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Subject[PATCH 32/38] vfs: Convert xenfs to fs_context
From
Date
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
cc: Juergen Gross <jgross@suse.com>
cc: Stefano Stabellini <sstabellini@kernel.org>
cc: xen-devel@lists.xenproject.org
---

drivers/xen/xenfs/super.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c
index 71ddfb4cf61c..2e16214e9c7f 100644
--- a/drivers/xen/xenfs/super.c
+++ b/drivers/xen/xenfs/super.c
@@ -13,6 +13,7 @@
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/fs_context.h>
#include <linux/magic.h>

#include <xen/xen.h>
@@ -42,7 +43,7 @@ static const struct file_operations capabilities_file_ops = {
.llseek = default_llseek,
};

-static int xenfs_fill_super(struct super_block *sb, void *data, int silent)
+static int xenfs_fill_super(struct super_block *sb, struct fs_context *fc)
{
static const struct tree_descr xenfs_files[] = {
[2] = { "xenbus", &xen_xenbus_fops, S_IRUSR|S_IWUSR },
@@ -67,17 +68,25 @@ static int xenfs_fill_super(struct super_block *sb, void *data, int silent)
xen_initial_domain() ? xenfs_init_files : xenfs_files);
}

-static struct dentry *xenfs_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name,
- void *data)
+static int xenfs_get_tree(struct fs_context *fc)
{
- return mount_single(fs_type, flags, data, xenfs_fill_super);
+ return vfs_get_super(fc, vfs_get_single_super, xenfs_fill_super);
+}
+
+static const struct fs_context_operations xenfs_context_ops = {
+ .get_tree = xenfs_get_tree,
+};
+
+static int xenfs_init_fs_context(struct fs_context *fc)
+{
+ fc->ops = &xenfs_context_ops;
+ return 0;
}

static struct file_system_type xenfs_type = {
.owner = THIS_MODULE,
.name = "xenfs",
- .mount = xenfs_mount,
+ .init_fs_context = xenfs_init_fs_context,
.kill_sb = kill_litter_super,
};
MODULE_ALIAS_FS("xenfs");
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