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linux-next/drivers/s390
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Mathieu Desnoyers cf7fe690ab dcssblk: handle alloc_dax() -EOPNOTSUPP failure 
In preparation for checking whether the architecture has data cache
aliasing within alloc_dax(), modify the error handling of dcssblk
dcssblk_add_store() to handle alloc_dax() -EOPNOTSUPP failures.

Considering that s390 is not a data cache aliasing architecture,
and considering that DCSSBLK selects DAX, a return value of -EOPNOTSUPP
from alloc_dax() should make dcssblk_add_store() fail.

Link: https://lkml.kernel.org/r/20240215144633.96437-6-mathieu.desnoyers@efficios.com
Fixes: d92576f116 ("dax: does not work correctly with virtual aliasing caches")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Michael Sclafani <dm-devel@lists.linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-02-22 15:27:19 -08:00
..
block dcssblk: handle alloc_dax() -EOPNOTSUPP failure 2024-02-22 15:27:19 -08:00
char s390/mm: implement MEM_PREPARE_ONLINE/MEM_FINISH_OFFLINE notifiers 2024-02-21 16:00:02 -08:00
cio s390 updates for 6.8 merge window 2024-01-10 18:18:20 -08:00
crypto s390/vfio-ap: do not reset queue removed from host config 2024-01-17 13:53:06 +01:00
net s390/qeth: Fix potential loss of L3-IP@ in case of network issues 2024-02-08 12:10:09 +01:00
scsi scsi: zfcp: Replace strlcpy() with strscpy() 2023-12-05 21:01:52 -05:00
virtio s390/airq: remove lsi_mask from airq_struct 2023-08-30 11:03:28 +02:00
Makefile s390: remove pointless drivers-y in drivers/s390/Makefile 2019-09-16 13:21:51 +02:00