1 files changed, 68 insertions, 28 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index cc35b6ac778d..84bb449b9b01 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -9,7 +9,6 @@
 #include <linux/config.h>
 #include <linux/limits.h>
 #include <linux/ioctl.h>
-#include <linux/rcuref.h>
 
 /*
  * It's silly to have NR_OPEN bigger than NR_FILE, but you can change
@@ -104,19 +103,18 @@ extern int dir_notify_enable;
 #define MS_MOVE         8192
 #define MS_REC          16384
 #define MS_VERBOSE      32768
+#define MS_POSIXACL     (1<<16) /* VFS does not apply the umask */
 #define MS_UNBINDABLE   (1<<17) /* change to unbindable */
 #define MS_PRIVATE      (1<<18) /* change to private */
 #define MS_SLAVE        (1<<19) /* change to slave */
 #define MS_SHARED       (1<<20) /* change to shared */
-#define MS_POSIXACL     (1<<16) /* VFS does not apply the umask */
 #define MS_ACTIVE       (1<<30)
 #define MS_NOUSER       (1<<31)
 
 /*
  * Superblock flags that can be altered by MS_REMOUNT
  */
-#define MS_RMT_MASK     (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_NOATIME|\
-                         MS_NODIRATIME)
+#define MS_RMT_MASK     (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK)
 
 /*
  * Old magic mount flag and mask
@@ -162,8 +160,6 @@ extern int dir_notify_enable;
 #define IS_NOQUOTA(inode)       ((inode)->i_flags & S_NOQUOTA)
 #define IS_APPEND(inode)        ((inode)->i_flags & S_APPEND)
 #define IS_IMMUTABLE(inode)     ((inode)->i_flags & S_IMMUTABLE)
-#define IS_NOATIME(inode)       (__IS_FLG(inode, MS_NOATIME) || ((inode)->i_flags & S_NOATIME))
-#define IS_NODIRATIME(inode)    __IS_FLG(inode, MS_NODIRATIME)
 #define IS_POSIXACL(inode)      __IS_FLG(inode, MS_POSIXACL)
 
 #define IS_DEADDIR(inode)       ((inode)->i_flags & S_DEAD)
@@ -220,11 +216,13 @@ extern int dir_notify_enable;
 #include <linux/prio_tree.h>
 #include <linux/init.h>
 #include <linux/sched.h>
+#include <linux/mutex.h>
 
 #include <asm/atomic.h>
 #include <asm/semaphore.h>
 #include <asm/byteorder.h>
 
+struct hd_geometry;
 struct iovec;
 struct nameidata;
 struct kiocb;
@@ -234,9 +232,6 @@ struct kstatfs;
 struct vm_area_struct;
 struct vfsmount;
 
-/* Used to be a macro which just called the function, now just a function */
-extern void update_atime (struct inode *);
-
 extern void __init inode_init(unsigned long);
 extern void __init inode_init_early(void);
 extern void __init mnt_init(unsigned long);
@@ -302,6 +297,37 @@ struct iattr {
  */
 #include <linux/quota.h>
 
+/** 
+ * enum positive_aop_returns - aop return codes with specific semantics
+ *
+ * @AOP_WRITEPAGE_ACTIVATE: Informs the caller that page writeback has
+ *                          completed, that the page is still locked, and
+ *                          should be considered active.  The VM uses this hint
+ *                          to return the page to the active list -- it won't
+ *                          be a candidate for writeback again in the near
+ *                          future.  Other callers must be careful to unlock
+ *                          the page if they get this return.  Returned by
+ *                          writepage(); 
+ *
+ * @AOP_TRUNCATED_PAGE: The AOP method that was handed a locked page has
+ *                      unlocked it and the page might have been truncated.
+ *                      The caller should back up to acquiring a new page and
+ *                      trying again.  The aop will be taking reasonable
+ *                      precautions not to livelock.  If the caller held a page
+ *                      reference, it should drop it before retrying.  Returned
+ *                      by readpage(), prepare_write(), and commit_write().
+ *
+ * address_space_operation functions return these large constants to indicate
+ * special semantics to the caller.  These are much larger than the bytes in a
+ * page to allow for functions that return the number of bytes operated on in a
+ * given page.
+ */
+
+enum positive_aop_returns {
+        AOP_WRITEPAGE_ACTIVATE  = 0x80000,
+        AOP_TRUNCATED_PAGE      = 0x80001,
+};
+
 /*
  * oh the beauties of C type declarations.
  */
@@ -453,7 +479,7 @@ struct inode {
         unsigned long           i_blocks;
         unsigned short          i_bytes;
         spinlock_t              i_lock; /* i_blocks, i_bytes, maybe i_size */
-        struct semaphore        i_sem;
+        struct mutex            i_mutex;
         struct rw_semaphore     i_alloc_sem;
         struct inode_operations *i_op;
         struct file_operations  *i_fop; /* former ->i_op->default_file_ops */
@@ -622,7 +648,7 @@ 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)     rcuref_inc(&(x)->f_count)
+#define get_file(x)     atomic_inc(&(x)->f_count)
 #define file_count(x)   atomic_read(&(x)->f_count)
 
