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authorPeter Jones <pjones@redhat.com>2011-01-13 19:59:47 +0000
committerAlasdair G Kergon <agk@redhat.com>2011-01-13 19:59:47 +0000
commit84c89557a302e18414a011cc52b1abd034860743 (patch)
tree6b6ca2c400b7a6e09da46b051c177317316f0b93 /fs/bio-integrity.c
parentd9bf0b508ddfe19883b982b29a03c02ccbf53806 (diff)
dm ioctl: allow rename to fill empty uuid
Allow the uuid of a mapped device to be set after device creation. Previously the uuid (which is optional) could only be set by DM_DEV_CREATE. If no uuid was supplied it could not be set later. Sometimes it's necessary to create the device before the uuid is known, and in such cases the uuid must be filled in after the creation. This patch extends DM_DEV_RENAME to accept a uuid accompanied by a new flag DM_UUID_FLAG. This can only be done once and if no uuid was previously supplied. It cannot be used to change an existing uuid. DM_VERSION_MINOR is also bumped to 19 to indicate this interface extension is available. Signed-off-by: Peter Jones <pjones@redhat.com> Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'fs/bio-integrity.c')
0 files changed, 0 insertions, 0 deletions