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[RFC,13/68] vfs: Convert dax to use the new mount API

Message ID 155373013052.7602.6796122678721860698.stgit@warthog.procyon.org.uk (mailing list archive)
State New, archived
Headers show
Series VFS: Convert a bunch of filesystems to the new mount API | expand

Commit Message

David Howells March 27, 2019, 11:42 p.m. UTC
Convert the dax filesystem to the new internal mount API as the old
one will be obsoleted and removed.  This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.

See Documentation/filesystems/mount_api.txt for more information.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Dan Williams <dan.j.williams@intel.com>
cc: Vishal Verma <vishal.l.verma@intel.com>
cc: Keith Busch <keith.busch@intel.com>
cc: Dave Jiang <dave.jiang@intel.com>
cc: linux-nvdimm@lists.01.org
---

 drivers/dax/super.c |   13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)
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Patch

diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 0a339b85133e..d8e503678a11 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -13,6 +13,7 @@ 
 #include <linux/pagemap.h>
 #include <linux/module.h>
 #include <linux/mount.h>
+#include <linux/fs_context.h>
 #include <linux/magic.h>
 #include <linux/genhd.h>
 #include <linux/pfn_t.h>
@@ -440,16 +441,16 @@  static const struct super_operations dax_sops = {
 	.drop_inode = generic_delete_inode,
 };
 
-static struct dentry *dax_mount(struct file_system_type *fs_type,
-		int flags, const char *dev_name, void *data)
+static int dax_init_fs_context(struct fs_context *fc)
 {
-	return mount_pseudo(fs_type, "dax:", &dax_sops, NULL, DAXFS_MAGIC);
+	return vfs_init_pseudo_fs_context(fc, "dax:",
+					  &dax_sops, NULL, NULL, DAXFS_MAGIC);
 }
 
 static struct file_system_type dax_fs_type = {
-	.name = "dax",
-	.mount = dax_mount,
-	.kill_sb = kill_anon_super,
+	.name		= "dax",
+	.init_fs_context = dax_init_fs_context,
+	.kill_sb	= kill_anon_super,
 };
 
 static int dax_test(struct inode *inode, void *data)