RE: [PATCH 1/3] DAX: move RADIX_DAX_ definitions to dax.c

From: "Wilcox, Matthew R" <matthew.r.wilcox@intel.com>
To: NeilBrown <neilb@suse.com>,
	Ross Zwisler <ross.zwisler@linux.intel.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jan Kara <jack@suse.cz>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: RE: [PATCH 1/3] DAX: move RADIX_DAX_ definitions to dax.c
Date: Mon, 29 Feb 2016 14:28:46 +0000	[thread overview]
Message-ID: <100D68C7BA14664A8938383216E40DE0421D3AB4@FMSMSX114.amr.corp.intel.com> (raw)
In-Reply-To: <145663616971.3865.212066814876758706.stgit@notabene>

I agree with this patch, but it's already part of the patchset that I'm working on, so merging this patch now would just introduce churn for me.

-----Original Message-----
From: NeilBrown [mailto:neilb@suse.com] 
Sent: Saturday, February 27, 2016 9:09 PM
To: Ross Zwisler; Wilcox, Matthew R; Andrew Morton; Jan Kara
Cc: linux-kernel@vger.kernel.org; linux-fsdevel@vger.kernel.org; linux-mm@kvack.org
Subject: [PATCH 1/3] DAX: move RADIX_DAX_ definitions to dax.c

These don't belong in radix-tree.c any more than PAGECACHE_TAG_* do.
Let's try to maintain the idea that radix-tree simply implements an
abstract data type.

Signed-off-by: NeilBrown <neilb@suse.com>
---
 fs/dax.c                   |    9 +++++++++
 include/linux/radix-tree.h |    9 ---------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/fs/dax.c b/fs/dax.c
index 711172450da6..9c4d697fb6fc 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -32,6 +32,15 @@
 #include <linux/pfn_t.h>
 #include <linux/sizes.h>
 
+#define RADIX_DAX_MASK	0xf
+#define RADIX_DAX_SHIFT	4
+#define RADIX_DAX_PTE  (0x4 | RADIX_TREE_EXCEPTIONAL_ENTRY)
+#define RADIX_DAX_PMD  (0x8 | RADIX_TREE_EXCEPTIONAL_ENTRY)
+#define RADIX_DAX_TYPE(entry) ((unsigned long)entry & RADIX_DAX_MASK)
+#define RADIX_DAX_SECTOR(entry) (((unsigned long)entry >> RADIX_DAX_SHIFT))
+#define RADIX_DAX_ENTRY(sector, pmd) ((void *)((unsigned long)sector << \
+		RADIX_DAX_SHIFT | (pmd ? RADIX_DAX_PMD : RADIX_DAX_PTE)))
+
 static long dax_map_atomic(struct block_device *bdev, struct blk_dax_ctl *dax)
 {
 	struct request_queue *q = bdev->bd_queue;
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index f54be7082207..968150ab8a1c 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -51,15 +51,6 @@
 #define RADIX_TREE_EXCEPTIONAL_ENTRY	2
 #define RADIX_TREE_EXCEPTIONAL_SHIFT	2
 
-#define RADIX_DAX_MASK	0xf
-#define RADIX_DAX_SHIFT	4
-#define RADIX_DAX_PTE  (0x4 | RADIX_TREE_EXCEPTIONAL_ENTRY)
-#define RADIX_DAX_PMD  (0x8 | RADIX_TREE_EXCEPTIONAL_ENTRY)
-#define RADIX_DAX_TYPE(entry) ((unsigned long)entry & RADIX_DAX_MASK)
-#define RADIX_DAX_SECTOR(entry) (((unsigned long)entry >> RADIX_DAX_SHIFT))
-#define RADIX_DAX_ENTRY(sector, pmd) ((void *)((unsigned long)sector << \
-		RADIX_DAX_SHIFT | (pmd ? RADIX_DAX_PMD : RADIX_DAX_PTE)))
-
 static inline int radix_tree_is_indirect_ptr(void *ptr)
 {
 	return (int)((unsigned long)ptr & RADIX_TREE_INDIRECT_PTR);
