On Fri, May 06, 2016 at 06:12:16PM +0200, Christoph Hellwig wrote: > On Thu, May 05, 2016 at 11:54:25AM -0400, Mike Snitzer wrote: > > From: Joe Thornber <ejt@xxxxxxxxxx> > > > > There is little benefit to doing this but it does structure DM thinp's > > code to more cleanly use the __blkdev_issue_discard() interface -- > > particularly in passdown_double_checking_shared_status(). > > As-is I think it makes the code a whole lot more convoluted, and especially > the structure that's just used to communicated 4 parameters between > functions which don't even use all of them isn't very helpful. I started coding it inline, and then factored it out because I thought it was cleaner. I'm also likely to lift it into a separate file for use in dm-cache too. > This is a useful helper I think, but passing tc and bio directly would > make it even more obvious. y, this is exactly what I had. > Both the plugging and the bi_error handling would benefit from being > moved into process_prepared_discard_passdown and handled in the common > path. But the plugging and error handling are called from two places. process_prepared_discard_passdown() and passdown_double_checking_shared_status(). - Joe (I agree about the confusing comment, we'll remove) -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
