Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...

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

diff --git a/include/linux/fs.h b/include/linux/fs.h
index cc2e0f5a8fd10baef7614ba3ad9090608fdb8256..33d8e45cd874b7b25d9fc570b26c6df4dfea83e2 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -392,7 +392,7 @@ struct address_space {
        struct radix_tree_root  page_tree;      /* radix tree of all pages */
        spinlock_t              tree_lock;      /* and lock protecting it */
        atomic_t                i_mmap_writable;/* count VM_SHARED mappings */
-       struct rb_root          i_mmap;         /* tree of private and shared mappings */
+       struct rb_root_cached   i_mmap;         /* tree of private and shared mappings */
        struct rw_semaphore     i_mmap_rwsem;   /* protect tree, count, list */
        /* Protected by tree_lock together with the radix tree */
        unsigned long           nrpages;        /* number of total pages */
@@ -429,6 +429,7 @@ struct block_device {
 #endif
        struct block_device *   bd_contains;
        unsigned                bd_block_size;
+       u8                      bd_partno;
        struct hd_struct *      bd_part;
        /* number of times partitions within this device have been opened. */
        unsigned                bd_part_count;
@@ -486,7 +487,7 @@ static inline void i_mmap_unlock_read(struct address_space *mapping)
  */
 static inline int mapping_mapped(struct address_space *mapping)
 {
-       return  !RB_EMPTY_ROOT(&mapping->i_mmap);
+       return  !RB_EMPTY_ROOT(&mapping->i_mmap.rb_root);
 }
 
 /*
@@ -1002,7 +1003,6 @@ struct file_lock {
        unsigned char fl_type;
        unsigned int fl_pid;
        int fl_link_cpu;                /* what cpu's list is this on? */
-       struct pid *fl_nspid;
        wait_queue_head_t fl_wait;
        struct file *fl_file;
        loff_t fl_start;
@@ -1235,7 +1235,7 @@ static inline struct inode *file_inode(const struct file *f)
 
 static inline struct dentry *file_dentry(const struct file *file)
 {
-       return d_real(file->f_path.dentry, file_inode(file), 0);
+       return d_real(file->f_path.dentry, file_inode(file), 0, 0);
 }
 
 static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
@@ -1270,8 +1270,6 @@ extern void f_delown(struct file *filp);
 extern pid_t f_getown(struct file *filp);
 extern int send_sigurg(struct fown_struct *fown);
 
-struct mm_struct;
-
 /*
  *     Umount options
  */
@@ -2545,12 +2543,19 @@ extern int invalidate_inode_pages2_range(struct address_space *mapping,
 extern int write_inode_now(struct inode *, int);
 extern int filemap_fdatawrite(struct address_space *);
 extern int filemap_flush(struct address_space *);
-extern int filemap_fdatawait(struct address_space *);
 extern int filemap_fdatawait_keep_errors(struct address_space *mapping);
 extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
                                   loff_t lend);
+
+static inline int filemap_fdatawait(struct address_space *mapping)
+{
+       return filemap_fdatawait_range(mapping, 0, LLONG_MAX);
+}
+
 extern bool filemap_range_has_page(struct address_space *, loff_t lstart,
                                  loff_t lend);
+extern int __must_check file_fdatawait_range(struct file *file, loff_t lstart,
+                                               loff_t lend);
 extern int filemap_write_and_wait(struct address_space *mapping);
 extern int filemap_write_and_wait_range(struct address_space *mapping,
                                        loff_t lstart, loff_t lend);
@@ -2559,12 +2564,19 @@ 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 filemap_check_errors(struct address_space *mapping);
-
 extern void __filemap_set_wb_err(struct address_space *mapping, int err);
+
+extern int __must_check file_fdatawait_range(struct file *file, loff_t lstart,
+                                               loff_t lend);
 extern int __must_check file_check_and_advance_wb_err(struct file *file);
 extern int __must_check file_write_and_wait_range(struct file *file,
                                                loff_t start, loff_t end);
 
+static inline int file_write_and_wait(struct file *file)
+{
+       return file_write_and_wait_range(file, 0, LLONG_MAX);
+}
+
 /**
  * filemap_set_wb_err - set a writeback error on an address_space
  * @mapping: mapping in which to set writeback error
@@ -2578,8 +2590,6 @@ extern int __must_check file_write_and_wait_range(struct file *file,
  * When a writeback error occurs, most filesystems will want to call
  * filemap_set_wb_err to record the error in the mapping so that it will be
  * automatically reported whenever fsync is called on the file.
- *
- * FIXME: mention FS_* flag here?
  */
 static inline void filemap_set_wb_err(struct address_space *mapping, int err)
 {
@@ -2837,6 +2847,7 @@ static inline void lockdep_annotate_inode_mutex_key(struct inode *inode) { };
 #endif
 extern void unlock_new_inode(struct inode *);
 extern unsigned int get_next_ino(void);
+extern void evict_inodes(struct super_block *sb);
 
 extern void __iget(struct inode * inode);
 extern void iget_failed(struct inode *);
@@ -3004,6 +3015,10 @@ void __inode_add_bytes(struct inode *inode, loff_t bytes);
 void inode_add_bytes(struct inode *inode, loff_t bytes);
 void __inode_sub_bytes(struct inode *inode, loff_t bytes);
 void inode_sub_bytes(struct inode *inode, loff_t bytes);
+static inline loff_t __inode_get_bytes(struct inode *inode)
+{
+       return (((loff_t)inode->i_blocks) << 9) + inode->i_bytes;
+}
 loff_t inode_get_bytes(struct inode *inode);
 void inode_set_bytes(struct inode *inode, loff_t bytes);
 const char *simple_get_link(struct dentry *, struct inode *,
@@ -3028,8 +3043,7 @@ static inline int vfs_lstat(const char __user *name, struct kstat *stat)
 static inline int vfs_fstatat(int dfd, const char __user *filename,
                              struct kstat *stat, int flags)
 {
-       return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
-                        stat, STATX_BASIC_STATS);
+       return vfs_statx(dfd, filename, flags, stat, STATX_BASIC_STATS);
 }
 static inline int vfs_fstat(int fd, struct kstat *stat)
 {