drop unused dentry argument to ->fsync

Documentation/filesystems/Locking

Documentation/filesystems/vfs.txt

arch/powerpc/platforms/cell/spufs/file.c

drivers/char/ps3flash.c

drivers/mtd/ubi/cdev.c

drivers/staging/pohmelfs/inode.c

drivers/usb/gadget/printer.c

drivers/video/fb_defio.c

fs/9p/vfs_file.c

fs/affs/affs.h

fs/affs/file.c

fs/afs/internal.h

fs/afs/write.c

fs/bad_inode.c

fs/block_dev.c

fs/btrfs/ctree.h

fs/btrfs/file.c

fs/ceph/caps.c

fs/ceph/dir.c

fs/ceph/super.h