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dm: add presuspend_undo hook to target_type

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The DM thin-pool target now must undo the changes performed during
pool_presuspend() so introduce presuspend_undo hook in target_type.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
This commit is contained in:
Mike Snitzer
2014-10-28 20:13:31 -04:00
parent 4d341d8216
commit d67ee213fa
5 changed files with 42 additions and 11 deletions
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4
include/uapi/linux/dm-ioctl.h
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@@ -267,9 +267,9 @@ enum {
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
#define DM_VERSION_MINOR 28
#define DM_VERSION_MINOR 29
#define DM_VERSION_PATCHLEVEL 0
#define DM_VERSION_EXTRA "-ioctl (2014-09-17)"
#define DM_VERSION_EXTRA "-ioctl (2014-10-28)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */