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author | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
commit | 9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch) | |
tree | 8d104ec2a459346b99413b0b77421ca7b9936c1a /block/blk-map.c | |
parent | ca44d6e60f9de26281fda203f58b570e1748c015 (diff) | |
parent | 45e3e1935e2857c54783291107d33323b3ef33c8 (diff) | |
download | op-kernel-dev-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.zip op-kernel-dev-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.tar.gz |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/scsi/fcoe/fcoe.c
net/core/drop_monitor.c
net/core/net-traces.c
Diffstat (limited to 'block/blk-map.c')
-rw-r--r-- | block/blk-map.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/block/blk-map.c b/block/blk-map.c index f103729..9083cf0 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -20,11 +20,10 @@ int blk_rq_append_bio(struct request_queue *q, struct request *rq, rq->biotail->bi_next = bio; rq->biotail = bio; - rq->data_len += bio->bi_size; + rq->__data_len += bio->bi_size; } return 0; } -EXPORT_SYMBOL(blk_rq_append_bio); static int __blk_rq_unmap_user(struct bio *bio) { @@ -116,7 +115,7 @@ int blk_rq_map_user(struct request_queue *q, struct request *rq, struct bio *bio = NULL; int ret; - if (len > (q->max_hw_sectors << 9)) + if (len > (queue_max_hw_sectors(q) << 9)) return -EINVAL; if (!len) return -EINVAL; @@ -156,7 +155,7 @@ int blk_rq_map_user(struct request_queue *q, struct request *rq, if (!bio_flagged(bio, BIO_USER_MAPPED)) rq->cmd_flags |= REQ_COPY_USER; - rq->buffer = rq->data = NULL; + rq->buffer = NULL; return 0; unmap_rq: blk_rq_unmap_user(bio); @@ -235,7 +234,7 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq, blk_queue_bounce(q, &bio); bio_get(bio); blk_rq_bio_prep(q, rq, bio); - rq->buffer = rq->data = NULL; + rq->buffer = NULL; return 0; } EXPORT_SYMBOL(blk_rq_map_user_iov); @@ -282,7 +281,8 @@ EXPORT_SYMBOL(blk_rq_unmap_user); * * Description: * Data will be mapped directly if possible. Otherwise a bounce - * buffer is used. + * buffer is used. Can be called multple times to append multple + * buffers. */ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf, unsigned int len, gfp_t gfp_mask) @@ -290,8 +290,9 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf, int reading = rq_data_dir(rq) == READ; int do_copy = 0; struct bio *bio; + int ret; - if (len > (q->max_hw_sectors << 9)) + if (len > (queue_max_hw_sectors(q) << 9)) return -EINVAL; if (!len || !kbuf) return -EINVAL; @@ -311,9 +312,15 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf, if (do_copy) rq->cmd_flags |= REQ_COPY_USER; - blk_rq_bio_prep(q, rq, bio); + ret = blk_rq_append_bio(q, rq, bio); + if (unlikely(ret)) { + /* request is too big */ + bio_put(bio); + return ret; + } + blk_queue_bounce(q, &rq->bio); - rq->buffer = rq->data = NULL; + rq->buffer = NULL; return 0; } EXPORT_SYMBOL(blk_rq_map_kern); |