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dax: fix false CONFIG_BLOCK dependency

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In the BLOCK=n case the dax core does not need to / must not emit the
block-device-dax helpers. Otherwise it leads to compile errors.

Cc: Arnd Bergmann <arnd@arndb.de>
Reported-by: Fabian Frederick <fabf@skynet.be>
Fixes: ef51042472f5 ("block, dax: move 'select DAX' from BLOCK to FS_DAX")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2017-05-13 16:18:21 -07:00
parent 2ea659a9ef
commit 9d109081c2
1 changed files with 2 additions and 0 deletions
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2
drivers/dax/super.c
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@ -44,6 +44,7 @@ void dax_read_unlock(int id)
} }
EXPORT_SYMBOL_GPL(dax_read_unlock); EXPORT_SYMBOL_GPL(dax_read_unlock);
#ifdef CONFIG_BLOCK
int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size, int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size,
pgoff_t *pgoff) pgoff_t *pgoff)
{ {
@ -112,6 +113,7 @@ int __bdev_dax_supported(struct super_block *sb, int blocksize)
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(__bdev_dax_supported); EXPORT_SYMBOL_GPL(__bdev_dax_supported);
#endif
/** /**
* struct dax_device - anchor object for dax services * struct dax_device - anchor object for dax services