dm table: add always writeable feature

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Add a target feature flag DM_TARGET_ALWAYS_WRITEABLE to indicate that a target
does not support read-only mode.

The initial implementation of the thin provisioning target uses this.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>

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Alasdair G Kergon 2011-10-31 20:19:02 +00:00

parent 3791e2fc0e

commit cc6cbe141a

2 changed files with 13 additions and 0 deletions

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6

drivers/md/dm-table.c

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7

include/linux/device-mapper.h

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