[PATCH 24/38] vfs: Convert binfmt_misc to fs_context

[David Howells]

Signed-off-by: David Howells <dhowe...@redhat.com>
cc: Alexander Viro <v...@zeniv.linux.org.uk>
cc: linux-fsde...@vger.kernel.org
---

 fs/binfmt_misc.c |   20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index aa4a7a23ff99..0c32e59bfd20 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -22,6 +22,7 @@
 #include <linux/pagemap.h>
 #include <linux/namei.h>
 #include <linux/mount.h>
+#include <linux/fs_context.h>
 #include <linux/syscalls.h>
 #include <linux/fs.h>
 #include <linux/uaccess.h>
@@ -820,7 +821,7 @@ static const struct super_operations s_ops = {
        .evict_inode    = bm_evict_inode,
 };
 
-static int bm_fill_super(struct super_block *sb, void *data, int silent)
+static int bm_fill_super(struct super_block *sb, struct fs_context *fc)
 {
        int err;
        static const struct tree_descr bm_files[] = {
@@ -835,10 +836,19 @@ static int bm_fill_super(struct super_block *sb, void 
*data, int silent)
        return err;
 }
 
-static struct dentry *bm_mount(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *data)
+static int bm_get_tree(struct fs_context *fc)
 {
-       return mount_single(fs_type, flags, data, bm_fill_super);
+       return vfs_get_super(fc, vfs_get_single_super, bm_fill_super);
+}
+
+static const struct fs_context_operations bm_context_ops = {
+       .get_tree       = bm_get_tree,
+};
+
+static int bm_init_fs_context(struct fs_context *fc)
+{
+       fc->ops = &bm_context_ops;
+       return 0;
 }
 
 static struct linux_binfmt misc_format = {
@@ -849,7 +859,7 @@ static struct linux_binfmt misc_format = {
 static struct file_system_type bm_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "binfmt_misc",
-       .mount          = bm_mount,
+       .init_fs_context = bm_init_fs_context,
        .kill_sb        = kill_litter_super,
 };
 MODULE_ALIAS_FS("binfmt_misc");