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authorGuoqing Jiang <gqjiang@suse.com>2017-04-06 09:12:18 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-08 11:49:49 +0200
commitca240c0e0f3fb1562f676be199b737f8c2b54953 (patch)
parenta8642e3075fb6d05025e8df2f26750f96555e6c9 (diff)
md/raid10: reset the 'first' at the end of loop
commit 6f287ca6046edd34ed83aafb7f9033c9c2e809e2 upstream. We need to set "first = 0' at the end of rdev_for_each loop, so we can get the array's min_offset_diff correctly otherwise min_offset_diff just means the last rdev's offset diff. [only the first chunk, due to b506335e5d2b ("md/raid10: skip spare disk as 'first' disk") being already applied - gregkh] Suggested-by: NeilBrown <neilb@suse.com> Signed-off-by: Guoqing Jiang <gqjiang@suse.com> Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com> Cc: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 432c17fa636e..5952db64b4e3 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3717,6 +3717,7 @@ static int run(struct mddev *mddev)
if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
discard_supported = true;
+ first = 0;
if (mddev->queue) {