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| author |   Yasuaki Ishimatsu <yasu.isimatu@gmail.com> | 2016-11-16 08:26:11 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2016-11-16 08:26:11 -0700 |
| commit | 92153d30c7c8863022cad684926d71ffaed6a56d (patch) | |
| tree | f1ebf00c6fa2521dec6234ca2b76ebb6c23a49d2 /drivers/block | |
| parent | block: deal with stale req count of plug list (diff) | |
| download | linux-dev-92153d30c7c8863022cad684926d71ffaed6a56d.tar.xz linux-dev-92153d30c7c8863022cad684926d71ffaed6a56d.zip | |
null_blk: add usage hints for NVM
If CONFIG_NVM is disabled, loading null_block module with use_lightnvm=1
fails. But there are no messages and documents related to the failure.
Add the appropriate error message.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Massaged the text a bit.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/null_blk.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index ba6f4a2e73db..4943ee22716e 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -577,6 +577,7 @@ static void null_nvm_unregister(struct nullb *nullb) #else static int null_nvm_register(struct nullb *nullb) { + pr_err("null_blk: CONFIG_NVM needs to be enabled for LightNVM\n"); return -EINVAL; } static void null_nvm_unregister(struct nullb *nullb) {} |