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linux/drivers/s390/block
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Jan Höppner 709192d531 s390/dasd: Fix zero write for FBA devices 
A discard request that writes zeros using the global kernel internal
ZERO_PAGE will fail for machines with more than 2GB of memory due to the
location of the ZERO_PAGE.

Fix this by using a driver owned global zero page allocated with GFP_DMA
flag set.

Fixes: 28b841b3a7 ("s390/dasd: Add discard support for FBA devices")
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Cc: <stable@vger.kernel.org> # 4.14+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-14 19:40:21 -06:00
..
dasd_3990_erp.c s390/dasd: Fix comment spelling 2020-03-17 20:50:19 +01:00
dasd_alias.c s390/dasd: fix endless loop after read unit address configuration 2019-08-01 20:46:14 -06:00
dasd_devmap.c s390/dasd: Recognise data for ESE volumes 2019-07-11 20:39:53 +02:00
dasd_diag.c s390/dasd: Use struct_size() helper 2020-07-15 08:47:11 -06:00
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 data corruption for thin provisioned devices 2020-03-12 07:24:52 -06:00
dasd_eckd.h s390: Replace zero-length array with flexible-array member 2020-02-27 16:02:21 +01:00
dasd_eer.c s390/dasd: Handle out-of-space constraint 2019-07-11 20:39:54 +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: Fix zero write for FBA devices 2020-09-14 19:40:21 -06:00
dasd_fba.h s390/dasd: fix typo in copyright statement 2019-12-20 11:52:01 -07:00
dasd_genhd.c dasd: use blk_drop_partitions instead of badly reimplementing it 2020-04-20 11:32:59 -06:00
dasd_int.h s390/dasd: fix data corruption for thin provisioned devices 2020-03-12 07:24:52 -06:00
dasd_ioctl.c s390/dasd: remove ioctl_by_bdev calls 2020-05-21 08:22:20 -06:00
dasd_proc.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
dasd.c blk-mq: move failure injection out of blk_mq_complete_request 2020-06-24 09:15:57 -06:00
dcssblk.c dcssblk: don't set bd_block_size in ->open 2020-07-01 08:08:15 -06:00
Kconfig s390/dasd: remove IOSCHED_DEADLINE from DASD Kconfig 2020-04-17 08:05:27 -06:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scm_blk.c blk-mq: move failure injection out of blk_mq_complete_request 2020-06-24 09:15:57 -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: move ->make_request_fn to struct block_device_operations 2020-07-01 07:27:24 -06:00