1 files changed, 138 insertions, 123 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index b1bcb275b596..63d069bd80b7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -8,6 +8,7 @@
 
 #include <linux/limits.h>
 #include <linux/ioctl.h>
+#include <linux/blk_types.h>
 
 /*
  * It's silly to have NR_OPEN bigger than NR_FILE, but you can change
@@ -53,6 +54,7 @@ struct inodes_stat_t {
 #define MAY_APPEND 8
 #define MAY_ACCESS 16
 #define MAY_OPEN 32
+#define MAY_CHDIR 64
 
 /*
  * flags in file.f_mode.  Note that FMODE_READ and FMODE_WRITE must correspond
@@ -60,24 +62,24 @@ struct inodes_stat_t {
  */
 
 /* file is open for reading */
-#define FMODE_READ              ((__force fmode_t)1)
+#define FMODE_READ              ((__force fmode_t)0x1)
 /* file is open for writing */
-#define FMODE_WRITE             ((__force fmode_t)2)
+#define FMODE_WRITE             ((__force fmode_t)0x2)
 /* file is seekable */
-#define FMODE_LSEEK             ((__force fmode_t)4)
+#define FMODE_LSEEK             ((__force fmode_t)0x4)
 /* file can be accessed using pread */
-#define FMODE_PREAD             ((__force fmode_t)8)
+#define FMODE_PREAD             ((__force fmode_t)0x8)
 /* file can be accessed using pwrite */
-#define FMODE_PWRITE            ((__force fmode_t)16)
+#define FMODE_PWRITE            ((__force fmode_t)0x10)
 /* File is opened for execution with sys_execve / sys_uselib */
-#define FMODE_EXEC              ((__force fmode_t)32)
+#define FMODE_EXEC              ((__force fmode_t)0x20)
 /* File is opened with O_NDELAY (only set for block devices) */
-#define FMODE_NDELAY            ((__force fmode_t)64)
+#define FMODE_NDELAY            ((__force fmode_t)0x40)
 /* File is opened with O_EXCL (only set for block devices) */
-#define FMODE_EXCL              ((__force fmode_t)128)
+#define FMODE_EXCL              ((__force fmode_t)0x80)
 /* File is opened using open(.., 3, ..) and is writeable only for ioctls
    (specialy hack for floppy.c) */
-#define FMODE_WRITE_IOCTL       ((__force fmode_t)256)
+#define FMODE_WRITE_IOCTL       ((__force fmode_t)0x100)
 
 /*
  * Don't update ctime and mtime.
@@ -85,7 +87,13 @@ struct inodes_stat_t {
  * Currently a special hack for the XFS open_by_handle ioctl, but we'll
  * hopefully graduate it to a proper O_CMTIME flag supported by open(2) soon.
  */
-#define FMODE_NOCMTIME          ((__force fmode_t)2048)
+#define FMODE_NOCMTIME          ((__force fmode_t)0x800)
+
+/* Expect random access pattern */
+#define FMODE_RANDOM            ((__force fmode_t)0x1000)
+
+/* File was opened by fanotify and shouldn't generate fanotify events */
+#define FMODE_NONOTIFY          ((__force fmode_t)0x1000000)
 
