[RFC 1/4] iomap: use BLK_MAX_BLOCK_SIZE for the iomap zero page

[Luis Chamberlain <mcgrof@xxxxxxxxxx>]

There is no point in modifying two locations now that we have
a sensible BLK_MAX_BLOCK_SIZE defined which is only lifted once
we have tested and validated things.

Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
 fs/iomap/direct-io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index 0e47da82b0c2..aa109f4ee491 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c
@@ -30,7 +30,7 @@
 /*
  * Used for sub block zeroing in iomap_dio_zero()
  */
-#define IOMAP_ZERO_PAGE_SIZE (SZ_64K)
+#define IOMAP_ZERO_PAGE_SIZE (BLK_MAX_BLOCK_SIZE)
 #define IOMAP_ZERO_PAGE_ORDER (get_order(IOMAP_ZERO_PAGE_SIZE))
 static struct page *zero_page;
 
-- 
2.47.2