dm bufio: move dm-bufio.h to include/linux/

Move dm-bufio.h to include/linux/ so that external GPL'd DM target
modules can use it.

It is better to allow the use of dm-bufio than force external modules
to implement the equivalent buffered IO mechanism in some new way.  The
hope is this will encourage the use of dm-bufio; which will then make it
easier for a GPL'd external DM target module to be included upstream.

A couple dm-bufio EXPORT_SYMBOL exports have also been updated to use
EXPORT_SYMBOL_GPL.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

6 files changed, 10 insertions, 10 deletions

diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index f5360a6260ff..87795a361d09 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -6,7 +6,7 @@
  * This file is released under the GPL.
  */
 
-#include "dm-bufio.h"
+#include <linux/dm-bufio.h>
 
 #include <linux/device-mapper.h>
 #include <linux/dm-io.h>
@@ -1478,13 +1478,13 @@ void dm_bufio_forget(struct dm_bufio_client *c, sector_t block)
 
         dm_bufio_unlock(c);
 }
-EXPORT_SYMBOL(dm_bufio_forget);
+EXPORT_SYMBOL_GPL(dm_bufio_forget);
 
 void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned n)
 {
         c->minimum_buffers = n;
 }
-EXPORT_SYMBOL(dm_bufio_set_minimum_buffers);
+EXPORT_SYMBOL_GPL(dm_bufio_set_minimum_buffers);
 
 unsigned dm_bufio_get_block_size(struct dm_bufio_client *c)
 {
@@ -1690,7 +1690,7 @@ struct dm_bufio_client *dm_bufio_client_create(struct block_device *bdev, unsign
         INIT_LIST_HEAD(&c->reserved_buffers);
         c->need_reserved_buffers = reserved_buffers;
 
-        c->minimum_buffers = DM_BUFIO_MIN_BUFFERS;
+        dm_bufio_set_minimum_buffers(c, DM_BUFIO_MIN_BUFFERS);
 
         init_waitqueue_head(&c->free_buffer_wait);
         c->async_write_error = 0;
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 6c81b11d0521..77d9fe58dae2 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -18,7 +18,7 @@
 #include <crypto/hash.h>
 #include <crypto/skcipher.h>
 #include <linux/async_tx.h>
-#include "dm-bufio.h"
+#include <linux/dm-bufio.h>
 
 #define DM_MSG_PREFIX "integrity"
 
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index c5534d294773..3c50c4e4da8f 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -14,7 +14,7 @@
 #include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/dm-io.h>
-#include "dm-bufio.h"
+#include <linux/dm-bufio.h>
 
 #define DM_MSG_PREFIX "persistent snapshot"
 #define DM_CHUNK_SIZE_DEFAULT_SECTORS 32        /* 16KB */
diff --git a/drivers/md/dm-verity.h b/drivers/md/dm-verity.h
index b675bc015512..69f9a298f8c9 100644
--- a/drivers/md/dm-verity.h
+++ b/drivers/md/dm-verity.h
@@ -12,7 +12,7 @@
 #ifndef DM_VERITY_H
 #define DM_VERITY_H
 
-#include "dm-bufio.h"
+#include <linux/dm-bufio.h>
 #include <linux/device-mapper.h>
 #include <crypto/hash.h>
 
diff --git a/drivers/md/persistent-data/dm-block-manager.c b/drivers/md/persistent-data/dm-block-manager.c
index ea15d220ced7..492a3f8ac119 100644
--- a/drivers/md/persistent-data/dm-block-manager.c
+++ b/drivers/md/persistent-data/dm-block-manager.c
@@ -5,8 +5,8 @@
  */
 #include "dm-block-manager.h"
 #include "dm-persistent-data-internal.h"
-#include "../dm-bufio.h"
 
+#include <linux/dm-bufio.h>
 #include <linux/crc32c.h>
 #include <linux/module.h>
 #include <linux/slab.h>
diff --git a/drivers/md/dm-bufio.h b/include/linux/dm-bufio.h
index be732d3f8611..3c8b7d274bd9 100644
--- a/drivers/md/dm-bufio.h
+++ b/include/linux/dm-bufio.h
@@ -6,8 +6,8 @@
  * This file is released under the GPL.
  */
 
-#ifndef DM_BUFIO_H
-#define DM_BUFIO_H
+#ifndef _LINUX_DM_BUFIO_H
+#define _LINUX_DM_BUFIO_H
 
 #include <linux/blkdev.h>
 #include <linux/types.h>