2 /* MTD-based superblock management
11 #include <linux/mtd/super.h>
24  * - they are if the underlying MTD device is the same
28 	struct mtd_info *mtd = fc->sget_key;  in mtd_test_super()  local
32 			 mtd->index, mtd->name);  in mtd_test_super()
37 		 sb->s_mtd->index, sb->s_mtd->name, mtd->index, mtd->name);  in mtd_test_super()
42  * mark the superblock by the MTD device it is using
43  * - set the device number to be the correct MTD block device for pesuperstence
55  * get a superblock on an MTD-backed filesystem
58 		      struct mtd_info *mtd,  in mtd_get_sb()  argument
65 	fc->sget_key = mtd;  in mtd_get_sb()
73 			 mtd->index, mtd->name);  in mtd_get_sb()
74 		put_mtd_device(mtd);  in mtd_get_sb()
78 			 mtd->index, mtd->name);  in mtd_get_sb()
97  * get a superblock on an MTD-backed filesystem by MTD device number
103 	struct mtd_info *mtd;  in mtd_get_sb_by_nr()  local
105 	mtd = get_mtd_device(NULL, mtdnr);  in mtd_get_sb_by_nr()
106 	if (IS_ERR(mtd)) {  in mtd_get_sb_by_nr()
108 		return PTR_ERR(mtd);  in mtd_get_sb_by_nr()
111 	return mtd_get_sb(fc, mtd, fill_super);  in mtd_get_sb_by_nr()
115  * get_tree_mtd - Get a superblock based on a single MTD device
135 	 * CONFIG_BLOCK=n - we specify the underlying MTD device by number or  in get_tree_mtd()
143 			struct mtd_info *mtd;  in get_tree_mtd()  local
145 			/* mount by MTD device name */  in get_tree_mtd()
146 			pr_debug("MTDSB: mtd:%%s, name \"%s\"\n",  in get_tree_mtd()
149 			mtd = get_mtd_device_nm(fc->source + 4);  in get_tree_mtd()
150 			if (!IS_ERR(mtd))  in get_tree_mtd()
151 				return mtd_get_sb(fc, mtd, fill_super);  in get_tree_mtd()
153 			errorf(fc, "MTD: MTD device with name \"%s\" not found",  in get_tree_mtd()
157 			/* mount by MTD device number name */  in get_tree_mtd()
163 				pr_debug("MTDSB: mtd%%d, mtdnr %d\n", mtdnr);  in get_tree_mtd()
175 		errorf(fc, "MTD: Couldn't look up '%s': %d", fc->source, ret);  in get_tree_mtd()
186 		errorf(fc, "MTD: Attempt to mount non-MTD device \"%s\"",  in get_tree_mtd()
193  * destroy an MTD-based superblock