[PATCH] dax: Remove an unused field in struct dax_operations

[Christophe JAILLET]

.dax_supported() was apparently removed by commit 7b0800d00dae ("dax:
remove dax_capable") on 2021-11.

Remove the now unused function pointer from the struct dax_operations.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Slightly compile tested only, but "git grep dax_supported" now returns
nothing.
---
 include/linux/dax.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/include/linux/dax.h b/include/linux/dax.h
index 9d3e3327af4c..df41a0017b31 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -27,12 +27,6 @@ struct dax_operations {
 	 */
 	long (*direct_access)(struct dax_device *, pgoff_t, long,
 			enum dax_access_mode, void **, pfn_t *);
-	/*
-	 * Validate whether this device is usable as an fsdax backing
-	 * device.
-	 */
-	bool (*dax_supported)(struct dax_device *, struct block_device *, int,
-			sector_t, sector_t);
 	/* zero_page_range: required operation. Zero page range   */
 	int (*zero_page_range)(struct dax_device *, pgoff_t, size_t);
 	/*
-- 
2.46.0