 /*
  * The below are the various read and write types that we support. Some of
@@ -114,12 +122,9 @@ struct inodes_stat_t {
  *                      immediately wait on this read without caring about
  *                      unplugging.
  * READA                Used for read-ahead operations. Lower priority, and the
- *                       block layer could (in theory) choose to ignore this
+ *                      block layer could (in theory) choose to ignore this
  *                      request if it runs into resource problems.
  * WRITE                A normal async write. Device will be plugged.
- * SWRITE               Like WRITE, but a special case for ll_rw_block() that
- *                      tells it to lock the buffer first. Normally a buffer
- *                      must be locked before doing IO.
  * WRITE_SYNC_PLUG      Synchronous write. Identical to WRITE, but passes down
  *                      the hint that someone will be waiting on this IO
  *                      shortly. The device must still be unplugged explicitly,
@@ -130,10 +135,7 @@ struct inodes_stat_t {
  *                      immediately after submission. The write equivalent
  *                      of READ_SYNC.
  * WRITE_ODIRECT_PLUG   Special case write for O_DIRECT only.
- * SWRITE_SYNC
- * SWRITE_SYNC_PLUG     Like WRITE_SYNC/WRITE_SYNC_PLUG, but locks the buffer.
- *                      See SWRITE.
- * WRITE_BARRIER        Like WRITE, but tells the block layer that all
+ * WRITE_BARRIER        Like WRITE_SYNC, but tells the block layer that all
  *                      previously submitted writes must be safely on storage
  *                      before this one is started. Also guarantees that when
  *                      this write is complete, it itself is also safely on
@@ -141,29 +143,29 @@ struct inodes_stat_t {
  *                      of this IO.
  *
  */
-#define RW_MASK         1
-#define RWA_MASK        2
-#define READ 0
-#define WRITE 1
-#define READA 2         /* read-ahead  - don't block if no resources */
-#define SWRITE 3        /* for ll_rw_block() - wait for buffer lock */
-#define READ_SYNC       (READ | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG))
-#define READ_META       (READ | (1 << BIO_RW_META))
-#define WRITE_SYNC_PLUG (WRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE))
-#define WRITE_SYNC      (WRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG))
-#define WRITE_ODIRECT_PLUG      (WRITE | (1 << BIO_RW_SYNCIO))
-#define WRITE_META      (WRITE | (1 << BIO_RW_META))
-#define SWRITE_SYNC_PLUG        \
-                        (SWRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE))
-#define SWRITE_SYNC     (SWRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG))
-#define WRITE_BARRIER   (WRITE | (1 << BIO_RW_BARRIER))
+#define RW_MASK                 REQ_WRITE
+#define RWA_MASK                REQ_RAHEAD
+
+#define READ                    0
+#define WRITE                   RW_MASK
+#define READA                   RWA_MASK
+
+#define READ_SYNC               (READ | REQ_SYNC | REQ_UNPLUG)
+#define READ_META               (READ | REQ_META)
+#define WRITE_SYNC_PLUG         (WRITE | REQ_SYNC | REQ_NOIDLE)
+#define WRITE_SYNC              (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
+#define WRITE_ODIRECT_PLUG      (WRITE | REQ_SYNC)
+#define WRITE_META              (WRITE | REQ_META)
+#define WRITE_BARRIER           (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
+                                 REQ_HARDBARRIER)
 
 /*
  * These aren't really reads or writes, they pass down information about
  * parts of device that are now unused by the file system.
  */
-#define DISCARD_NOBARRIER (WRITE | (1 << BIO_RW_DISCARD))
-#define DISCARD_BARRIER (DISCARD_NOBARRIER | (1 << BIO_RW_BARRIER))
+#define DISCARD_NOBARRIER       (WRITE | REQ_DISCARD)
+#define DISCARD_BARRIER         (WRITE | REQ_DISCARD | REQ_HARDBARRIER)
+#define DISCARD_SECURE          (DISCARD_NOBARRIER | REQ_SECURE)
 
 #define SEL_IN          1
 #define SEL_OUT         2
@@ -206,6 +208,7 @@ struct inodes_stat_t {
 #define MS_KERNMOUNT    (1<<22) /* this is a kern_mount call */
 #define MS_I_VERSION    (1<<23) /* Update inode I_version field */
 #define MS_STRICTATIME  (1<<24) /* Always perform atime updates */
+#define MS_BORN         (1<<29)
 #define MS_ACTIVE       (1<<30)
 #define MS_NOUSER       (1<<31)
 
@@ -306,6 +309,7 @@ struct inodes_stat_t {
 #define BLKALIGNOFF _IO(0x12,122)
 #define BLKPBSZGET _IO(0x12,123)
 #define BLKDISCARDZEROES _IO(0x12,124)
+#define BLKSECDISCARD _IO(0x12,125)
 
 #define BMAP_IOCTL 1            /* obsolete - kept for compatibility */
 #define FIBMAP     _IO(0x00,1)  /* bmap access */
@@ -404,15 +408,13 @@ extern int get_max_files(void);
 extern int sysctl_nr_open;
 extern struct inodes_stat_t inodes_stat;
 extern int leases_enable, lease_break_time;
-#ifdef CONFIG_DNOTIFY
-extern int dir_notify_enable;
-#endif
 
 struct buffer_head;
 typedef int (get_block_t)(struct inode *inode, sector_t iblock,
                         struct buffer_head *bh_result, int create);
 typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
-                        ssize_t bytes, void *private);
+                        ssize_t bytes, void *private, int ret,
+                        bool is_async);
 
