Call for testing: VM bugs in 10.3

[Ian Lepore]

On Tue, 2016-08-02 at 22:25 +0300, Konstantin Belousov wrote:
> Below is the merge of some high-profile virtual memory subsystem bug
> fixes from stable/10 to 10.3. I merged fixes for bugs reported by
> users, issues which are even theoretically unlikely to occur in real
> world loads, are not included into the patch set. The later is mostly
> corrections for the handling of radix insertion failures. Included
> fixes
> are for random SIGSEGV delivered to processes, hangs on "vodead"
> state
> on filesystem operations, and several others.
> 
> List of the merged revisions:
> r301184 prevent parallel object collapses, fixes object lifecycle
> r301436 do not leak the vm object lock, fixes overcommit disable
> r302243 avoid the active object marking for vm.vmtotal sysctl, fixes
> 	"vodead" hangs
> r302513 vm_fault() race with the vm_object_collapse(), fixes spurious
> SIGSEGV
> r303291 postpone BO_DEAD, fixes panic on fast vnode reclaim
> 
> I am asking for some testing, it is not necessary for your system to
> exhibit the problematic behaviour for your testing to be useful. I am
> more looking for smoke-testing kind of confirmation that patch is
> fine.
> Neither I nor people who usually help me with testing,  run 10.3
> systems.
> 
> If everything appear to be fine, my intent is to ask re/so to issue
> Errata Notice with these changes in about a week from now.
> 
> Index: sys/kern/vfs_subr.c
> [...]

I run 10-stable on my everyday desktop/build machine, but my mail
client ruined the format of the patches.  Can I just 'svn up' on the 10
-stable branch and then MFC the revs you list above, or are there hand
-tweaks to the patches you attached?

-- Ian