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SubjectAdd "lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM" to v4.4.y stable tree?
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Hi,

I had a build of v4.4.24, with CONFIG_NVM not set, fail like this:
    drivers/block/null_blk.c:569:27: error: storage size of 'null_lnvm_dev_ops' isn't known
static struct nvm_dev_ops null_lnvm_dev_ops;
^~~~~~~~~~~~~~~~~
scripts/Makefile.build:264: recipe for target 'drivers/block/null_blk.o' failed
make[2]: *** [drivers/block/null_blk.o] Error 1
scripts/Makefile.build:403: recipe for target 'drivers/block' failed
make[1]: *** [drivers/block] Error 2
Makefile:959: recipe for target 'drivers' failed
make: *** [drivers] Error 2

Jens' commit a7fd9a4f3e81 ("lightnvm: ensure that nvm_dev_ops can be
used without CONFIG_NVM") fixed that for me (it did require a small
context change to get it applied to v4.4.24). Does it make sense to add
that commit to the v4.4.y stable tree?

Thanks,


Paul Bolle

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