blk-mq: skip CPU offline notify on unmapped hctx #440
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Upstream branch: d26143b |
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Upstream branch: d26143b |
If an hctx has no software ctx mapped, blk_mq_map_swqueue() never allocates tags and leaves hctx->tags NULL. The CPU hotplug offline notifier can still run for that hctx, return early since hctx cannot hold any requests. Signed-off-by: Cong Zhang <cong.zhang@oss.qualcomm.com> Reviewed-by: Ming Lei <ming.lei@redhat.com>
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Pull request for series with
subject: blk-mq: skip CPU offline notify on unmapped hctx
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1037295