dm zoned: fix potential NULL dereference in dmz_do_reclaim()
This function is supposed to return error pointers so it matches the
dmz_get_rnd_zone_for_reclaim() function. The current code could lead to
a NULL dereference in dmz_do_reclaim()
Fixes: b234c6d7a7
("dm zoned: improve error handling in reclaim")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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@ -1588,7 +1588,7 @@ static struct dm_zone *dmz_get_seq_zone_for_reclaim(struct dmz_metadata *zmd)
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struct dm_zone *zone;
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if (list_empty(&zmd->map_seq_list))
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return NULL;
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return ERR_PTR(-EBUSY);
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list_for_each_entry(zone, &zmd->map_seq_list, link) {
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if (!zone->bzone)
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@ -1597,7 +1597,7 @@ static struct dm_zone *dmz_get_seq_zone_for_reclaim(struct dmz_metadata *zmd)
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return zone;
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}
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return NULL;
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return ERR_PTR(-EBUSY);
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}
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/*
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