[PATCH v6 1/5] block: Add alternative_gpt_sector() operation
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2021-08-18 22:19:44
Also in:
linux-block, linux-tegra
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Add alternative_gpt_sector() block device operation which specifies alternative location of a GPT entry. This allows us to support Android devices that have GPT entry at a non-standard location and can't be repartitioned easily. Suggested-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- include/linux/blkdev.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 111a3911c4d2..d65c8f60ad8e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h@@ -1850,6 +1850,13 @@ struct block_device_operations { char *(*devnode)(struct gendisk *disk, umode_t *mode); struct module *owner; const struct pr_ops *pr_ops; + + /* + * Special callback for probing GPT entry at a given sector. + * Needed by Android devices, used by GPT scanner and MMC blk + * driver. + */ + int (*alternative_gpt_sector)(struct gendisk *disk, sector_t *sector); }; #ifdef CONFIG_COMPAT
--
2.32.0