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| author | Dmitry Osipenko <digetx@gmail.com> | 2021-08-20 03:45:33 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-24 10:09:06 -0600 |
| commit | 0bdfbca8a623e262e0f343b143151000a300cbaf (patch) | |
| tree | 92ac78321d877a4ede589b75a391618b442fa913 /include/linux/blkdev.h | |
| parent | d9cf3bd531844ffbfe94b16e417037a16efc988d (diff) | |
| download | lwn-0bdfbca8a623e262e0f343b143151000a300cbaf.tar.gz lwn-0bdfbca8a623e262e0f343b143151000a300cbaf.zip | |
block: Add alternative_gpt_sector() operation
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.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20210820004536.15791-2-digetx@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 22b5b8502d2a..c9cb12483e12 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1872,6 +1872,13 @@ 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 |