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authorNeilBrown <neilb@suse.de>2006-03-27 01:18:18 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:45:03 -0800
commit8ddeeae51f2f197b4fafcba117ee8191b49d843e (patch)
treef18b93cd8d9122dcf9a59cc9ff63d75be146bb11 /drivers
parentf6344757a92e5466bf8c23a74ee8f972ff35cb05 (diff)
[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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/md.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 92fd0104fa0..147efcb1e8c 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