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| author | Roger Gammans <roger@computer-surgery.co.uk> | 2006-10-04 13:37:45 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@nelson.home.kernel.dk> | 2006-10-04 19:32:09 +0200 |
| commit | 2c2345c2b4fec30d12e1e1a6ee153a80af101e32 (patch) | |
| tree | 0ca95b58b0e3f3ee15c948ce97bdcfde5c8869ed /include/linux | |
| parent | f583f4924d669d36de677e0cc2422ee95203d444 (diff) | |
| download | op-kernel-dev-2c2345c2b4fec30d12e1e1a6ee153a80af101e32.zip op-kernel-dev-2c2345c2b4fec30d12e1e1a6ee153a80af101e32.tar.gz | |
[PATCH] Document bi_sector and sector_t
Signed-Off-By: Roger Gammans <rgammans@computer-surgery.co.uk>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 3 | ||||
| -rw-r--r-- | 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 711c321..092dbd0 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 406d4ae..750f085 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 */ |
