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authorMike Snitzer <snitzer@redhat.com>2013-08-28 04:03:00 +0400
committerMike Snitzer <snitzer@redhat.com>2013-09-06 04:46:06 +0400
commitf11c1c5693fac339d412b0b59b54693ddcb776ff (patch)
treeb38fbde0a4d8bdeb1341dc65c60d736c7b74254a /drivers/md/dm-ioctl.c
parent00c4fc3b1f590288cb3c42f36da50f49a513cfcf (diff)
downloadlinux-f11c1c5693fac339d412b0b59b54693ddcb776ff.tar.xz
dm ioctl: cleanup error handling in table_load
Make use of common cleanup code. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-ioctl.c')
-rw-r--r--drivers/md/dm-ioctl.c34
1 files changed, 16 insertions, 18 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 42cca3642010..e9c0de75010e 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1262,26 +1262,21 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
r = dm_table_create(&t, get_mode(param), param->target_count, md);
if (r)
- goto out;
+ goto err;
/* Protect md->type and md->queue against concurrent table loads. */
dm_lock_md_type(md);
r = populate_table(t, param, param_size);
- if (r) {
- dm_table_destroy(t);
- dm_unlock_md_type(md);
- goto out;
- }
+ if (r)
+ goto err_unlock_md_type;
immutable_target_type = dm_get_immutable_target_type(md);
if (immutable_target_type &&
(immutable_target_type != dm_table_get_immutable_target_type(t))) {
DMWARN("can't replace immutable target type %s",
immutable_target_type->name);
- dm_table_destroy(t);
- dm_unlock_md_type(md);
r = -EINVAL;
- goto out;
+ goto err_unlock_md_type;
}
if (dm_get_md_type(md) == DM_TYPE_NONE)
@@ -1289,19 +1284,15 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
dm_set_md_type(md, dm_table_get_type(t));
else if (dm_get_md_type(md) != dm_table_get_type(t)) {
DMWARN("can't change device type after initial table load.");
- dm_table_destroy(t);
- dm_unlock_md_type(md);
r = -EINVAL;
- goto out;
+ goto err_unlock_md_type;
}
/* setup md->queue to reflect md's type (may block) */
r = dm_setup_md_queue(md);
if (r) {
DMWARN("unable to set up device queue for new table.");
- dm_table_destroy(t);
- dm_unlock_md_type(md);
- goto out;
+ goto err_unlock_md_type;
}
dm_unlock_md_type(md);
@@ -1311,9 +1302,8 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
if (!hc || hc->md != md) {
DMWARN("device has been removed from the dev hash table.");
up_write(&_hash_lock);
- dm_table_destroy(t);
r = -ENXIO;
- goto out;
+ goto err_destroy_table;
}
if (hc->new_map)
@@ -1324,7 +1314,6 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
param->flags |= DM_INACTIVE_PRESENT_FLAG;
__dev_status(md, param);
-out:
if (old_map) {
dm_sync_table(md);
dm_table_destroy(old_map);
@@ -1332,6 +1321,15 @@ out:
dm_put(md);
+ return 0;
+
+err_unlock_md_type:
+ dm_unlock_md_type(md);
+err_destroy_table:
+ dm_table_destroy(t);
+err:
+ dm_put(md);
+
return r;
}