OpenCloudOS-Kernel/drivers/s390/block
Peter Oberparleiter 2cc9637ce8 s390/dasd: Fix capacity calculation for large volumes
The DASD driver incorrectly limits the maximum number of blocks of ECKD
DASD volumes to 32 bit numbers. Volumes with a capacity greater than
2^32-1 blocks are incorrectly recognized as smaller volumes.

This results in the following volume capacity limits depending on the
formatted block size:

  BLKSIZE  MAX_GB   MAX_CYL
      512    2047   5843492
     1024    4095   8676701
     2048    8191  13634816
     4096   16383  23860929

The same problem occurs when a volume with more than 17895697 cylinders
is accessed in raw-track-access mode.

Fix this problem by adding an explicit type cast when calculating the
maximum number of blocks.

Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-03-29 07:23:44 +01:00
..
Kconfig dax: introduce CONFIG_DAX_DRIVER 2018-04-03 05:41:19 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dasd.c s390/dasd: fix read device characteristic with CONFIG_VMAP_STACK=y 2019-03-01 16:23:56 +01:00
dasd_3990_erp.c s390/dasd: configurable IFCC handling 2018-02-22 15:31:23 +01:00
dasd_alias.c s390/dasd: fix gcc 8 stringop-truncation warning 2018-07-02 11:24:53 +02:00
dasd_devmap.c s390/dasd,zfcp: fix gcc 8 stringop-truncation warnings 2018-07-02 11:24:52 +02:00
dasd_diag.c s390/dasd: move dasd_ccw_req to per request data 2018-06-12 15:14:19 +02:00
dasd_diag.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dasd_eckd.c s390/dasd: Fix capacity calculation for large volumes 2019-03-29 07:23:44 +01:00
dasd_eckd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dasd_eer.c s390/dasd,zfcp: fix gcc 8 stringop-truncation warnings 2018-07-02 11:24:52 +02:00
dasd_erp.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dasd_fba.c s390/dasd: move dasd_ccw_req to per request data 2018-06-12 15:14:19 +02:00
dasd_fba.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dasd_genhd.c block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
dasd_int.h s390/dasd: reduce the default queue depth and nr of hardware queues 2018-07-02 11:22:41 +02:00
dasd_ioctl.c dasd: remove dead code 2018-11-07 13:42:32 -07:00
dasd_proc.c s390/drivers: fix proc/debugfs file permissions 2018-12-13 10:42:24 +01:00
dcssblk.c block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
scm_blk.c block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
scm_blk.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
scm_drv.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xpram.c block: Use blk_queue_flag_*() in drivers instead of queue_flag_*() 2018-03-08 14:13:48 -07:00