diff options
Diffstat (limited to 'include/linux/fb.h')
| -rw-r--r-- | include/linux/fb.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/include/linux/fb.h b/include/linux/fb.h index f95da1af9ff6..69c67c70fa78 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -201,12 +201,19 @@ struct fb_pixmap { }; #ifdef CONFIG_FB_DEFERRED_IO +struct fb_deferred_io_pageref { + struct page *page; + unsigned long offset; + /* private */ + struct list_head list; +}; + struct fb_deferred_io { /* delay between mkwrite and deferred handler */ unsigned long delay; - bool sort_pagelist; /* sort pagelist by offset */ - struct mutex lock; /* mutex that protects the page list */ - struct list_head pagelist; /* list of touched pages */ + bool sort_pagereflist; /* sort pagelist by offset */ + struct mutex lock; /* mutex that protects the pageref list */ + struct list_head pagereflist; /* list of pagerefs for touched pages */ /* callback */ void (*first_io)(struct fb_info *info); void (*deferred_io)(struct fb_info *info, struct list_head *pagelist); @@ -468,6 +475,8 @@ struct fb_info { #endif #ifdef CONFIG_FB_DEFERRED_IO struct delayed_work deferred_work; + unsigned long npagerefs; + struct fb_deferred_io_pageref *pagerefs; struct fb_deferred_io *fbdefio; #endif @@ -661,7 +670,7 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, /* drivers/video/fb_defio.c */ int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma); -extern void fb_deferred_io_init(struct fb_info *info); +extern int fb_deferred_io_init(struct fb_info *info); extern void fb_deferred_io_open(struct fb_info *info, struct inode *inode, struct file *file); |