nvme: use kref_get_unless_zero in nvme_find_get_ns

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[ Upstream commit 2dd4122854 ]

For kref_get_unless_zero to protect against lookup vs free races we need
to use it in all places where we aren't guaranteed to already hold a
reference.  There is no such guarantee in nvme_find_get_ns, so switch to
kref_get_unless_zero in this function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Christoph Hellwig 2017-10-18 13:20:01 +02:00 • committed by Greg Kroah-Hartman

parent 21cd9fe750

commit 4edcbfc565

1 changed files with 2 additions and 1 deletions

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drivers/nvme/host/core.c

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