@@ -880,7 +880,12 @@ static void process_update_delta_index(struct ploop *ploop,
const char *map = cmd->update_delta_index.map;
u8 level = cmd->update_delta_index.level;
unsigned int cluster, dst_cluster, n;
- int ret = -EINVAL;
+ int ret;
+
+ force_defer_bio_count_inc(ploop);
+ ret = ploop_inflight_bios_ref_switch(ploop, true);
+ if (ret)
+ goto out;
write_lock_irq(&ploop->bat_rwlock);
/* Check all */
@@ -891,8 +896,10 @@ static void process_update_delta_index(struct ploop *ploop,
break;
map += n;
}
- if (map[0] != '\0')
+ if (map[0] != '\0') {
+ ret = -EINVAL;
goto unlock;
+ }
/* Commit all */
map = cmd->update_delta_index.map;
while (sscanf(map, "%u:%u;%n", &cluster, &dst_cluster, &n) == 2) {
@@ -903,9 +910,8 @@ static void process_update_delta_index(struct ploop *ploop,
ret = 0;
unlock:
write_unlock_irq(&ploop->bat_rwlock);
- if (!ret)
- ploop_inflight_bios_ref_switch(ploop, false);
-
+out:
+ force_defer_bio_count_dec(ploop);
cmd->retval = ret;
complete(&cmd->comp); /* Last touch of cmd memory */
}
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> --- drivers/md/dm-ploop-cmd.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)