[PATCH 01/30] block: move the SECTOR_SIZE related definitions to blk_types.h

Christoph Hellwig
2021-10-15T13:27:14Z

Ensure these are always available for inlines in the various block layer
headers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/linux/blk_types.h | 17 +++++++++++++++++
include/linux/blkdev.h | 17 -----------------
2 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 3b967053e9f5a..dc8da0c7fa09b 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -20,6 +20,23 @@ struct cgroup_subsys_state;
typedef void (bio_end_io_t) (struct bio *);
struct bio_crypt_ctx;

+/*
+ * The basic unit of block I/O is a sector. It is used in a number of contexts
+ * in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
+ * bytes. Variables of type sector_t represent an offset or size that is a
+ * multiple of 512 bytes. Hence these two constants.
+ */
+#ifndef SECTOR_SHIFT
+#define SECTOR_SHIFT 9
+#endif
+#ifndef SECTOR_SIZE
+#define SECTOR_SIZE (1 << SECTOR_SHIFT)
+#endif
+
+#define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
+#define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT)
+#define SECTOR_MASK (PAGE_SECTORS - 1)
+
struct block_device {
sector_t bd_start_sect;
struct disk_stats __percpu *bd_stats;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 17705c970d7e1..161496d1aced0 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -571,23 +571,6 @@ static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
return bdev->bd_disk->queue; /* this is never NULL */
}

-/*
- * The basic unit of block I/O is a sector. It is used in a number of contexts
- * in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
- * bytes. Variables of type sector_t represent an offset or size that is a
- * multiple of 512 bytes. Hence these two constants.
- */
-#ifndef SECTOR_SHIFT
-#define SECTOR_SHIFT 9
-#endif
-#ifndef SECTOR_SIZE
-#define SECTOR_SIZE (1 << SECTOR_SHIFT)
-#endif
-
-#define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
-#define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT)
-#define SECTOR_MASK (PAGE_SECTORS - 1)
-
#ifdef CONFIG_BLK_DEV_ZONED

/* Helper to convert BLK_ZONE_ZONE_XXX to its string format XXX */
--
2.30.2