Grow: fix up recent changes to set_new_data_offset.
The second 'info2' wasn't being initialised. So don't use it. Reported by -O3 Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
parent
f69bb60857
commit
c0f0d8128a
44
Grow.c
44
Grow.c
|
@ -2225,21 +2225,21 @@ static int set_new_data_offset(struct mdinfo *sra, struct supertype *st,
|
|||
|
||||
for (sd = sra->devs; sd; sd = sd->next) {
|
||||
char *dn = map_dev(sd->disk.major, sd->disk.minor, 0);
|
||||
unsigned long long new_data_offset;
|
||||
|
||||
struct mdinfo info2;
|
||||
if (delta_disks < 0) {
|
||||
/* Don't need any space as array is shrinking
|
||||
* just move data_offset up by min
|
||||
*/
|
||||
if (data_offset == INVALID_SECTORS)
|
||||
info2.new_data_offset = info2.data_offset + min;
|
||||
new_data_offset = sd->data_offset + min;
|
||||
else {
|
||||
if (data_offset < info2.data_offset + min) {
|
||||
if (data_offset < sd->data_offset + min) {
|
||||
pr_err("--data-offset too small for %s\n",
|
||||
dn);
|
||||
goto release;
|
||||
}
|
||||
info2.new_data_offset = data_offset;
|
||||
new_data_offset = data_offset;
|
||||
}
|
||||
} else if (delta_disks > 0) {
|
||||
/* need space before */
|
||||
|
@ -2249,14 +2249,14 @@ static int set_new_data_offset(struct mdinfo *sra, struct supertype *st,
|
|||
goto release;
|
||||
}
|
||||
if (data_offset == INVALID_SECTORS)
|
||||
info2.new_data_offset = info2.data_offset - min;
|
||||
new_data_offset = sd->data_offset - min;
|
||||
else {
|
||||
if (data_offset > info2.data_offset - min) {
|
||||
if (data_offset > sd->data_offset - min) {
|
||||
pr_err("--data-offset too large for %s\n",
|
||||
dn);
|
||||
goto release;
|
||||
}
|
||||
info2.new_data_offset = data_offset;
|
||||
new_data_offset = data_offset;
|
||||
}
|
||||
} else {
|
||||
if (dir == 0) {
|
||||
|
@ -2264,65 +2264,63 @@ static int set_new_data_offset(struct mdinfo *sra, struct supertype *st,
|
|||
* was set we would have already decided,
|
||||
* so just choose direction with most space.
|
||||
*/
|
||||
if (info2.space_before > info2.space_after)
|
||||
if (before > after)
|
||||
dir = -1;
|
||||
else
|
||||
dir = 1;
|
||||
sysfs_set_str(sra, NULL, "reshape_direction",
|
||||
dir == 1 ? "backwards" : "forwards");
|
||||
}
|
||||
|
||||
switch (dir) {
|
||||
case 1: /* Increase data offset */
|
||||
if (dir > 0) {
|
||||
/* Increase data offset */
|
||||
if (after < min) {
|
||||
pr_err("Insufficient tail-space for reshape on %s\n",
|
||||
dn);
|
||||
goto release;
|
||||
}
|
||||
if (data_offset != INVALID_SECTORS &&
|
||||
data_offset < info2.data_offset + min) {
|
||||
data_offset < sd->data_offset + min) {
|
||||
pr_err("--data-offset too small on %s\n",
|
||||
dn);
|
||||
goto release;
|
||||
}
|
||||
if (data_offset != INVALID_SECTORS)
|
||||
info2.new_data_offset = data_offset;
|
||||
new_data_offset = data_offset;
|
||||
else {
|
||||
unsigned long long off = after / 2;
|
||||
off &= ~7ULL;
|
||||
if (off < min)
|
||||
off = min;
|
||||
info2.new_data_offset =
|
||||
info2.data_offset + off;
|
||||
new_data_offset =
|
||||
sd->data_offset + off;
|
||||
}
|
||||
break;
|
||||
case -1: /* Decrease data offset */
|
||||
} else {
|
||||
/* Decrease data offset */
|
||||
if (before < min) {
|
||||
pr_err("insufficient head-room on %s\n",
|
||||
dn);
|
||||
goto release;
|
||||
}
|
||||
if (data_offset != INVALID_SECTORS &&
|
||||
data_offset < info2.data_offset - min) {
|
||||
data_offset < sd->data_offset - min) {
|
||||
pr_err("--data-offset too small on %s\n",
|
||||
dn);
|
||||
goto release;
|
||||
}
|
||||
if (data_offset != INVALID_SECTORS)
|
||||
info2.new_data_offset = data_offset;
|
||||
new_data_offset = data_offset;
|
||||
else {
|
||||
unsigned long long off = before / 2;
|
||||
off &= ~7ULL;
|
||||
if (off < min)
|
||||
off = min;
|
||||
info2.new_data_offset =
|
||||
info2.data_offset - off;
|
||||
new_data_offset =
|
||||
sd->data_offset - off;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (sysfs_set_num(sra, sd, "new_offset",
|
||||
info2.new_data_offset) < 0) {
|
||||
new_data_offset) < 0) {
|
||||
err = errno;
|
||||
err = -1;
|
||||
if (errno == E2BIG && data_offset != INVALID_SECTORS) {
|
||||
|
|
Loading…
Reference in New Issue