4.20-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 78a61cd42a64f3587862b372a79e1d6aaf131fd7 ]
Bit 6 in the ANACAP field is used to indicate that the ANA group ID doesn't change while the namespace is attached to the controller. There is an optimisation in the code to only allocate space for the ANA group header, as the namespace list won't change and hence would not need to be refreshed. However, this optimisation was never carried over to the actual workflow, which always assumes that the buffer is large enough to hold the ANA header _and_ the namespace list. So drop this optimisation and always allocate enough space.
Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Hannes Reinecke hare@suse.com Signed-off-by: Sagi Grimberg sagi@grimberg.me Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/multipath.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 2b1d1f066efaf..6ea7c266a9cad 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -561,8 +561,7 @@ int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id) timer_setup(&ctrl->anatt_timer, nvme_anatt_timeout, 0); ctrl->ana_log_size = sizeof(struct nvme_ana_rsp_hdr) + ctrl->nanagrpid * sizeof(struct nvme_ana_group_desc); - if (!(ctrl->anacap & (1 << 6))) - ctrl->ana_log_size += ctrl->max_namespaces * sizeof(__le32); + ctrl->ana_log_size += ctrl->max_namespaces * sizeof(__le32);
if (ctrl->ana_log_size > ctrl->max_hw_sectors << SECTOR_SHIFT) { dev_err(ctrl->device,