From 2c2345c2b4fec30d12e1e1a6ee153a80af101e32 Mon Sep 17 00:00:00 2001 From: Roger Gammans Date: Wed, 4 Oct 2006 13:37:45 +0200 Subject: [PATCH] [PATCH] Document bi_sector and sector_t Signed-Off-By: Roger Gammans Signed-off-by: Jens Axboe --- include/linux/bio.h | 3 ++- include/linux/types.h | 6 +++++- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index 711c321a701..092dbd0e765 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -70,7 +70,8 @@ typedef void (bio_destructor_t) (struct bio *); * stacking drivers) */ struct bio { - sector_t bi_sector; + sector_t bi_sector; /* device address in 512 byte + sectors */ struct bio *bi_next; /* request queue link */ struct block_device *bi_bdev; unsigned long bi_flags; /* status, command, etc */ diff --git a/include/linux/types.h b/include/linux/types.h index 406d4ae5763..750f085fa56 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -129,8 +129,12 @@ typedef __s64 int64_t; /* this is a special 64bit data type that is 8-byte aligned */ #define aligned_u64 unsigned long long __attribute__((aligned(8))) -/* +/** * The type used for indexing onto a disc or disc partition. + * + * Linux always considers sectors to be 512 bytes long independently + * of the devices real block size. + * * If required, asm/types.h can override it and define * HAVE_SECTOR_T */ -- 2.41.1