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authorNeilBrown <neilb@suse.de>2006-10-28 10:38:30 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-28 11:30:51 -0700
commit01ab5662f573fe3a6bcefa200f15ab3069cec8a3 (patch)
tree6a3280e26f6f65673394dc8ab3b39897d1c11c18 /drivers/md
parent2b6e845986347ef86729e8651908af3e8a8441f5 (diff)
downloadop-kernel-dev-01ab5662f573fe3a6bcefa200f15ab3069cec8a3.zip
op-kernel-dev-01ab5662f573fe3a6bcefa200f15ab3069cec8a3.tar.gz
[PATCH] md: simplify checking of available size when resizing an array
When "mdadm --grow --size=xxx" is used to resize an array (use more or less of each device), we check the new siza against the available space in each device. We already have that number recorded in rdev->size, so calculating it is pointless (and wrong in one obscure case). 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/md')
-rw-r--r--drivers/md/md.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index c40ce9f..50ab4a9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4045,11 +4045,8 @@ static int update_size(mddev_t *mddev, unsigned long size)
return -EBUSY;
ITERATE_RDEV(mddev,rdev,tmp) {
sector_t avail;
- if (rdev->sb_offset > rdev->data_offset)
- avail = (rdev->sb_offset*2) - rdev->data_offset;
- else
- avail = get_capacity(rdev->bdev->bd_disk)
- - rdev->data_offset;
+ avail = rdev->size * 2;
+
if (fit && (size == 0 || size > avail/2))
size = avail/2;
if (avail < ((sector_t)size << 1))
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