diff options
| author | Jens Axboe <axboe@suse.de> | 2002-10-27 16:49:35 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2002-10-27 16:49:35 -0800 |
| commit | d50059ecf078224b00b0b341173fd35dbbd0eea3 (patch) | |
| tree | 345dadaeb939be146b74853c2135ff4e09f92489 /include/linux | |
| parent | 1b59d3cb089a2d3bb25ce1a2354bd1a0f794e8c5 (diff) | |
[PATCH] end_io bouncing
o Split blk_queue_bounce() into a slow and fast path. The fast path is
inlined, only if we actually need to check the bio for possible
bounces (and bounce) do we enter __blk_queue_bounce() slow path.
o Fix a nasty bug that could cause corruption for file systems not
using PAGE_CACHE_SIZE blok size! We were not correctly setting the
'to' bv_offset correctly.
o Add BIO_BOUNCE flag. Later patches will use this for debug checking.
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 1 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 93ac8216aae4..d5decec17fe7 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -101,6 +101,7 @@ struct bio { #define BIO_EOF 2 /* out-out-bounds error */ #define BIO_SEG_VALID 3 /* nr_hw_seg valid */ #define BIO_CLONED 4 /* doesn't own data */ +#define BIO_BOUNCED 5 /* bio is a bounce bio */ #define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag))) /* diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 42e81a4a0cab..6437522be832 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -268,7 +268,7 @@ extern unsigned long blk_max_low_pfn, blk_max_pfn; #define BLK_BOUNCE_ISA (ISA_DMA_THRESHOLD) extern int init_emergency_isa_pool(void); -void blk_queue_bounce(request_queue_t *q, struct bio **bio); +inline void blk_queue_bounce(request_queue_t *q, struct bio **bio); #define rq_for_each_bio(bio, rq) \ if ((rq->bio)) \ |