dax: fix false CONFIG_BLOCK dependency

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 <[email protected]> Reported-by: Fabian Frederick <[email protected]> Fixes: ef51042 ("block, dax: move 'select DAX' from BLOCK to FS_DAX") Signed-off-by: Dan Williams <[email protected]>
kyagi · May 13, 2017 · 9d10908 · 9d10908
1 parent 2ea659a
commit 9d10908
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/dax/super.c b/drivers/dax/super.c
@@ -44,6 +44,7 @@ void dax_read_unlock(int id)
 }
 EXPORT_SYMBOL_GPL(dax_read_unlock);
 
+#ifdef CONFIG_BLOCK
 int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size,
 		pgoff_t *pgoff)
 {
@@ -112,6 +113,7 @@ int __bdev_dax_supported(struct super_block *sb, int blocksize)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(__bdev_dax_supported);
+#endif
 
 /**
  * struct dax_device - anchor object for dax services