dm: fix REQ_OP_ZONE_REPORT bio handling
authorDamien Le Moal <damien.lemoal@wdc.com>
Mon, 8 May 2017 23:40:47 +0000 (16:40 -0700)
committerMike Snitzer <snitzer@redhat.com>
Mon, 19 Jun 2017 15:03:51 +0000 (11:03 -0400)
commit264c869d44dcff17e3b108dbb2fbea24bed08538
tree512687ea85a4a36cf6be6a59ebfee5ad0b3b59e2
parenta4aa5e56e5189b88a2891cdcc350dac618810354
dm: fix REQ_OP_ZONE_REPORT bio handling

A REQ_OP_ZONE_REPORT bio is not a medium access command.  Its number of
sectors indicates the maximum size allowed for the report reply size and
not an amount of sectors accessed from the device.  REQ_OP_ZONE_REPORT
bios should thus not be split depending on the target device maximum I/O
length but passed as-is.  Note that it is the responsability of the
target to remap and format the report reply.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm.c