 /*
  * Attribute flags.  These should be or-ed together to figure out what
@@ -648,6 +650,7 @@ struct block_device {
         int                     bd_openers;
         struct mutex            bd_mutex;       /* open/close mutex */
         struct list_head        bd_inodes;
+        void *                  bd_claiming;
         void *                  bd_holder;
         int                     bd_holders;
 #ifdef CONFIG_SYSFS
@@ -681,6 +684,7 @@ struct block_device {
  */
 #define PAGECACHE_TAG_DIRTY     0
 #define PAGECACHE_TAG_WRITEBACK 1
+#define PAGECACHE_TAG_TOWRITE   2
 
 int mapping_tagged(struct address_space *mapping, int tag);
 
@@ -729,6 +733,7 @@ struct inode {
         uid_t                   i_uid;
         gid_t                   i_gid;
         dev_t                   i_rdev;
+        unsigned int            i_blkbits;
         u64                     i_version;
         loff_t                  i_size;
 #ifdef __NEED_I_SIZE_ORDERED
@@ -738,7 +743,6 @@ struct inode {
         struct timespec         i_mtime;
         struct timespec         i_ctime;
         blkcnt_t                i_blocks;
-        unsigned int            i_blkbits;
         unsigned short          i_bytes;
         umode_t                 i_mode;
         spinlock_t              i_lock; /* i_blocks, i_bytes, maybe i_size */
@@ -764,12 +768,7 @@ struct inode {
 
 #ifdef CONFIG_FSNOTIFY
         __u32                   i_fsnotify_mask; /* all events this inode cares about */
-        struct hlist_head       i_fsnotify_mark_entries; /* fsnotify mark entries */
-#endif
-
-#ifdef CONFIG_INOTIFY
-        struct list_head        inotify_watches; /* watches on this inode */
-        struct mutex            inotify_mutex;  /* protects the watches list */
+        struct hlist_head       i_fsnotify_marks;
 #endif
 
         unsigned long           i_state;
@@ -921,6 +920,9 @@ struct file {
 #define f_vfsmnt        f_path.mnt
         const struct file_operations    *f_op;
         spinlock_t              f_lock;  /* f_ep_links, f_flags, no IRQ */
+#ifdef CONFIG_SMP
+        int                     f_sb_list_cpu;
+#endif
         atomic_long_t           f_count;
         unsigned int            f_flags;
         fmode_t                 f_mode;
@@ -945,11 +947,9 @@ struct file {
         unsigned long f_mnt_write_state;
 #endif
 };
-extern spinlock_t files_lock;
-#define file_list_lock() spin_lock(&files_lock);
-#define file_list_unlock() spin_unlock(&files_lock);
 
 #define get_file(x)     atomic_long_inc(&(x)->f_count)
+#define fput_atomic(x)  atomic_long_add_unless(&(x)->f_count, -1, 1)
 #define file_count(x)   atomic_long_read(&(x)->f_count)
 
 #ifdef CONFIG_DEBUG_WRITECOUNT
@@ -1093,6 +1093,10 @@ struct file_lock {
 
 #include <linux/fcntl.h>
 
+/* temporary stubs for BKL removal */
+#define lock_flocks() lock_kernel()
+#define unlock_flocks() unlock_kernel()
+
 extern void send_sigio(struct fown_struct *fown, int fd, int band);
 
 #ifdef CONFIG_FILE_LOCKING
@@ -1277,10 +1281,12 @@ static inline int lock_may_write(struct inode *inode, loff_t start,
 
 
 struct fasync_struct {
-        int     magic;
-        int     fa_fd;
-        struct  fasync_struct   *fa_next; /* singly linked list */
-        struct  file            *fa_file;
+        spinlock_t              fa_lock;
+        int                     magic;
+        int                     fa_fd;
+        struct fasync_struct    *fa_next; /* singly linked list */
+        struct file             *fa_file;
+        struct rcu_head         fa_rcu;
 };
 
