https://github.com/torvalds/linux
Revision 54b0d127696aba2ef1ec5430301c968ab539fa0d authored by Neil Brown on 07 January 2009, 07:55:39 UTC, committed by Jens Axboe on 09 January 2009, 20:46:13 UTC
Neil writes: Hi Jens, I've found a little bug for you. It was introduced by a6f23657d3072bde6844055bbc2290e497f33fbc block: add one-hit cache for disk partition lookup and has the effect of killing my machine whenever I try to assemble an md array :-( One of the devices in the array has partitions, and mdadm always deletes partitions before putting a whole-device in an array (as it can cause confusion). The next IO to that device locks the machine. I don't really understand exactly why it locks up, but it happens in disk_map_sector_rcu(). This patch fixes it. Which is due to a missing clear of the (now) stale partition lookup data. So clear that when we delete a partition. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
1 parent 2150edc
Tip revision: 54b0d127696aba2ef1ec5430301c968ab539fa0d authored by Neil Brown on 07 January 2009, 07:55:39 UTC
block: fix bug in ptbl lookup cache
block: fix bug in ptbl lookup cache
Tip revision: 54b0d12
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Kconfig | -rw-r--r-- | 1.8 KB |
Makefile | -rw-r--r-- | 3.1 KB |
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