Ping ?
On Mon, 2025-06-02 at 09:50 +0200, Joakim Tjernlund wrote:
> This enables mounting, like JFFS2, MTD devices by "label":
> mount -t squashfs mtd:appfs /tmp
> and cmdline argument:
> root=mtd:rootfs
>
> where mtd:appfs comes from:
> # > cat /proc/mtd
> dev: size erasesize name
> ...
> mtd22: 00750000 00010000 "appfs"
>
> Signed-off-by: Joakim Tjernlund <joakim.tjernlund@xxxxxxxxxxxx>
> ---
>
> - kernel test bot found white space issues, fix these.
> block/bdev.c | 21 ++++++++++++++++++---
> 1 file changed, 18 insertions(+), 3 deletions(-)
>
> diff --git a/block/bdev.c b/block/bdev.c
> index 889ec6e002d7..0e53ce99481b 100644
> --- a/block/bdev.c
> +++ b/block/bdev.c
> @@ -17,6 +17,7 @@
> #include <linux/module.h>
> #include <linux/blkpg.h>
> #include <linux/magic.h>
> +#include <linux/mtd/mtd.h>
> #include <linux/buffer_head.h>
> #include <linux/swap.h>
> #include <linux/writeback.h>
> @@ -1075,9 +1076,23 @@ struct file *bdev_file_open_by_path(const char *path, blk_mode_t mode,
> dev_t dev;
> int error;
>
> - error = lookup_bdev(path, &dev);
> - if (error)
> - return ERR_PTR(error);
> +#ifdef CONFIG_MTD_BLOCK
> + if (!strncmp(path, "mtd:", 4)) {
> + struct mtd_info *mtd;
> +
> + /* mount by MTD device name */
> + pr_debug("path name \"%s\"\n", path);
> + mtd = get_mtd_device_nm(path + 4);
> + if (IS_ERR(mtd))
> + return ERR_PTR(-EINVAL);
> + dev = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
> + } else
> +#endif
> + {
> + error = lookup_bdev(path, &dev);
> + if (error)
> + return ERR_PTR(error);
> + }
>
> file = bdev_file_open_by_dev(dev, mode, holder, hops);
> if (!IS_ERR(file) && (mode & BLK_OPEN_WRITE)) {
