md: fix clearing of 'blocked' flag in the presence of bad blocks.

When the 'blocked' flag on a device is cleared while there are
unacknowledged bad blocks we must fail the device.  This is needed for
backwards compatability of the interface.

The code currently uses the wrong test for "unacknowledged bad blocks
exist".  Change it to the right test.

Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/drivers/md/md.c b/drivers/md/md.c
index aca6117112645c3e8bb47d1aea166e34480c4d11..3742ce8b0acf6b70cf119bc412654c94ec0aa165 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2592,7 +2592,7 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
                err = 0;
        } else if (cmd_match(buf, "-blocked")) {
                if (!test_bit(Faulty, &rdev->flags) &&
-                   test_bit(BlockedBadBlocks, &rdev->flags)) {
+                   rdev->badblocks.unacked_exist) {
                        /* metadata handler doesn't understand badblocks,
                         * so we need to fail the device
                         */