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md: Cleanup after raid45->raid0 takeover 

Problem:
After raid4->raid0 takeover operation, another takeover operation
(e.g raid0->raid10) results "kernel oops".
Root cause:
Variables 'degraded' in mddev structure is not cleared
on raid45->raid0 takeover.

This patch reset this variable.

Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Krzysztof Wojcik 2011-04-20 15:39:53 +10:00 committed by NeilBrown
parent 3b71bd9337
commit fee68723cf
1 changed files with 1 additions and 0 deletions
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drivers/md/md.c
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@ -3170,6 +3170,7 @@ level_store(mddev_t *mddev, const char *buf, size_t len)
mddev->layout = mddev->new_layout;
mddev->chunk_sectors = mddev->new_chunk_sectors;
mddev->delta_disks = 0;
mddev->degraded = 0;
if (mddev->pers->sync_request == NULL) {
/* this is now an array without redundancy, so
* it must always be in_sync