From: Rakesh Pandit <rakesh@tuxera.com>
Date: Tue, 27 Jun 2017 14:55:33 +0300
Subject: [PATCH] lightnvm: if LUNs are already allocated fix return
Git-commit: 12e9a6d62236dacb87a6b2dd84dd9c29bb5be1de
Patch-mainline: v4.13-rc1
References: bsc#1104967,FATE#325924,bsc#1085535
While creating new device with NVM_DEV_CREATE if LUNs are already
allocated ioctl would return -ENOMEM which is wrong. This patch
propagates -EBUSY from nvm_reserve_luns which is correct response.
Fixes: ade69e243 ("lightnvm: merge gennvm with core")
Reviewed-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Rakesh Pandit <rakesh@tuxera.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/lightnvm/core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index b8f82f5c6c0d..ddae430b6eae 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -252,8 +252,9 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
}
mutex_unlock(&dev->mlock);
- if (nvm_reserve_luns(dev, s->lun_begin, s->lun_end))
- return -ENOMEM;
+ ret = nvm_reserve_luns(dev, s->lun_begin, s->lun_end);
+ if (ret)
+ return ret;
t = kmalloc(sizeof(struct nvm_target), GFP_KERNEL);
if (!t) {
--
2.12.3