On Mon, Jul 18, 2011 at 11:40:08AM -0400, Christoph Hellwig wrote: > On Mon, Jul 18, 2011 at 10:17:08AM +0200, Eric Dumazet wrote: > > > Tim posted a patch, but it wasn't applied for unknown reasons. > > > > > > https://lkml.org/lkml/2011/4/13/561 > > > > > > > Could Tim respin his patch then ? > > Btw, it seems like most kern_mount users want this and he's still > missing some like devtmpfs, sysfs or ipc. What about splitting > kern_mount into a variant that gets a long-term reference for these > callers, and one that doesn't for afs/cifs/nfs automounts? Careful - we need to balance that on shutdown side with mnt_make_shortterm() before the final mntput()... Making it too easy just on the kern_mount side will lead to easy-to-miss bugs. For one thing, it's visible only on SMP boxen; for another there's a lot of such internal vfsmounts (pipefs, sockets, etc.) that are never shut down, so there'll be no easily copied examples of what should not be forgotten on __exit side of things in obvious places... FWIW, I had missed the original posting back in April - had been without net.access then and it hadn't been resent when I came back, asked people to resend the important ones and shitcanned the huge pile of pending mail from the previous month... -- 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
