[Announce] Kernel RHEL6 042stab068.8 (stable)

Kir Kolyshkin kir at openvz.org
Mon Dec 17 14:21:50 EST 2012


OpenVZ project has released a new RHEL6 based kernel.
Read below for more information. Everyone using this
kernel branch is advised to upgrade.


Changes
=======
Since 042stab065.3:
* [mm] possible memory corruption has been fixed by preventing 
reclaiming of pages in the writeback (PSBM-16442)
* [ploop] possible deadlock on destroying map has been fixed (PSBM-16627)
* [ubc/mm] A new strict page cache isolation feature (PSBM-16955), see 
http://wiki.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] enhanced version of memory scheduler: shadow gangs, 
reclaimer takes timestamps into the consideration, etc. (PSBM-15796)
* vmscan priority is calculated for all LRU vectors according to its 
memory usage/limit and age of LRU lists.
* [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)
* [devpts] handle dentry allocation failure properly in devpts_pty_new() 
(#1758)


Download
========
http://wiki.openvz.org/Download/kernel/rhel6/042stab068.8


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 feed links.


Best regards,
   OpenVZ team.


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