[Announce] Kernel RHEL6 testing 042stab072.2

[Kir Kolyshkin]

OpenVZ project has released an updated RHEL6 based
testing kernel. Read below for more information.

NOTE that this is a *testing* kernel, not recommended for production.


Changes
=======
Since 042stab070.11:
* Rebase to RHEL6.3 kernel 2.6.32-279.19.1.el6 (security and bug fixes, 
see RHSA-2012:1580)
* [ubc/mm] A new strict page cache isolation feature (PSBM-16955, see 
openvz.org/Page_cache_isolation)
* [mm] per-bc pagecache should be shrinked proportionally now (PSBM-15799)
* [mm] debug trace events has been added into shrink_zone and shrink_gang
* [dcache] introduce per-bc dcache lru lists with real time shrink. 
Underlying dcache can be immediately shrunk if sysctl 
"ubc.dcache_no_vzfs_cache" is set (PSBM-16072)
* [vSwap] virtual vSwap feature has been introduced => now vSwap does 
not require free physical swap on the HN (PSBM-16764)
* [pagecache] enchanted version of memory scheduler: shadow gangs, 
reclaimer takes timestamps into the consideration, etc. (PSBM-15796)
* [ubc/dcache] fix endless oom postponing in dcache reclaimer 
(PSBM-17067, PSBM-17069)
* [mm] the number of vmscan prios has been increased from 25 to 42. 
vmscan iterator has been fixed. (PSBM-15799)
* [cpt] kernel panic has been fixed due to DEAD task restoration attempt 
(PCLIN-30483, PSBM-17107)
* [mm] deadlock in kswapd near oom condition has been fixed (PSBM-17100)
* [fuse] a missed fuse_file_put() has been added
* [mm] a panic while using huge tables has been fixed (PSBM-17315)
* [media/rc] a possible kernel panic on "rc-core" module unload has been 
fixed
* [fs/epoll] spurious lockdep warnings has been eliminated
* [mm/hugepages] hugepages are now accounted inside a CT (to kmemsize 
and lockedpages) (PSBM-17327)
* [ubc] swap failcounters should not be incremented in case of non fatal 
shortage
* [mm] a new formula has been implemented for pagecache reclaimer 
(PSBM-15799)
* [ubc] fix BUG due to sleep-in-atomic in set_gang_limits()
* [mm] limit the CT memory portion by its commitment. In simple words: 
if you have single 256mb container on 1gb machine it's portion should be 
256m, not 1gb.
* [mm] set commitment to 0 for unlimited containers. For vmscan 
priorities that means that their effective memory portion is exactly 
equal to memory usage and give no bonuses for eliminating penalties for 
aged pages.
* [cpt] make vzreboot be able to work with new vSwap implementation 
(without necessity of physical swap) (PSBM-17124)
* [ploop] fix lockdep complains about bd_full acquiring (PSBM-13653)
* [mm] do not force scanning top priority lru vectors, this could result 
into forced push anon memory to swap (PSBM-17443)
* [mm] struct gang size decreased to 16Kb, this should eliminate often 
memory allocation failures on CT start (PSBM-17433)
* [fs] lockdep locking classes for virtualized filesystem types has been 
fixed
* [fs] CT O_DIRECT and fsync settings checks have been corrected 
(PSBM-17157)
* [pfcache] fix using uninitialized data on pfcache mounting


Download
========
http://wiki.openvz.org/Download/kernel/rhel6-testing/042stab072.2


Bug reporting
=============
Use http://bugzilla.openvz.org/  to report any bugs found.


Other sources of info on updates
================================
See http://wiki.openvz.org/News  to view all the news (including updates)
online. There you can also find RSS/Atom feed links.


Best regards,
   OpenVZ team