Bug 218476

Summary: blktap needs zap_page_range() exported
Product: Red Hat Enterprise Linux 5 Reporter: Stephen Tweedie <sct>
Component: kernel-xenAssignee: Stephen Tweedie <sct>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 5.0CC: xen-maint
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 5.0.0 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-01-26 21:18:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 218048    

Description Stephen Tweedie 2006-12-05 17:11:04 UTC 
Description of problem:
The blktap backend needs zap_page_range() exported: it uses this to clear its
guest mappings during driver shutdown.

Current RHEL-5 has 
  EXPORT_SYMBOL(zap_page_range)
as an implicit part of the PV-FB patch.  But the new upstream PV-FB does not
have that, and blktap still needs it.

So updating the blktap patch will break PV-FB.

So we need to move that chunk from the PV-FB patch to the blktap-fixes patch in
order to preserve it.

Version-Release number of selected component (if applicable):
kernel-2.6.18-1.2817.el5
Comment 3 Jay Turner 2006-12-06 22:54:01 UTC 
QE ack for RHEL5.
Comment 4 Don Zickus 2006-12-18 02:48:50 UTC 
in 2.6.18-1.2910.el5
Comment 5 Don Zickus 2006-12-18 17:45:48 UTC 
ignore previous useless comment
in 2.6.18-1.2910.el5
Comment 6 Jay Turner 2007-01-26 21:18:49 UTC 
2.6.18-7.el5 included in 20070125.0.