 #define FASYNC_MAGIC 0x4601
@@ -1289,8 +1295,6 @@ struct fasync_struct {
 extern int fasync_helper(int, struct file *, int, struct fasync_struct **);
 /* can be called from interrupts */
 extern void kill_fasync(struct fasync_struct **, int, int);
-/* only for net: no internal synchronization */
-extern void __kill_fasync(struct fasync_struct *, int, int);
 
 extern int __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
 extern int f_setown(struct file *filp, unsigned long arg, int force);
@@ -1305,18 +1309,18 @@ extern int send_sigurg(struct fown_struct *fown);
 #define MNT_FORCE       0x00000001      /* Attempt to forcibily umount */
 #define MNT_DETACH      0x00000002      /* Just detach from the tree */
 #define MNT_EXPIRE      0x00000004      /* Mark for expiry */
+#define UMOUNT_NOFOLLOW 0x00000008      /* Don't follow symlink on umount */
+#define UMOUNT_UNUSED   0x80000000      /* Flag guaranteed to be unused */
 
 extern struct list_head super_blocks;
 extern spinlock_t sb_lock;
 
-#define sb_entry(list)  list_entry((list), struct super_block, s_list)
-#define S_BIAS (1<<30)
 struct super_block {
         struct list_head        s_list;         /* Keep this first */
         dev_t                   s_dev;          /* search index; _not_ kdev_t */
-        unsigned long           s_blocksize;
-        unsigned char           s_blocksize_bits;
         unsigned char           s_dirt;
+        unsigned char           s_blocksize_bits;
+        unsigned long           s_blocksize;
         loff_t                  s_maxbytes;     /* Max file size */
         struct file_system_type *s_type;
         const struct super_operations   *s_op;
@@ -1329,16 +1333,19 @@ struct super_block {
         struct rw_semaphore     s_umount;
         struct mutex            s_lock;
         int                     s_count;
-        int                     s_need_sync;
         atomic_t                s_active;
 #ifdef CONFIG_SECURITY
         void                    *s_security;
 #endif
-        struct xattr_handler    **s_xattr;
+        const struct xattr_handler **s_xattr;
 
         struct list_head        s_inodes;       /* all inodes */
         struct hlist_head       s_anon;         /* anonymous dentries for (nfs) exporting */
+#ifdef CONFIG_SMP
+        struct list_head __percpu *s_files;
+#else
         struct list_head        s_files;
+#endif
         /* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */
         struct list_head        s_dentry_lru;   /* unused dentry lru */
         int                     s_nr_dentry_unused;     /* # of dentry on lru */
@@ -1357,16 +1364,16 @@ struct super_block {
         void                    *s_fs_info;     /* Filesystem private info */
         fmode_t                 s_mode;
 
+        /* Granularity of c/m/atime in ns.
+           Cannot be worse than a second */
+        u32                s_time_gran;
+
         /*
          * The next field is for VFS *only*. No filesystems have any business
          * even looking at it. You had been warned.
          */
         struct mutex s_vfs_rename_mutex;        /* Kludge */
 
-        /* Granularity of c/m/atime in ns.
-           Cannot be worse than a second */
-        u32                s_time_gran;
-
         /*
          * Filesystem subtype.  If non-empty the filesystem type field
          * in /proc/mounts will be "type.subtype"
@@ -1426,7 +1433,8 @@ extern void dentry_unhash(struct dentry *dentry);
  * VFS file helper functions.
  */
 extern int file_permission(struct file *, int);
-
+extern void inode_init_owner(struct inode *inode, const struct inode *dir,
+                        mode_t mode);
 /*
  * VFS FS_IOC_FIEMAP helper definitions.
  */
@@ -1474,8 +1482,8 @@ struct block_device_operations;
 
