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-rw-r--r--drivers/video/fb_defio.c12
-rw-r--r--drivers/video/fbmem.c3
-rw-r--r--include/linux/fb.h6
3 files changed, 19 insertions, 2 deletions
diff --git a/drivers/video/fb_defio.c b/drivers/video/fb_defio.c
index 65f4e6ee7f94..f963f5f59b73 100644
--- a/drivers/video/fb_defio.c
+++ b/drivers/video/fb_defio.c
@@ -47,6 +47,18 @@ static struct page* fb_deferred_io_nopage(struct vm_area_struct *vma,
return page;
}
+int fb_deferred_io_fsync(struct file *file, struct dentry *dentry, int datasync)
+{
+ struct fb_info *info = file->private_data;
+
+ /* Kill off the delayed work */
+ cancel_rearming_delayed_work(&info->deferred_work);
+
+ /* Run it immediately */
+ return schedule_delayed_work(&info->deferred_work, 0);
+}
+EXPORT_SYMBOL_GPL(fb_deferred_io_fsync);
+
/* vm_ops->page_mkwrite handler */
static int fb_deferred_io_mkwrite(struct vm_area_struct *vma,
struct page *page)
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 28225265159a..44cf0e4f52e9 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1266,6 +1266,9 @@ static const struct file_operations fb_fops = {
#ifdef HAVE_ARCH_FB_UNMAPPED_AREA
.get_unmapped_area = get_fb_unmapped_area,
#endif
+#ifdef CONFIG_FB_DEFERRED_IO
+ .fsync = fb_deferred_io_fsync,
+#endif
};
struct class *fb_class;
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 8a8255b94b62..0de426026f4a 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -4,6 +4,8 @@
#include <asm/types.h>
#include <linux/i2c.h>
+struct dentry;
+
/* Definitions of frame buffers */
#define FB_MAJOR 29
@@ -927,11 +929,11 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
}
}
-#ifdef CONFIG_FB_DEFERRED_IO
/* drivers/video/fb_defio.c */
extern void fb_deferred_io_init(struct fb_info *info);
extern void fb_deferred_io_cleanup(struct fb_info *info);
-#endif
+extern int fb_deferred_io_fsync(struct file *file, struct dentry *dentry,
+ int datasync);
/* drivers/video/fbsysfs.c */
extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);