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authorPaul Mundt <lethal@linux-sh.org>2007-05-08 03:37:41 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 14:15:27 -0400
commit5e841b88d23d0ea0a6ee4e76c489899d4d23ce25 (patch)
tree7268b4bbb85aa7b1c72f54f7f8cd309b34cfecce /include/linux/fb.h
parent7bf1ea33ad70cf49638092367d52859fbbc44fee (diff)
fb: fsync() method for deferred I/O flush.
There are cases when we do not want to wait on the delay for automatically updating the "real" framebuffer, this implements a simple ->fsync() hook for explicitly flushing the deferred I/O work. The ->page_mkwrite() handler will rearm the work queue normally. (akpm: nuke unneeded ifdefs, forward-delcare struct dentry) Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Jaya Kumar <jayakumar.lkml@gmail.com> Acked-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/fb.h')
-rw-r--r--include/linux/fb.h6
1 files changed, 4 insertions, 2 deletions
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 @@
4#include <asm/types.h> 4#include <asm/types.h>
5#include <linux/i2c.h> 5#include <linux/i2c.h>
6 6
7struct dentry;
8
7/* Definitions of frame buffers */ 9/* Definitions of frame buffers */
8 10
9#define FB_MAJOR 29 11#define FB_MAJOR 29
@@ -927,11 +929,11 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
927 } 929 }
928} 930}
929 931
930#ifdef CONFIG_FB_DEFERRED_IO
931/* drivers/video/fb_defio.c */ 932/* drivers/video/fb_defio.c */
932extern void fb_deferred_io_init(struct fb_info *info); 933extern void fb_deferred_io_init(struct fb_info *info);
933extern void fb_deferred_io_cleanup(struct fb_info *info); 934extern void fb_deferred_io_cleanup(struct fb_info *info);
934#endif 935extern int fb_deferred_io_fsync(struct file *file, struct dentry *dentry,
936 int datasync);
935 937
936/* drivers/video/fbsysfs.c */ 938/* drivers/video/fbsysfs.c */
937extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); 939extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);