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imsm: trim some memory wastage 

drop the previously loaded data as load_imsm_super_all loops through the
disks.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2008-07-25 17:45:13 -07:00
parent 949c47a0fa
commit 9ca2c81c0f
1 changed files with 16 additions and 4 deletions
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20
super-intel.c
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@ -870,6 +870,8 @@ static int parse_raid_devices(struct intel_super *super)
return 0;
}
static void __free_imsm(struct intel_super *super);
/* load_imsm_mpb - read matrix metadata
* allocates super->mpb to be freed by free_super
*/
@ -916,6 +918,7 @@ static int load_imsm_mpb(int fd, struct intel_super *super, char *devname)
return 2;
}
__free_imsm(super);
super->len = __le32_to_cpu(anchor->mpb_size);
super->len = ROUND_UP(anchor->mpb_size, 512);
if (posix_memalign(&super->buf, 512, super->len) != 0) {
@ -991,19 +994,28 @@ static void free_imsm_disks(struct intel_super *super)
}
}
static void free_imsm(struct intel_super *super)
/* free all the pieces hanging off of a super pointer */
static void __free_imsm(struct intel_super *super)
{
int i;
if (super->buf)
if (super->buf) {
free(super->buf);
super->buf = NULL;
}
free_imsm_disks(super);
for (i = 0; i < IMSM_MAX_RAID_DEVS; i++)
if (super->dev_tbl[i])
if (super->dev_tbl[i]) {
free(super->dev_tbl[i]);
free(super);
super->dev_tbl[i] = NULL;
}
}
static void free_imsm(struct intel_super *super)
{
__free_imsm(super);
free(super);
}
static void free_super_imsm(struct supertype *st)
{