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MD: support initial bitmap creation in-kernel

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Add bitmap support to the device-mapper specific metadata area.

This patch allows the creation of the bitmap metadata area upon
initial array creation via device-mapper.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Jonathan Brassow
2011-06-08 17:59:30 -05:00
committed by NeilBrown
parent 076f968b37
commit 9c81075f43
2 changed files with 89 additions and 5 deletions
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drivers/md/md.h
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@@ -124,6 +124,7 @@ struct mddev_s
#define MD_CHANGE_DEVS 0 /* Some device status has changed */
#define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */
#define MD_CHANGE_PENDING 2 /* switch from 'clean' to 'active' in progress */
#define MD_ARRAY_FIRST_USE 3 /* First use of array, needs initialization */
int suspended;
atomic_t active_io;