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raid0->raid10 takeover- allocate memory for added disks 

Allocate memory will be used in process_update.
For raid0->raid10 takeover operation number of disks doubles
so we should allocate memory for additional disks
and one imsm_dev structure with extended order table.

Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Krzysztof Wojcik 2011-01-25 17:44:10 +11:00 committed by NeilBrown
parent 0529c688e8
commit abedf5fc46
1 changed files with 47 additions and 0 deletions
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47
super-intel.c
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@ -6189,6 +6189,53 @@ static void imsm_prepare_update(struct supertype *st,
size_t len = 0;
switch (type) {
case update_takeover: {
struct imsm_update_takeover *u = (void *)update->buf;
if (u->direction == R0_TO_R10) {
void **tail = (void **)&update->space_list;
struct imsm_dev *dev = get_imsm_dev(super, u->subarray);
struct imsm_map *map = get_imsm_map(dev, 0);
int num_members = map->num_members;
void *space;
int size, i;
int err = 0;
/* allocate memory for added disks */
for (i = 0; i < num_members; i++) {
size = sizeof(struct dl);
space = malloc(size);
if (!space) {
err++;
break;
}
*tail = space;
tail = space;
*tail = NULL;
}
/* allocate memory for new device */
size = sizeof_imsm_dev(super->devlist->dev, 0) +
(num_members * sizeof(__u32));
space = malloc(size);
if (!space)
err++;
else {
*tail = space;
tail = space;
*tail = NULL;
}
if (!err) {
len = disks_to_mpb_size(num_members * 2);
} else {
/* if allocation didn't success, free buffer */
while (update->space_list) {
void **sp = update->space_list;
update->space_list = *sp;
free(sp);
}
}
}
break;
}
case update_reshape_container_disks: {
/* Every raid device in the container is about to
* gain some more devices, and we will enter a