From 8ddeeae51f2f197b4fafcba117ee8191b49d843e Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Mon, 27 Mar 2006 01:18:18 -0800
Subject: [PATCH] [PATCH] md: Fix md grow/size code to correctly find the
 maximum available space

An md array can be asked to change the amount of each device that it is using,
and in particular can be asked to use the maximum available space.  This
currently only works if the first device is not larger than the rest.  As
'size' gets changed and so 'fit' becomes wrong.  So check if a 'fit' is
required early and don't corrupt it.

Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 drivers/md/md.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 92fd0104fa04..147efcb1e8ca 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3575,6 +3575,7 @@ static int update_size(mddev_t *mddev, unsigned long size)
 	mdk_rdev_t * rdev;
 	int rv;
 	struct list_head *tmp;
+	int fit = (size == 0);
 
 	if (mddev->pers->resize == NULL)
 		return -EINVAL;
@@ -3592,7 +3593,6 @@ static int update_size(mddev_t *mddev, unsigned long size)
 		return -EBUSY;
 	ITERATE_RDEV(mddev,rdev,tmp) {
 		sector_t avail;
-		int fit = (size == 0);
 		if (rdev->sb_offset > rdev->data_offset)
 			avail = (rdev->sb_offset*2) - rdev->data_offset;
 		else
-- 
2.30.9