Bug 242068
| Summary: | device-mapper mirror: Blockable function [clear_region] called inside spinlock | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 4 | Reporter: | Jonathan Earl Brassow <jbrassow> |
| Component: | kernel | Assignee: | Jonathan Earl Brassow <jbrassow> |
| Status: | CLOSED ERRATA | QA Contact: | Martin Jenner <mjenner> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 4.5 | CC: | mbroz |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHBA-2007-0791 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2007-11-15 16:27:59 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: | 242069 | ||
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. assinged -> post committed in stream U6 build 55.15. A test kernel with this patch is available from http://people.redhat.com/~jbaron/rhel4/ 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. http://rhn.redhat.com/errata/RHBA-2007-0791.html |
From drivers/md/dm-log.h: /* * Mark an area as clean or dirty. These functions may * block, though for performance reasons blocking should * be extremely rare (eg, allocating another chunk of * memory for some reason). */ void (*mark_region)(struct dirty_log *log, region_t region); void (*clear_region)(struct dirty_log *log, region_t region); These function rarely block, but they could. Would be a good idea to move the clear_region call in rh_update_states outside the spin lock.