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dm raid1: fix leakage 

Add missing 'dm_io_client_destroy' to alloc_context error path.
Reorganize mirror constructor error path in order to prevent
workqueue leakage.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Dmitry Monakhov 2007-10-19 22:38:39 +01:00 committed by Alasdair G Kergon
parent 815f9e3270
commit a72cf737e0
1 changed files with 15 additions and 13 deletions
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28
drivers/md/dm-raid1.c
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@ -974,6 +974,7 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors,
if (rh_init(&ms->rh, ms, dl, region_size, ms->nr_regions)) {
ti->error = "Error creating dirty region hash";
dm_io_client_destroy(ms->io_client);
kfree(ms);
return NULL;
}
@ -1163,16 +1164,14 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ms->kmirrord_wq = create_singlethread_workqueue("kmirrord");
if (!ms->kmirrord_wq) {
DMERR("couldn't start kmirrord");
free_context(ms, ti, m);
return -ENOMEM;
r = -ENOMEM;
goto err_free_context;
}
INIT_WORK(&ms->kmirrord_work, do_mirror);
r = parse_features(ms, argc, argv, &args_used);
if (r) {
free_context(ms, ti, ms->nr_mirrors);
return r;
}
if (r)
goto err_destroy_wq;
argv += args_used;
argc -= args_used;
@ -1188,19 +1187,22 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
if (argc) {
ti->error = "Too many mirror arguments";
free_context(ms, ti, ms->nr_mirrors);
return -EINVAL;
r = -EINVAL;
goto err_destroy_wq;
}
r = kcopyd_client_create(DM_IO_PAGES, &ms->kcopyd_client);
if (r) {
destroy_workqueue(ms->kmirrord_wq);
free_context(ms, ti, ms->nr_mirrors);
return r;
}
if (r)
goto err_destroy_wq;
wake(ms);
return 0;
err_destroy_wq:
destroy_workqueue(ms->kmirrord_wq);
err_free_context:
free_context(ms, ti, ms->nr_mirrors);
return r;
}
static void mirror_dtr(struct dm_target *ti)