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lightnvm: set default lun range when no luns are specified
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The create target ioctl takes a lun begin and lun end parameter, which
defines the range of luns to initialize a target with. If the user does
not set the parameters, it default to only using lun 0. Instead,
defaults to use all luns in the OCSSD, as it is the usual behaviour
users want.

Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Matias Bjørling authored and Jens Axboe committed Feb 15, 2017
1 parent 0e5ffd1 commit 6732c74
Showing 1 changed file with 5 additions and 0 deletions.
5 changes: 5 additions & 0 deletions drivers/lightnvm/core.c
Original file line number Diff line number Diff line change
Expand Up @@ -1102,6 +1102,11 @@ static int __nvm_configure_create(struct nvm_ioctl_create *create)
}
s = &create->conf.s;

if (s->lun_begin == -1 && s->lun_end == -1) {
s->lun_begin = 0;
s->lun_end = dev->geo.nr_luns - 1;
}

if (s->lun_begin > s->lun_end || s->lun_end >= dev->geo.nr_luns) {
pr_err("nvm: lun out of bound (%u:%u > %u)\n",
s->lun_begin, s->lun_end, dev->geo.nr_luns - 1);
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