Bug 185450 - kernel dm: log bitset fix BE find_next_zero_bit
kernel dm: log bitset fix BE find_next_zero_bit
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
: ---
: ---
Assigned To: Alasdair Kergon
Brian Brock
Depends On:
Blocks: 181409
  Show dependency treegraph
Reported: 2006-03-14 16:35 EST by Alasdair Kergon
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version: RHSA-2006-0575
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2006-08-10 18:41:54 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2006:0575 normal SHIPPED_LIVE Important: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4 2006-08-10 00:00:00 EDT

  None (edit)
Description Alasdair Kergon 2006-03-14 16:35:54 EST
From: Stefan Bader <shbader@de.ibm.com>
This is an addition to the endian fixes that introduce ext2_* versions
of the set and clear bit functions. The find_next_zero_bit also has to
be the ext2 one. Otherwise the mirror target tries to recover non-existent
regions beyond the end of device.
Signed-Off-By: Stefan Bader <shbader@de.ibm.com>
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
Index: linux-2.6.16-rc1/drivers/md/dm-log.c
--- linux-2.6.16-rc1.orig/drivers/md/dm-log.c   2006-01-23 21:22:19.000000000 +0000
+++ linux-2.6.16-rc1/drivers/md/dm-log.c        2006-02-01 20:54:50.000000000 +0000
@@ -545,7 +545,8 @@ static int core_get_resync_work(struct d
                return 0;
        do {
-               *region = find_next_zero_bit((unsigned long *) lc->sync_bits,
+               *region = ext2_find_next_zero_bit(
+                                            (unsigned long *) lc->sync_bits,
                lc->sync_search = *region + 1;
Comment 1 Jason Baron 2006-03-28 12:54:10 EST
committed in stream u4 build 34.9. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/
Comment 5 Red Hat Bugzilla 2006-08-10 18:41:55 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 the 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.


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