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md: improve partition detection in md array

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md currently uses ->media_changed to make sure rescan_partitions
is call on md array after they are assembled.

However that doesn't happen until the array is opened, which is later
than some people would like.

So use blkdev_ioctl to do the rescan immediately that the
array has been assembled.

This means we can remove all the ->change infrastructure as it was only used
to trigger a partition rescan.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
NeilBrown 2007-05-09 02:35:39 -07:00 • committed by Linus Torvalds
parent 08a02ecd28
commit 5b479c91da
4 changed files with 8 additions and 22 deletions
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1
include/linux/raid/md_k.h
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@ -201,7 +201,6 @@ struct mddev_s
struct mutex reconfig_mutex;
atomic_t active;
int changed; /* true if we might need to reread partition info */
int degraded; /* whether md should consider
* adding a spare
*/