When rrpc_write_ppalist_rq and rrpc_read_ppalist_rq succeed, we setup
rq correctly, but nvm_submit_io failed due to cannot allocate request
or nvme_nvm_command, we return error but forget to do the cleanup job
this patch mentioned.
2015-12-21 19:22 GMT+08:00 Matias Bjørling <mb@xxxxxxxxxxx>:
> On 12/21/2015 08:32 AM, Wenwei Tao wrote:
>>
>> after io submission failed, before free rq, delete rq from
>> rrpc's inflight list, leave no bad item in the list. And
>> free rq's ppa_list to avoid memory leak.
>>
>> Signed-off-by: Wenwei Tao <ww.tao0320@xxxxxxxxx>
>> ---
>> drivers/lightnvm/rrpc.c | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
>> index a1e7488..c0886a8 100644
>> --- a/drivers/lightnvm/rrpc.c
>> +++ b/drivers/lightnvm/rrpc.c
>> @@ -843,6 +843,12 @@ static int rrpc_submit_io(struct rrpc *rrpc, struct
>> bio *bio,
>> if (err) {
>> pr_err("rrpc: I/O submission failed: %d\n", err);
>> bio_put(bio);
>> + if (!(flags & NVM_IOTYPE_GC)) {
>> + rrpc_unlock_rq(rrpc, rqd);
>> + if (rqd->nr_pages > 1)
>> + nvm_dev_dma_free(rrpc->dev,
>> + rqd->ppa_list, rqd->dma_ppa_list);
>> + }
>> return NVM_IO_ERR;
>> }
>>
>>
>
> I can't seem to find the bug. nvm_dev_dma_free is called when
> rrpc_write_ppalist_rq and rrpc_read_ppalist_rq fails. Where is it missing?
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