summaryrefslogtreecommitdiff
path: root/block
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-09 03:27:31 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-09 03:27:31 +0300
commitcd764695b67386a81964f68e9c66efd9f13f4d29 (patch)
tree504e961ab6bad164c41f4b9c1ff00c0ce7f645ee /block
parent97d61b8e3aef163a75f80f4762794c154572293d (diff)
parentffda8c7dc492e2170bb263f7c56f286992ceb54b (diff)
downloadlinux-cd764695b67386a81964f68e9c66efd9f13f4d29.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (45 commits) [SCSI] qla2xxx: Update version number to 8.03.00-k1. [SCSI] qla2xxx: Add ISP81XX support. [SCSI] qla2xxx: Use proper request/response queues with MQ instantiations. [SCSI] qla2xxx: Correct MQ-chain information retrieval during a firmware dump. [SCSI] qla2xxx: Collapse EFT/FCE copy procedures during a firmware dump. [SCSI] qla2xxx: Don't pollute kernel logs with ZIO/RIO status messages. [SCSI] qla2xxx: Don't fallback to interrupt-polling during re-initialization with MSI-X enabled. [SCSI] qla2xxx: Remove support for reading/writing HW-event-log. [SCSI] cxgb3i: add missing include [SCSI] scsi_lib: fix DID_RESET status problems [SCSI] fc transport: restore missing dev_loss_tmo callback to LLDD [SCSI] aha152x_cs: Fix regression that keeps driver from using shared interrupts [SCSI] sd: Correctly handle 6-byte commands with DIX [SCSI] sd: DIF: Fix tagging on platforms with signed char [SCSI] sd: DIF: Show app tag on error [SCSI] Fix error handling for DIF/DIX [SCSI] scsi_lib: don't decrement busy counters when inserting commands [SCSI] libsas: fix test for negative unsigned and typos [SCSI] a2091, gvp11: kill warn_unused_result warnings [SCSI] fusion: Move a dereference below a NULL test ... Fixed up trivial conflict due to moving the async part of sd_probe around in the async probes vs using dev_set_name() in naming.
Diffstat (limited to 'block')
-rw-r--r--block/blk-map.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/block/blk-map.c b/block/blk-map.c
index 2990447f45e9..f103729b462f 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -42,7 +42,7 @@ static int __blk_rq_unmap_user(struct bio *bio)
static int __blk_rq_map_user(struct request_queue *q, struct request *rq,
struct rq_map_data *map_data, void __user *ubuf,
- unsigned int len, int null_mapped, gfp_t gfp_mask)
+ unsigned int len, gfp_t gfp_mask)
{
unsigned long uaddr;
struct bio *bio, *orig_bio;
@@ -63,7 +63,7 @@ static int __blk_rq_map_user(struct request_queue *q, struct request *rq,
if (IS_ERR(bio))
return PTR_ERR(bio);
- if (null_mapped)
+ if (map_data && map_data->null_mapped)
bio->bi_flags |= (1 << BIO_NULL_MAPPED);
orig_bio = bio;
@@ -114,17 +114,15 @@ int blk_rq_map_user(struct request_queue *q, struct request *rq,
{
unsigned long bytes_read = 0;
struct bio *bio = NULL;
- int ret, null_mapped = 0;
+ int ret;
if (len > (q->max_hw_sectors << 9))
return -EINVAL;
if (!len)
return -EINVAL;
- if (!ubuf) {
- if (!map_data || rq_data_dir(rq) != READ)
- return -EINVAL;
- null_mapped = 1;
- }
+
+ if (!ubuf && (!map_data || !map_data->null_mapped))
+ return -EINVAL;
while (bytes_read != len) {
unsigned long map_len, end, start;
@@ -143,13 +141,16 @@ int blk_rq_map_user(struct request_queue *q, struct request *rq,
map_len -= PAGE_SIZE;
ret = __blk_rq_map_user(q, rq, map_data, ubuf, map_len,
- null_mapped, gfp_mask);
+ gfp_mask);
if (ret < 0)
goto unmap_rq;
if (!bio)
bio = rq->bio;
bytes_read += ret;
ubuf += ret;
+
+ if (map_data)
+ map_data->offset += ret;
}
if (!bio_flagged(bio, BIO_USER_MAPPED))