fb_deferred_io_fsync 90 drivers/video/fbdev/core/fb_defio.c EXPORT_SYMBOL_GPL(fb_deferred_io_fsync); fb_deferred_io_fsync 1476 drivers/video/fbdev/core/fbmem.c .fsync = fb_deferred_io_fsync, fb_deferred_io_fsync 667 include/linux/fb.h extern int fb_deferred_io_fsync(struct file *file, loff_t start,