 /*
  * NOTE:
- * read, write, poll, fsync, readv, writev, unlocked_ioctl and compat_ioctl
- * can be called without the big kernel lock held in all filesystems.
+ * all file operations except setlease can be called without
+ * the big kernel lock held in all filesystems.
  */
 struct file_operations {
         struct module *owner;
@@ -1486,14 +1494,13 @@ struct file_operations {
         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
         int (*readdir) (struct file *, void *, filldir_t);
         unsigned int (*poll) (struct file *, struct poll_table_struct *);
-        int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);
         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
         int (*mmap) (struct file *, struct vm_area_struct *);
         int (*open) (struct inode *, struct file *);
         int (*flush) (struct file *, fl_owner_t id);
         int (*release) (struct inode *, struct file *);
-        int (*fsync) (struct file *, struct dentry *, int datasync);
+        int (*fsync) (struct file *, int datasync);
         int (*aio_fsync) (struct kiocb *, int datasync);
         int (*fasync) (int, struct file *, int);
         int (*lock) (struct file *, int, struct file_lock *);
@@ -1555,9 +1562,9 @@ struct super_operations {
         void (*destroy_inode)(struct inode *);
 
         void (*dirty_inode) (struct inode *);
-        int (*write_inode) (struct inode *, int);
-        void (*drop_inode) (struct inode *);
-        void (*delete_inode) (struct inode *);
+        int (*write_inode) (struct inode *, struct writeback_control *wbc);
+        int (*drop_inode) (struct inode *);
+        void (*evict_inode) (struct inode *);
         void (*put_super) (struct super_block *);
         void (*write_super) (struct super_block *);
         int (*sync_fs)(struct super_block *sb, int wait);
@@ -1565,7 +1572,6 @@ struct super_operations {
         int (*unfreeze_fs) (struct super_block *);
         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 *);
 
         int (*show_options)(struct seq_file *, struct vfsmount *);
@@ -1610,8 +1616,8 @@ struct super_operations {
  * I_FREEING            Set when inode is about to be freed but still has dirty
  *                      pages or buffers attached or the inode itself is still
  *                      dirty.
- * I_CLEAR              Set by clear_inode().  In this state the inode is clean
- *                      and can be destroyed.
+ * I_CLEAR              Added by end_writeback().  In this state the inode is clean
+ *                      and can be destroyed.  Inode keeps I_FREEING.
  *
  *                      Inodes that are I_WILL_FREE, I_FREEING or I_CLEAR are
  *                      prohibited for many purposes.  iget() must wait for
@@ -1739,6 +1745,7 @@ struct file_system_type {
 
         struct lock_class_key s_lock_key;
         struct lock_class_key s_umount_key;
+        struct lock_class_key s_vfs_rename_key;
 
         struct lock_class_key i_lock_key;
         struct lock_class_key i_mutex_key;
@@ -1776,8 +1783,19 @@ extern int get_sb_pseudo(struct file_system_type *, char *,
         const struct super_operations *ops, unsigned long,
         struct vfsmount *mnt);
 extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb);
-int __put_super_and_need_restart(struct super_block *sb);
-void put_super(struct super_block *sb);
+
+static inline void sb_mark_dirty(struct super_block *sb)
+{
+        sb->s_dirt = 1;
+}
+static inline void sb_mark_clean(struct super_block *sb)
+{
+        sb->s_dirt = 0;
+}
+static inline int sb_is_dirty(struct super_block *sb)
+{
+        return sb->s_dirt;
+}
 
 /* Alas, no aliases. Too much hassle with bringing module.h everywhere */
 #define fops_get(fops) \
@@ -1794,8 +1812,12 @@ extern int may_umount(struct vfsmount *);
 extern long do_mount(char *, char *, char *, unsigned long, void *);
 extern struct vfsmount *collect_mounts(struct path *);
 extern void drop_collected_mounts(struct vfsmount *);
-
-extern int vfs_statfs(struct dentry *, struct kstatfs *);
+extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
+                          struct vfsmount *);
+extern int vfs_statfs(struct path *, struct kstatfs *);
+extern int statfs_by_dentry(struct dentry *, struct kstatfs *);
+extern int freeze_super(struct super_block *super);
+extern int thaw_super(struct super_block *super);
 
 extern int current_umask(void);
 
@@ -2058,12 +2080,6 @@ extern int invalidate_inodes(struct super_block *);
 unsigned long invalidate_mapping_pages(struct address_space *mapping,
                                         pgoff_t start, pgoff_t end);
 
-static inline unsigned long __deprecated
-invalidate_inode_pages(struct address_space *mapping)
-{
-        return invalidate_mapping_pages(mapping, 0, ~0UL);
-}
-
 static inline void invalidate_remote_inode(struct inode *inode)
 {
         if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
@@ -2087,9 +2103,9 @@ extern int __filemap_fdatawrite_range(struct address_space *mapping,
 extern int filemap_fdatawrite_range(struct address_space *mapping,
                                 loff_t start, loff_t end);
 
