Re: [PATCH] staging: exfat: add exfat filesystem code to staging

[Dan Carpenter]

On Fri, Aug 30, 2019 at 12:04:41AM +0800, Gao Xiang wrote:
> Anyway, I'm fine to delete them all if you like, but I think majority of these
> are meaningful.
> 
> data.c-		/* page is already locked */
> data.c-		DBG_BUGON(PageUptodate(page));
> data.c-
> data.c:		if (unlikely(err))
> data.c-			SetPageError(page);
> data.c-		else
> data.c-			SetPageUptodate(page);

If we cared about speed here then we would delete the DBG_BUGON() check
because that's going to be expensive.  The likely/unlikely annotations
should be used in places a reasonable person thinks it will make a
difference to benchmarks.

regards,
dan carpenter