[SCSI] Stop accepting SCSI requests before removing a device

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Avoid that the code for requeueing SCSI requests triggers a
crash by making sure that that code isn't scheduled anymore
after a device has been removed.

Also, source code inspection of __scsi_remove_device() revealed
a race condition in this function: no new SCSI requests must be
accepted for a SCSI device after device removal started.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

...

This commit is contained in:

Bart Van Assche 2012-06-29 15:36:07 +00:00 • committed by James Bottomley

parent 84feb1664e

commit b485462aca

2 changed files with 13 additions and 5 deletions

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7

drivers/scsi/scsi_lib.c

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11

drivers/scsi/scsi_sysfs.c

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