mismatch argconfig_type in submit_io()

[DaisukeIwai]

regress issues read/write command with --data_size=4k,
however argconfig_type in submit_io()'s data_size is "CFG_POSITIVE".
I guess either

• replace CFG_POSITIVE as CFG_LONG_SUFFIX in nvme.c line 2608
  or
• replace RAND_SIZE=4k as RAND_SIZE=4096 in regress line 29
  may be applied.

c8aab96

[sbates130272]

I would prefer to fix this in nvme.c. Let me see why this was never spotted before now and get back to you, Thanks for raising it as an issue. Does this break regress for you? If so can you tell me something about your system?

[sbates130272]

OK fixed along with a nasty bug where submit_io always returned 0! Thanks.

[DaisukeIwai]

Thanks for reply & quck fix. Yes, regress with c8aab96 breaks with "free(): invalid next size (fast)" in submit_io(). --data_size=4k was equal to --data_size=4, only 4byte size of buffer is not enough for read data buffer. Passed with f579aa4 on Ubuntu 15.04 x86_64 and our NVMe device. thank you,