-extern int vfs_fsync_range(struct file *file, struct dentry *dentry,
-                           loff_t start, loff_t end, int datasync);
-extern int vfs_fsync(struct file *file, struct dentry *dentry, int datasync);
+extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
+                           int datasync);
+extern int vfs_fsync(struct file *file, int datasync);
 extern int generic_write_sync(struct file *file, loff_t pos, loff_t count);
 extern void sync_supers(void);
 extern void emergency_sync(void);
@@ -2132,6 +2148,7 @@ extern struct file * open_exec(const char *);
  
 /* fs/dcache.c -- generic fs support functions */
 extern int is_subdir(struct dentry *, struct dentry *);
+extern int path_is_under(struct path *, struct path *);
 extern ino_t find_inode_number(struct dentry *, struct qstr *);
 
 #include <linux/err.h>
@@ -2148,9 +2165,8 @@ extern void iput(struct inode *);
 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 int generic_detach_inode(struct inode *inode);
+extern int generic_delete_inode(struct inode *inode);
+extern int generic_drop_inode(struct inode *inode);
 
 extern struct inode *ilookup5_nowait(struct super_block *sb,
                 unsigned long hashval, int (*test)(struct inode *, void *),
@@ -2167,7 +2183,7 @@ extern void unlock_new_inode(struct inode *);
 
 extern void __iget(struct inode * inode);
 extern void iget_failed(struct inode *);
-extern void clear_inode(struct inode *);
+extern void end_writeback(struct inode *);
 extern void destroy_inode(struct inode *);
 extern void __destroy_inode(struct inode *);
 extern struct inode *new_inode(struct super_block *);
@@ -2180,10 +2196,7 @@ static inline void insert_inode_hash(struct inode *inode) {
         __insert_inode_hash(inode, inode->i_ino);
 }
 
-extern void file_move(struct file *f, struct list_head *list);
-extern void file_kill(struct file *f);
 #ifdef CONFIG_BLOCK
-struct bio;
 extern void submit_bio(int, struct bio *);
 extern int bdev_read_only(struct block_device *);
 #endif
@@ -2211,6 +2224,7 @@ extern int generic_segment_checks(const struct iovec *iov,
 /* fs/block_dev.c */
 extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
                                 unsigned long nr_segs, loff_t pos);
+extern int blkdev_fsync(struct file *filp, int datasync);
 
 /* fs/splice.c */
 extern ssize_t generic_file_splice_read(struct file *, loff_t *,
@@ -2226,6 +2240,7 @@ extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
 
 extern void
 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
+extern loff_t noop_llseek(struct file *file, loff_t offset, int origin);
 extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
 extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
 extern loff_t generic_file_llseek_unlocked(struct file *file, loff_t offset,
@@ -2248,10 +2263,8 @@ static inline int xip_truncate_page(struct address_space *mapping, loff_t from)
 #endif
 
 #ifdef CONFIG_BLOCK
-ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
-        struct block_device *bdev, const struct iovec *iov, loff_t offset,
-        unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
-        int lock_type);
+typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
+                            loff_t file_offset);
 
 enum {
         /* need locking between buffered and direct access */
@@ -2261,24 +2274,22 @@ enum {
         DIO_SKIP_HOLES  = 0x02,
 };
 
+void dio_end_io(struct bio *bio, int error);
+
+ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
+        struct block_device *bdev, const struct iovec *iov, loff_t offset,
+        unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
+        dio_submit_t submit_io, int flags);
+
 static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
         struct inode *inode, struct block_device *bdev, const struct iovec *iov,
         loff_t offset, unsigned long nr_segs, get_block_t get_block,
         dio_iodone_t end_io)
 {
         return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
-                                    nr_segs, get_block, end_io,
+                                    nr_segs, get_block, end_io, NULL,
                                     DIO_LOCKING | DIO_SKIP_HOLES);
 }
-
-static inline ssize_t blockdev_direct_IO_no_locking(int rw, struct kiocb *iocb,
-        struct inode *inode, struct block_device *bdev, const struct iovec *iov,
-        loff_t offset, unsigned long nr_segs, get_block_t get_block,
-        dio_iodone_t end_io)
-{
-        return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
-                                nr_segs, get_block, end_io, 0);
-}
 #endif
 
 extern const struct file_operations generic_ro_fops;
@@ -2305,16 +2316,17 @@ void inode_set_bytes(struct inode *inode, loff_t bytes);
 
 extern int vfs_readdir(struct file *, filldir_t, void *);
 
