From e84c2091a45228b62867ec0565898ef5404706a2 Mon Sep 17 00:00:00 2001 From: Max Gurtovoy Date: Tue, 2 Apr 2019 14:52:47 +0300 Subject: nvmet: never fail double namespace enablement In case we create N namespaces while N < NVMET_MAX_NAMESPACES, we can perform "echo 1 > /enable" as much as we want. In case N == NVMET_MAX_NAMESPACES we fail. Make sure we have the same flow for any N. Signed-off-by: Max Gurtovoy Reviewed-by: Johannes Thumshirn Signed-off-by: Christoph Hellwig --- drivers/nvme/target/core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/nvme/target') diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index b3e765a95af8..4dc388a2ecb0 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -494,13 +494,14 @@ int nvmet_ns_enable(struct nvmet_ns *ns) int ret; mutex_lock(&subsys->lock); - ret = -EMFILE; - if (subsys->nr_namespaces == NVMET_MAX_NAMESPACES) - goto out_unlock; ret = 0; if (ns->enabled) goto out_unlock; + ret = -EMFILE; + if (subsys->nr_namespaces == NVMET_MAX_NAMESPACES) + goto out_unlock; + ret = nvmet_bdev_ns_enable(ns); if (ret == -ENOTBLK) ret = nvmet_file_ns_enable(ns); -- cgit v1.2.3