Revert "md: improve partition detection in md array"
This reverts commit 5b479c91da90eef605f851508744bfe8269591a0.
Quoth Neil Brown:
"It causes an oops when auto-detecting raid arrays, and it doesn't
seem easy to fix.
The array may not be 'open' when do_md_run is called, so
bdev->bd_disk might be NULL, so bd_set_size can oops.
This whole approach of opening an md device before it has been
assembled just seems to get more and more painful. I think I'm going
to have to come up with something clever to provide both backward
comparability with usage expectation, and sane integration into the
rest of the kernel."
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index a121f36..de72c49 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -201,6 +201,7 @@
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
*/