nvme: make sure ns head inherits underlying device limits

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[ Upstream commit 8f676b8508 ]

Whenever we update ns_head info, we need to make sure it is still
compatible with all underlying backing devices because although nvme
multipath doesn't have any explicit use of these limits, other devices
can still be stacked on top of it which may rely on the underlying limits.
Start with unlimited stacking limits, and every info update iterate over
siblings and adjust queue limits.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Sagi Grimberg 2018-11-02 11:22:13 -07:00 • committed by Greg Kroah-Hartman

parent 05e25696bd

commit fa4712942d

2 changed files with 4 additions and 1 deletions

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4

drivers/nvme/host/core.c

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1

drivers/nvme/host/multipath.c

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