/* protect against the workqueue changing the page list */
mutex_lock(&fbdefio->lock);
- /* first write in this cycle, notify the driver */
- if (fbdefio->first_io && list_empty(&fbdefio->pagereflist))
- fbdefio->first_io(info);
-
pageref = fb_deferred_io_pageref_get(info, offset, page);
if (WARN_ON_ONCE(!pageref)) {
ret = VM_FAULT_OOM;
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);
};
#endif