 #define MAX_NON_LFS     ((1UL<<31) - 1)
@@ -729,7 +755,7 @@ extern struct file_lock *posix_test_lock(struct file *, struct file_lock *);
 extern int posix_lock_file(struct file *, struct file_lock *);
 extern int posix_lock_file_wait(struct file *, struct file_lock *);
 extern void posix_block_lock(struct file_lock *, struct file_lock *);
-extern void posix_unblock_lock(struct file *, struct file_lock *);
+extern int posix_unblock_lock(struct file *, struct file_lock *);
 extern int posix_locks_deadlock(struct file_lock *, struct file_lock *);
 extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
 extern int __break_lease(struct inode *inode, unsigned int flags);
@@ -777,7 +803,6 @@ 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 long           s_old_blocksize;
         unsigned char           s_blocksize_bits;
         unsigned char           s_dirt;
         unsigned long long      s_maxbytes;     /* Max file size */
@@ -790,7 +815,7 @@ struct super_block {
         unsigned long           s_magic;
         struct dentry           *s_root;
         struct rw_semaphore     s_umount;
-        struct semaphore        s_lock;
+        struct mutex            s_lock;
         int                     s_count;
         int                     s_syncing;
         int                     s_need_sync_fs;
@@ -862,13 +887,13 @@ static inline int has_fs_excl(void)
 static inline void lock_super(struct super_block * sb)
 {
         get_fs_excl();
-        down(&sb->s_lock);
+        mutex_lock(&sb->s_lock);
 }
 
 static inline void unlock_super(struct super_block * sb)
 {
         put_fs_excl();
-        up(&sb->s_lock);
+        mutex_unlock(&sb->s_lock);
 }
 
 /*
@@ -932,6 +957,7 @@ struct block_device_operations {
         int (*direct_access) (struct block_device *, sector_t, unsigned long *);
         int (*media_changed) (struct gendisk *);
         int (*revalidate_disk) (struct gendisk *);
+        int (*getgeo)(struct block_device *, struct hd_geometry *);
         struct module *owner;
 };
 
@@ -1019,6 +1045,7 @@ struct inode_operations {
         ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
         ssize_t (*listxattr) (struct dentry *, char *, size_t);
         int (*removexattr) (struct dentry *, const char *);
+        void (*truncate_range)(struct inode *, loff_t, loff_t);
 };
 
 struct seq_file;
@@ -1085,12 +1112,7 @@ static inline void mark_inode_dirty_sync(struct inode *inode)
         __mark_inode_dirty(inode, I_DIRTY_SYNC);
 }
 
