Stefan Haberland 9487cfd343 s390/dasd: fix handling of internal requests ... Internal DASD device driver I/O such as query host access count or path verification is started using the _sleep_on() function. To mark a request as started or ended the callback_data is set to either DASD_SLEEPON_START_TAG or DASD_SLEEPON_END_TAG. In cases where the request has to be stopped unconditionally the status is set to DASD_SLEEPON_END_TAG as well which leads to immediate clearing of the request. But the request might still be on a device request queue for normal operation which might lead to a panic because of a BUG() statement in __dasd_device_process_final_queue() or a list corruption of the device request queue. Fix by removing the setting of DASD_SLEEPON_END_TAG in the dasd_cancel_req() and dasd_generic_requeue_all_requests() functions and ensure that the request is not deleted in the requeue function. Trigger the device tasklet in the requeue function and let the normal processing cleanup the request. Signed-off-by: Stefan Haberland <sth@linux.vnet.ibm.com> Reviewed-by: Jan Hoeppner <hoeppner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2018-02-19 08:00:06 +01:00
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dasd_3990_erp.c
dasd_alias.c
dasd_devmap.c
dasd_diag.c
dasd_diag.h
dasd_eckd.c
dasd_eckd.h
dasd_eer.c
dasd_erp.c
dasd_fba.c
dasd_fba.h
dasd_genhd.c
dasd_int.h
dasd_ioctl.c
dasd_proc.c
dasd.c	s390/dasd: fix handling of internal requests	2018-02-19 08:00:06 +01:00
dcssblk.c
Kconfig
Makefile
scm_blk.c
scm_blk.h
scm_drv.c
xpram.c