On Sun, Aug 16, 2015 at 06:33:21AM -0500, Eric W. Biederman wrote: > > ... or either of us can do merging those checks into a single place, > > be it as a followup to your 7-patch series, or folded with the > > fs/dcache.c-affecting patches in there. If you have no time left, I can > > certainly do that followup myself - not a problem[1] > > I don't have time. Everytime I have worked with this it has take pretty > much full days of staring at the code, and I don't have any more full > days left before the merge window. OK, at that point I've pretty much given up on fs_pin for this cycle. And testing your variant with unconditional checks on .. appears to have fairly low overhead. I still want to deal with catching and unmounting the unreachable suckers, so fs/dcache.c side of things will get used when we get to that stuff, but for now I've taken your 1/7, 2/7 plus the variant of "vfs: Test for and handle paths that are unreachable from their mnt_root" that doesn't care whether anything escaped or not. 3--6 are held in a local branch for now; I *am* going to use them come next cycle. And there's another pile of fun around that area, also for the next cycle - kernel-initiated subtree removals on things like sysfs et.al.; handling of the locking in those is inconsistent and tied with the fun we have for d_move()/__d_unalias(). Sigh... -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