-static inline void touch_atime(struct vfsmount *mnt, struct dentry *dentry)
-{
-        /* per-mountpoint checks will go here */
-        update_atime(dentry->d_inode);
-}
-
+extern void touch_atime(struct vfsmount *mnt, struct dentry *dentry);
 static inline void file_accessed(struct file *file)
 {
         if (!(file->f_flags & O_NOATIME))
@@ -1159,7 +1181,7 @@ int sync_inode(struct inode *inode, struct writeback_control *wbc);
  *    directory.  The name should be stored in the @name (with the
  *    understanding that it is already pointing to a a %NAME_MAX+1 sized
  *    buffer.   get_name() should return %0 on success, a negative error code
- *    or error.  @get_name will be called without @parent->i_sem held.
+ *    or error.  @get_name will be called without @parent->i_mutex held.
  *
  * get_parent:
  *    @get_parent should find the parent directory for the given @child which
@@ -1181,7 +1203,7 @@ int sync_inode(struct inode *inode, struct writeback_control *wbc);
  *    nfsd_find_fh_dentry() in either the @obj or @parent parameters.
  *
  * Locking rules:
- *    get_parent is called with child->d_inode->i_sem down
+ *    get_parent is called with child->d_inode->i_mutex down
  *    get_name is not (which is possibly inconsistent)
  */
 
@@ -1268,6 +1290,9 @@ extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
 
 extern int vfs_statfs(struct super_block *, struct kstatfs *);
 
+/* /sys/fs */
+extern struct subsystem fs_subsys;
+
 #define FLOCK_VERIFY_READ  1
 #define FLOCK_VERIFY_WRITE 2
 
@@ -1313,8 +1338,10 @@ static inline int break_lease(struct inode *inode, unsigned int mode)
 
 /* fs/open.c */
 
-extern int do_truncate(struct dentry *, loff_t start, struct file *filp);
-extern long do_sys_open(const char __user *filename, int flags, int mode);
+extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
+                       struct file *filp);
+extern long do_sys_open(int fdf, const char __user *filename, int flags,
+                        int mode);
 extern struct file *filp_open(const char *, int, int);
 extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
 extern int filp_close(struct file *, fl_owner_t id);
@@ -1360,6 +1387,12 @@ extern int register_chrdev(unsigned int, const char *,
 extern int unregister_chrdev(unsigned int, const char *);
 extern void unregister_chrdev_region(dev_t, unsigned);
 extern int chrdev_open(struct inode *, struct file *);
+extern int get_chrdev_list(char *);
+extern void *acquire_chrdev_list(void);
+extern int count_chrdev_list(void);
+extern void *get_next_chrdev(void *);
+extern int get_chrdev_info(void *, int *, char **);
+extern void release_chrdev_list(void *);
 
 /* fs/block_dev.c */
 #define BDEVNAME_SIZE   32      /* Largest string for a blockdev identifier */
@@ -1368,6 +1401,11 @@ extern const char *bdevname(struct block_device *bdev, char *buffer);
 extern struct block_device *lookup_bdev(const char *);
 extern struct block_device *open_bdev_excl(const char *, int, void *);
 extern void close_bdev_excl(struct block_device *);
+extern void *acquire_blkdev_list(void);
+extern int count_blkdev_list(void);
+extern void *get_next_blkdev(void *);
+extern int get_blkdev_info(void *, int *, char **);
+extern void release_blkdev_list(void *);
 
 extern void init_special_inode(struct inode *, umode_t, dev_t);
 
@@ -1442,7 +1480,7 @@ static inline void allow_write_access(struct file *file)
 }
 extern int do_pipe(int *);
 
-extern int open_namei(const char *, int, int, struct nameidata *);
+extern int open_namei(int dfd, const char *, int, int, struct nameidata *);
 extern int may_open(struct nameidata *, int, int);
 
 extern int kernel_read(struct file *, unsigned long, char *, unsigned long);
@@ -1640,6 +1678,8 @@ 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_fd(int dfd, char __user *, struct kstat *);
+extern int vfs_lstat_fd(int dfd, char __user *, struct kstat *);
 extern int vfs_fstat(unsigned int, struct kstat *);
 
 extern int vfs_ioctl(struct file *, unsigned int, unsigned int, unsigned long);
@@ -1682,7 +1722,7 @@ extern ssize_t simple_read_from_buffer(void __user *, size_t, loff_t *, const vo
 extern int inode_change_ok(struct inode *, struct iattr *);
 extern int __must_check inode_setattr(struct inode *, struct iattr *);
 
-extern void inode_update_time(struct inode *inode, int ctime_too);
+extern void file_update_time(struct file *file);
 
 static inline ino_t parent_ino(struct dentry *dentry)
 {