This patch fixed a bug in 2.6.18-rc3 It would be good if it can get
into -final.
Thanks,
NeilBrown
### Comments for Changeset
A recent patch that allowed linear arrays to be reconfigured on-line
allowed in a bug which results in divide by zero - not all
mddev->array_size were converted to conf->array_size.
This patch finished the conversion and fixed the bug.
The offending patch was commit 7c7546ccf6463edbeee8d9aac6de7be1cd80d08a.
Thanks to Simon Kirby <sim@xxxxxxxxxxxxx> for the bug report.
Cc: Simon Kirby <sim@xxxxxxxxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>
### Diffstat output
./drivers/md/linear.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff .prev/drivers/md/linear.c ./drivers/md/linear.c
--- .prev/drivers/md/linear.c 2006-08-01 11:06:15.000000000 +1000
+++ ./drivers/md/linear.c 2006-08-01 11:06:23.000000000 +1000
@@ -162,7 +162,7 @@ static linear_conf_t *linear_conf(mddev_
goto out;
}
- min_spacing = mddev->array_size;
+ min_spacing = conf->array_size;
sector_div(min_spacing, PAGE_SIZE/sizeof(struct dev_info *));
/* min_spacing is the minimum spacing that will fit the hash
@@ -171,7 +171,7 @@ static linear_conf_t *linear_conf(mddev_
* that is larger than min_spacing as use the size of that as
* the actual spacing
*/
- conf->hash_spacing = mddev->array_size;
+ conf->hash_spacing = conf->array_size;
for (i=0; i < cnt-1 ; i++) {
sector_t sz = 0;
int j;
@@ -228,7 +228,7 @@ static linear_conf_t *linear_conf(mddev_
curr_offset = 0;
i = 0;
for (curr_offset = 0;
- curr_offset < mddev->array_size;
+ curr_offset < conf->array_size;
curr_offset += conf->hash_spacing) {
while (i < mddev->raid_disks-1 &&
-
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