *inode);
+extern void generic_drop_inode(struct inode *inode);
 
 extern struct inode *ilookup5(struct super_block *sb, unsigned long hashval,
                int (*test)(struct inode *, void *), void *data);
@@ -1494,6 +1519,23 @@ 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_read(struct file *filp, char __user *buf, size_t len,
+                            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_write(struct file *filp, const char __user *buf,
+                             size_t len, 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)