https://github.com/torvalds/linux
Revision a75e9ccabd925d16954739bd977c54695c9310d0 authored by Srinivas Eeda on 31 January 2012, 05:51:22 UTC, committed by Joel Becker on 04 July 2012, 06:27:15 UTC
When ocfs2dc thread holds dc_task_lock spinlock and receives soft IRQ it deadlock itself trying to get same spinlock in ocfs2_wake_downconvert_thread. Below is the stack snippet. The patch disables interrupts when acquiring dc_task_lock spinlock. ocfs2_wake_downconvert_thread ocfs2_rw_unlock ocfs2_dio_end_io dio_complete ..... bio_endio req_bio_endio .... scsi_io_completion blk_done_softirq __do_softirq do_softirq irq_exit do_IRQ ocfs2_downconvert_thread [kthread] Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Joel Becker <jlbec@evilplan.org>
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Tip revision: a75e9ccabd925d16954739bd977c54695c9310d0 authored by Srinivas Eeda on 31 January 2012, 05:51:22 UTC
ocfs2: use spinlock irqsave for downconvert lock.patch
ocfs2: use spinlock irqsave for downconvert lock.patch
Tip revision: a75e9cc
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 1014 bytes |
| .mailmap | -rw-r--r-- | 4.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 92.7 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 208.2 KB |
| Makefile | -rw-r--r-- | 46.0 KB |
| README | -rw-r--r-- | 17.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.3 KB |
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