Merge tag 'xfs-for-linus-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-block.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index d7f37bfcbdcec77e68d419330f734beed0f6ee6f..35d99266ca9a392b695f39dc5fc1f7c03cc7bf80 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -53,6 +53,8 @@ struct swap_info_struct;
 struct seq_file;
 struct workqueue_struct;
 struct iov_iter;
+struct fscrypt_info;
+struct fscrypt_operations;
 
 extern void __init inode_init(void);
 extern void __init inode_init_early(void);
@@ -320,6 +322,7 @@ struct writeback_control;
 #define IOCB_EVENTFD           (1 << 0)
 #define IOCB_APPEND            (1 << 1)
 #define IOCB_DIRECT            (1 << 2)
+#define IOCB_HIPRI             (1 << 3)
 
 struct kiocb {
        struct file             *ki_filp;
@@ -484,9 +487,6 @@ struct block_device {
        int                     bd_fsfreeze_count;
        /* Mutex for freeze */
        struct mutex            bd_fsfreeze_mutex;
-#ifdef CONFIG_FS_DAX
-       int                     bd_map_count;
-#endif
 };
 
 /*
@@ -681,6 +681,10 @@ struct inode {
        struct hlist_head       i_fsnotify_marks;
 #endif
 
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+       struct fscrypt_info     *i_crypt_info;
+#endif
+
        void                    *i_private; /* fs or device private pointer */
 };
 
@@ -1326,6 +1330,8 @@ struct super_block {
 #endif
        const struct xattr_handler **s_xattr;
 
+       const struct fscrypt_operations *s_cop;
+
        struct hlist_bl_head    s_anon;         /* anonymous dentries for (nfs) exporting */
        struct list_head        s_mounts;       /* list of mounts; _not_ for fs use */
        struct block_device     *s_bdev;
@@ -1542,11 +1548,6 @@ extern int vfs_unlink(struct inode *, struct dentry *, struct inode **);
 extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *, struct inode **, unsigned int);
 extern int vfs_whiteout(struct inode *, struct dentry *);
 
-/*
- * VFS dentry helper functions.
- */
-extern void dentry_unhash(struct dentry *dentry);
-
 /*
  * VFS file helper functions.
  */
@@ -1712,9 +1713,9 @@ extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *)
 extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
 extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
 extern ssize_t vfs_readv(struct file *, const struct iovec __user *,
-               unsigned long, loff_t *);
+               unsigned long, loff_t *, int);
 extern ssize_t vfs_writev(struct file *, const struct iovec __user *,
-               unsigned long, loff_t *);
+               unsigned long, loff_t *, int);
 extern ssize_t vfs_copy_file_range(struct file *, loff_t , struct file *,
                                   loff_t, size_t, unsigned int);
 extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
@@ -2579,7 +2580,22 @@ static inline void i_readcount_inc(struct inode *inode)
 #endif
 extern int do_pipe_flags(int *, int);
 
+enum kernel_read_file_id {
+       READING_FIRMWARE = 1,
+       READING_MODULE,
+       READING_KEXEC_IMAGE,
+       READING_KEXEC_INITRAMFS,
+       READING_POLICY,
+       READING_MAX_ID
+};
+
 extern int kernel_read(struct file *, loff_t, char *, unsigned long);
+extern int kernel_read_file(struct file *, void **, loff_t *, loff_t,
+                           enum kernel_read_file_id);
+extern int kernel_read_file_from_path(char *, void **, loff_t *, loff_t,
+                                     enum kernel_read_file_id);
+extern int kernel_read_file_from_fd(int, void **, loff_t *, loff_t,
+                                   enum kernel_read_file_id);
 extern ssize_t kernel_write(struct file *, const char *, size_t, loff_t);
 extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
 extern struct file * open_exec(const char *);
@@ -2907,7 +2923,7 @@ extern void replace_mount_options(struct super_block *sb, char *options);
 
 static inline bool io_is_direct(struct file *filp)
 {
-       return (filp->f_flags & O_DIRECT) || IS_DAX(file_inode(filp));
+       return (filp->f_flags & O_DIRECT) || IS_DAX(filp->f_mapping->host);
 }
 
 static inline int iocb_flags(struct file *file)