drop unused dentry argument to ->fsync

[safe/jmp/linux-2.6] / Documentation / filesystems / vfs.txt

diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 041cb77..d4f5731 100644 (file)
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -72,7 +72,7 @@ structure (this is the kernel-side implementation of file
 descriptors). The freshly allocated file structure is initialized with
 a pointer to the dentry and a set of file operation member functions.
 These are taken from the inode data. The open() file method is then
-called so the specific filesystem implementation can do it's work. You
+called so the specific filesystem implementation can do its work. You
 can see that this is another switch performed by the VFS. The file
 structure is placed into the file descriptor table for the process.
 
@@ -210,8 +210,8 @@ struct super_operations {
         void (*put_super) (struct super_block *);
         void (*write_super) (struct super_block *);
         int (*sync_fs)(struct super_block *sb, int wait);
-        void (*write_super_lockfs) (struct super_block *);
-        void (*unlockfs) (struct super_block *);
+        int (*freeze_fs) (struct super_block *);
+        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 *);
@@ -270,15 +270,14 @@ or bottom half).
        a superblock. The second parameter indicates whether the method
        should wait until the write out has been completed. Optional.
 
-  write_super_lockfs: called when VFS is locking a filesystem and
+  freeze_fs: called when VFS is locking a filesystem and
        forcing it into a consistent state.  This method is currently
        used by the Logical Volume Manager (LVM).
 
-  unlockfs: called when VFS is unlocking a filesystem and making it writable
+  unfreeze_fs: called when VFS is unlocking a filesystem and making it writable
        again.
 
-  statfs: called when the VFS needs to get filesystem statistics. This
-       is called with the kernel lock held
+  statfs: called when the VFS needs to get filesystem statistics.
 
   remount_fs: called when the filesystem is remounted. This is called
        with the kernel lock held
@@ -473,7 +472,7 @@ __sync_single_inode) to check if ->writepages has been successful in
 writing out the whole address_space.
 
 The Writeback tag is used by filemap*wait* and sync_page* functions,
-via wait_on_page_writeback_range, to wait for all writeback to
+via filemap_fdatawait_range, to wait for all writeback to
 complete.  While waiting ->sync_page (if defined) will be called on
 each page that is found to require writeback.
 
@@ -537,6 +536,7 @@ struct address_space_operations {
        /* migrate the contents of a page to the specified target */
        int (*migratepage) (struct page *, struct page *);
        int (*launder_page) (struct page *);
+       int (*error_remove_page) (struct mapping *mapping, struct page *page);
 };
 
   writepage: called by the VM to write a dirty page to backing store.
@@ -695,6 +695,12 @@ struct address_space_operations {
        prevent redirtying the page, it is kept locked during the whole
        operation.
 
+  error_remove_page: normally set to generic_error_remove_page if truncation
+       is ok for this address space. Used for memory failure handling.
+       Setting this implies you deal with pages going away under you,
+       unless you have them locked or reference counts increased.
+
+
 The File Object
 ===============
 
@@ -723,7 +729,7 @@ struct file_operations {
        int (*open) (struct inode *, struct file *);
        int (*flush) (struct file *);
        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 *);
@@ -733,7 +739,6 @@ struct file_operations {
        ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
        unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
        int (*check_flags)(int);
-       int (*dir_notify)(struct file *filp, unsigned long arg);
        int (*flock) (struct file *, int, struct file_lock *);
        ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int);
        ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
@@ -800,8 +805,6 @@ otherwise noted.
 
   check_flags: called by the fcntl(2) system call for F_SETFL command
 
-  dir_notify: called by the fcntl(2) system call for F_NOTIFY command
-
   flock: called by the flock(2) system call
 
   splice_write: called by the VFS to splice data from a pipe to a file. This