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| author | Mikulas Patocka <mpatocka@redhat.com> | 2008-08-15 10:20:02 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:03 +0200 |
| commit | 5df97b91b5d7ed426034fcc84cb6e7cf682b8838 (patch) | |
| tree | 727b9fb778f72d2b1ff44c007fb5209bacf67f4a /include/linux/bio.h | |
| parent | b8b3e16cfe6435d961f6aaebcfd52a1ff2a988c5 (diff) | |
| download | lwn-5df97b91b5d7ed426034fcc84cb6e7cf682b8838.tar.gz lwn-5df97b91b5d7ed426034fcc84cb6e7cf682b8838.zip | |
drop vmerge accounting
Remove hw_segments field from struct bio and struct request. Without virtual
merge accounting they have no purpose.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/bio.h')
| -rw-r--r-- | include/linux/bio.h | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 894d16ce0020..dfc3556d311c 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -77,21 +77,8 @@ struct bio { */ unsigned short bi_phys_segments; - /* Number of segments after physical and DMA remapping - * hardware coalescing is performed. - */ - unsigned short bi_hw_segments; - unsigned int bi_size; /* residual I/O count */ - /* - * To keep track of the max hw size, we account for the - * sizes of the first and last virtually mergeable segments - * in this bio - */ - unsigned int bi_hw_front_size; - unsigned int bi_hw_back_size; - unsigned int bi_max_vecs; /* max bvl_vecs we can hold */ struct bio_vec *bi_io_vec; /* the actual vec list */ @@ -113,7 +100,7 @@ struct bio { #define BIO_UPTODATE 0 /* ok after I/O completion */ #define BIO_RW_BLOCK 1 /* RW_AHEAD set, and read/write would block */ #define BIO_EOF 2 /* out-out-bounds error */ -#define BIO_SEG_VALID 3 /* nr_hw_seg valid */ +#define BIO_SEG_VALID 3 /* bi_phys_segments valid */ #define BIO_CLONED 4 /* doesn't own data */ #define BIO_BOUNCED 5 /* bio is a bounce bio */ #define BIO_USER_MAPPED 6 /* contains user pages */ @@ -324,7 +311,6 @@ extern void bio_free(struct bio *, struct bio_set *); extern void bio_endio(struct bio *, int); struct request_queue; extern int bio_phys_segments(struct request_queue *, struct bio *); -extern int bio_hw_segments(struct request_queue *, struct bio *); extern void __bio_clone(struct bio *, struct bio *); extern struct bio *bio_clone(struct bio *, gfp_t); |