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authorChristoph Hellwig <hch@lst.de>2015-10-15 15:10:51 +0300
committerMike Snitzer <snitzer@redhat.com>2015-11-01 02:05:59 +0300
commit71cdb6978a80f9f6c51bef0622388c1414c2fe32 (patch)
tree0cb8dd73c2cf471f27e7e176d6d04b2d9ffcbd02 /drivers/md/dm-io.c
parente56f81e0b01ef4e45292d8c1e19edd4d09724e14 (diff)
downloadlinux-71cdb6978a80f9f6c51bef0622388c1414c2fe32.tar.xz
dm: add support for passing through persistent reservations
This adds support to pass through persistent reservation requests similar to the existing ioctl handling, and with the same limitations, e.g. devices may only have a single target attached. This is mostly intended for multipathing. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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