From 75ba82c65d55099a0af5aba1075f8bdcaf566b56 Mon Sep 17 00:00:00 2001 From: Neil Brown Date: Fri, 15 Dec 2006 01:48:58 +0100 Subject: [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 Signed-off-by: Neil Brown Signed-off-by: Adrian Bunk --- 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 78cca0c4e959..2fd2cd4470a6 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3437,6 +3437,7 @@ 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; @@ -3454,7 +3455,6 @@ 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 -- 2.39.5