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authorChristoph Hellwig <[email protected]>2021-10-18 12:11:25 +0200
committerJens Axboe <[email protected]>2021-10-18 14:43:23 -0600
commitbcc6e2cfaa48a4ad2e17719194f6d97a8e03f6c1 (patch)
tree9a36696de024646f0d341b904d56b94ec1c2cd8b
parent2a93ad8fcb377b9d6e05947de161e146f5be4de9 (diff)
block: add a sb_bdev_nr_blocks helper
Add a helper to return the size of sb->s_bdev in sb->s_blocksize_bits based unites. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Kees Cook <[email protected]> Reviewed-by: Chaitanya Kulkarni <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jens Axboe <[email protected]>
-rw-r--r--include/linux/genhd.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 01d27f3a970e..7b0326661a1e 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -251,6 +251,12 @@ static inline sector_t get_capacity(struct gendisk *disk)
return bdev_nr_sectors(disk->part0);
}
+static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
+{
+ return bdev_nr_sectors(sb->s_bdev) >>
+ (sb->s_blocksize_bits - SECTOR_SHIFT);
+}
+
int bdev_disk_changed(struct gendisk *disk, bool invalidate);
void blk_drop_partitions(struct gendisk *disk);