Jeff Layton <jlayton@xxxxxxxxxx> writes: >> Hmm. Looking at the code I get the impression that a file bind mount >> will have exactly the same problem. >> >> Can you confirm. >> >> If file bind mounts also have this problem a bugfix to to just >> proc seems questionable. >> > > I'm not sure I understand what you mean by "file bind mount". Is that > something like mounting with "-o loop" ? # cd /tmp # echo foo > foo # echo bar > bar # mount --bind foo bar # cat bar foo # > I'm not at all opposed to fixing this in a more broad fashion, but as > best I can tell, the only place that LAST_BIND is used is in procfs. proc does appear to be the only user of LAST_BIND. With a file bind mount we can get to the same ok: label without a revalidate. The difference is that we came from __follow_mount instead of follow_link. At least that is how I read the code. Eric -- 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
