On Fri, May 18, 2012 at 05:43:19PM +0100, Alasdair G Kergon wrote: > On Fri, May 18, 2012 at 08:57:29AM -0700, Tejun Heo wrote: > > Please explain why this is done and how it's safe. Alasdair / dm > > folks, can you please ack this? > > I think it's relying on there being never more than one reference on those > bios so that that endio fn, called exactly once, always frees it and there > are no dm_puts elsewhere.
Is that a safe assumption? From my perusal of the code it certainly looks like it should be, but I don't know dm all that well. Seems like it might be better to use bio set's front_pad to put it in the same allocation as the bio, but I don't really want to get into that myself. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
