The patch titled
Subject: dax: Move DAX-related functions to a new header
has been added to the -mm tree. Its filename is
dax-move-dax-related-functions-to-a-new-header.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/dax-move-dax-related-functions-to-a-new-header.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/dax-move-dax-related-functions-to-a-new-header.patch
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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Subject: dax: Move DAX-related functions to a new header
In order to handle the !CONFIG_TRANSPARENT_HUGEPAGES case, we need to
return VM_FAULT_FALLBACK from the inlined dax_pmd_fault(), which is
defined in linux/mm.h. Given that we don't want to include <linux/mm.h>
in <linux/fs.h>, the easiest solution is to move the DAX-related functions
to a new header, <linux/dax.h>. We could also have moved VM_FAULT_*
definitions to a new header, or a different header that isn't quite such a
boil-the-ocean header as <linux/mm.h>, but this felt like the best option.
Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Cc: Hillf Danton <dhillf@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/block_dev.c | 1 +
fs/ext2/file.c | 1 +
fs/ext2/inode.c | 1 +
fs/ext4/file.c | 1 +
fs/ext4/indirect.c | 1 +
fs/ext4/inode.c | 1 +
fs/xfs/xfs_buf.h | 1 +
include/linux/dax.h | 21 +++++++++++++++++++++
include/linux/fs.h | 14 --------------
9 files changed, 28 insertions(+), 14 deletions(-)
diff -puN fs/block_dev.c~dax-move-dax-related-functions-to-a-new-header fs/block_dev.c
--- a/fs/block_dev.c~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/block_dev.c
@@ -28,6 +28,7 @@
#include <linux/namei.h>
#include <linux/log2.h>
#include <linux/cleancache.h>
+#include <linux/dax.h>
#include <asm/uaccess.h>
#include "internal.h"
diff -puN fs/ext2/file.c~dax-move-dax-related-functions-to-a-new-header fs/ext2/file.c
--- a/fs/ext2/file.c~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/ext2/file.c
@@ -20,6 +20,7 @@
#include <linux/time.h>
#include <linux/pagemap.h>
+#include <linux/dax.h>
#include <linux/quotaops.h>
#include "ext2.h"
#include "xattr.h"
diff -puN fs/ext2/inode.c~dax-move-dax-related-functions-to-a-new-header fs/ext2/inode.c
--- a/fs/ext2/inode.c~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/ext2/inode.c
@@ -25,6 +25,7 @@
#include <linux/time.h>
#include <linux/highuid.h>
#include <linux/pagemap.h>
+#include <linux/dax.h>
#include <linux/quotaops.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h>
diff -puN fs/ext4/file.c~dax-move-dax-related-functions-to-a-new-header fs/ext4/file.c
--- a/fs/ext4/file.c~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/ext4/file.c
@@ -22,6 +22,7 @@
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/path.h>
+#include <linux/dax.h>
#include <linux/quotaops.h>
#include <linux/pagevec.h>
#include <linux/uio.h>
diff -puN fs/ext4/indirect.c~dax-move-dax-related-functions-to-a-new-header fs/ext4/indirect.c
--- a/fs/ext4/indirect.c~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/ext4/indirect.c
@@ -22,6 +22,7 @@
#include "ext4_jbd2.h"
#include "truncate.h"
+#include <linux/dax.h>
#include <linux/uio.h>
#include <trace/events/ext4.h>
diff -puN fs/ext4/inode.c~dax-move-dax-related-functions-to-a-new-header fs/ext4/inode.c
--- a/fs/ext4/inode.c~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/ext4/inode.c
@@ -22,6 +22,7 @@
#include <linux/time.h>
#include <linux/highuid.h>
#include <linux/pagemap.h>
+#include <linux/dax.h>
#include <linux/quotaops.h>
#include <linux/string.h>
#include <linux/buffer_head.h>
diff -puN fs/xfs/xfs_buf.h~dax-move-dax-related-functions-to-a-new-header fs/xfs/xfs_buf.h
--- a/fs/xfs/xfs_buf.h~dax-move-dax-related-functions-to-a-new-header
+++ a/fs/xfs/xfs_buf.h
@@ -23,6 +23,7 @@
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/fs.h>
+#include <linux/dax.h>
#include <linux/buffer_head.h>
#include <linux/uio.h>
#include <linux/list_lru.h>
diff -puN /dev/null include/linux/dax.h
--- /dev/null
+++ a/include/linux/dax.h
@@ -0,0 +1,21 @@
+#ifndef _LINUX_DAX_H
+#define _LINUX_DAX_H
+
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <asm/pgtable.h>
+
+ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
+ get_block_t, dio_iodone_t, int flags);
+int dax_clear_blocks(struct inode *, sector_t block, long size);
+int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
+int dax_truncate_page(struct inode *, loff_t from, get_block_t);
+int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
+ dax_iodone_t);
+int __dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
+ dax_iodone_t);
+int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
+#define dax_mkwrite(vma, vmf, gb, iod) dax_fault(vma, vmf, gb, iod)
+#define __dax_mkwrite(vma, vmf, gb, iod) __dax_fault(vma, vmf, gb, iod)
+
+#endif
diff -puN include/linux/fs.h~dax-move-dax-related-functions-to-a-new-header include/linux/fs.h
--- a/include/linux/fs.h~dax-move-dax-related-functions-to-a-new-header
+++ a/include/linux/fs.h
@@ -51,7 +51,6 @@ struct swap_info_struct;
struct seq_file;
struct workqueue_struct;
struct iov_iter;
-struct vm_fault;
extern void __init inode_init(void);
extern void __init inode_init_early(void);
@@ -2655,19 +2654,6 @@ extern loff_t fixed_size_llseek(struct f
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);
-ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
- get_block_t, dio_iodone_t, int flags);
-int dax_clear_blocks(struct inode *, sector_t block, long size);
-int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
-int dax_truncate_page(struct inode *, loff_t from, get_block_t);
-int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
- dax_iodone_t);
-int __dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
- dax_iodone_t);
-int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
-#define dax_mkwrite(vma, vmf, gb, iod) dax_fault(vma, vmf, gb, iod)
-#define __dax_mkwrite(vma, vmf, gb, iod) __dax_fault(vma, vmf, gb, iod)
-
#ifdef CONFIG_BLOCK
typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
loff_t file_offset);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxxxx are
mm-make-gup-handle-pfn-mapping-unless-foll_get-is-requested.patch
dax-move-dax-related-functions-to-a-new-header.patch
thp-prepare-for-dax-huge-pages.patch
mm-add-a-pmd_fault-handler.patch
mm-export-various-functions-for-the-benefit-of-dax.patch
mm-add-vmf_insert_pfn_pmd.patch
dax-add-huge-page-fault-support.patch
ext2-huge-page-fault-support.patch
ext4-huge-page-fault-support.patch
xfs-huge-page-fault-support.patch
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