-extern int vfs_stat(char __user *, struct kstat *);
-extern int vfs_lstat(char __user *, struct kstat *);
+extern int vfs_stat(const char __user *, struct kstat *);
+extern int vfs_lstat(const char __user *, struct kstat *);
 extern int vfs_fstat(unsigned int, struct kstat *);
-extern int vfs_fstatat(int , char __user *, struct kstat *, int);
+extern int vfs_fstatat(int , const char __user *, struct kstat *, int);
 
 extern int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
                     unsigned long arg);
 extern int __generic_block_fiemap(struct inode *inode,
-                                  struct fiemap_extent_info *fieinfo, u64 start,
-                                  u64 len, get_block_t *get_block);
+                                  struct fiemap_extent_info *fieinfo,
+                                  loff_t start, loff_t len,
+                                  get_block_t *get_block);
 extern int generic_block_fiemap(struct inode *inode,
                                 struct fiemap_extent_info *fieinfo, u64 start,
                                 u64 len, get_block_t *get_block);
@@ -2326,22 +2338,22 @@ extern struct super_block *get_super(struct block_device *);
 extern struct super_block *get_active_super(struct block_device *bdev);
 extern struct super_block *user_get_super(dev_t);
 extern void drop_super(struct super_block *sb);
+extern void iterate_supers(void (*)(struct super_block *, void *), void *);
 
 extern int dcache_dir_open(struct inode *, struct file *);
 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_setattr(struct dentry *, struct iattr *);
 extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 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 *);
 extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
-extern int simple_sync_file(struct file *, struct dentry *, int);
+extern int noop_fsync(struct file *, int);
 extern int simple_empty(struct dentry *);
 extern int simple_readpage(struct file *file, struct page *page);
-extern int simple_prepare_write(struct file *file, struct page *page,
-                        unsigned offset, unsigned to);
 extern int simple_write_begin(struct file *file, struct address_space *mapping,
                         loff_t pos, unsigned len, unsigned flags,
                         struct page **pagep, void **fsdata);
@@ -2355,14 +2367,16 @@ extern const struct file_operations simple_dir_operations;
 extern const struct inode_operations simple_dir_inode_operations;
 struct tree_descr { char *name; const struct file_operations *ops; int mode; };
 struct dentry *d_alloc_name(struct dentry *, const char *);
-extern int simple_fill_super(struct super_block *, int, struct tree_descr *);
+extern int simple_fill_super(struct super_block *, unsigned long, struct tree_descr *);
 extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count);
 extern void simple_release_fs(struct vfsmount **mount, int *count);
 
 extern ssize_t simple_read_from_buffer(void __user *to, size_t count,
                         loff_t *ppos, const void *from, size_t available);
+extern ssize_t simple_write_to_buffer(void *to, size_t available, loff_t *ppos,
+                const void __user *from, size_t count);
 
-extern int simple_fsync(struct file *, struct dentry *, int);
+extern int generic_file_fsync(struct file *, int);
 
 #ifdef CONFIG_MIGRATION
 extern int buffer_migrate_page(struct address_space *,
@@ -2373,7 +2387,7 @@ extern int buffer_migrate_page(struct address_space *,
 
 extern int inode_change_ok(const struct inode *, struct iattr *);
 extern int inode_newsize_ok(const struct inode *, loff_t offset);
-extern int __must_check inode_setattr(struct inode *, struct iattr *);
+extern void setattr_copy(struct inode *inode, const struct iattr *attr);
 
 extern void file_update_time(struct file *file);
 
@@ -2464,7 +2478,8 @@ int proc_nr_files(struct ctl_table *table, int write,
 int __init get_filesystem_list(char *buf);
 
 #define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE])
-#define OPEN_FMODE(flag) ((__force fmode_t)((flag + 1) & O_ACCMODE))
+#define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \
+                                            (flag & FMODE_NONOTIFY)))
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_FS_H */