device-dax: Drop register_filesystem() (1a6e9e76) · Commits · 戴 / test

The device-dax fs is only there to allocate a common inode for each device-node that refers to the same device by major:minor. It is otherwise not user mountable and need not be displayed in /proc/filesystems. Reported-by:

Al Viro <viro@zeniv.linux.org.uk> Acked-by:

Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:

Dan Williams <dan.j.williams@intel.com> Signed-off-by:

Al Viro <viro@zeniv.linux.org.uk>

drivers/dax/super.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -630,10 +630,6 @@ static int dax_fs_init(void)
		if (!dax_cache)
		return -ENOMEM;

		rc = register_filesystem(&dax_fs_type);
		if (rc)
		goto err_register_fs;

		dax_mnt = kern_mount(&dax_fs_type);
		if (IS_ERR(dax_mnt)) {
		rc = PTR_ERR(dax_mnt);
		@@ -644,8 +640,6 @@ static int dax_fs_init(void)
		return 0;

		err_mount:
		unregister_filesystem(&dax_fs_type);
		err_register_fs:
		kmem_cache_destroy(dax_cache);

		return rc;
		@@ -654,7 +648,6 @@ static int dax_fs_init(void)
		static void dax_fs_exit(void)
		{
		kern_unmount(dax_mnt);
		unregister_filesystem(&dax_fs_type);
		kmem_cache_destroy(dax_cache);
		}

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