Bug 599739 – PG_error bit is never cleared, even when a fresh I/O to the page succeeds [rhel-5.5.z]

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 599739 - PG_error bit is never cleared, even when a fresh I/O to the page succeeds [rhel-5.5.z]

Summary:	PG_error bit is never cleared, even when a fresh I/O to the page succeeds [rh...

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 5
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	5.6
Hardware:	All Linux

Priority	urgent Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Jiri Pirko
QA Contact:	Red Hat Kernel QE team
Docs Contact:

URL:
Whiteboard:
Keywords:	Reopened, ZStream

Depends On:	590763
Blocks:
	Show dependency tree / graph

Reported:	2010-06-03 16:00 EDT by RHEL Product and Program Management
Modified:	2015-05-04 21:20 EDT (History)
CC List:	16 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	Input/output errors can occur due to temporary failures, such as multipath errors or losing network contact with an iSCSI server. In these cases, virtual memory attempts to retry the readpage() function on the memory page. However, the do_generic_file_read() function did not clear PG_error, which resulted in the system being unable to use the data in the page cache page, even if subsequent readpage() calls succeeded. With this update, the do_generic_file_read() function properly clears PG_error so that the page cache can be utilized in the case of input/output errors.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2010-07-01 14:28:45 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Flags:	eguan: needinfo-

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2010:0504	normal	SHIPPED_LIVE	Important: kernel security and bug fix update	2010-07-01 14:26:58 EDT

Groups: None (edit)

Description RHEL Product and Program Management 2010-06-03 16:00:45 EDT

This bug has been copied from bug #590763 and has been proposed
to be backported to 5.5 z-stream (EUS).

Comment 3 Jiri Pirko 2010-06-07 09:30:47 EDT

in 2.6.18-194.6.1.el5

Comment 10 Douglas Silas 2010-06-28 16:47:38 EDT

Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.

New Contents:
Input/output errors can occur due to temporary failures, such as multipath errors or losing network contact with an iSCSI server. In these cases, virtual memory attempts to retry the readpage() function on the memory page. However, the do_generic_file_read() function did not clear PG_error, which resulted in the system being unable to use the data in the page cache page, even if subsequent readpage() calls succeeded. With this update, the do_generic_file_read() function properly clears PG_error so that the page cache can be utilized in the case of input/output errors.

Comment 12 errata-xmlrpc 2010-07-01 14:28:45 EDT

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2010-0504.html

Note You need to log in before you can comment on or make changes to this bug.