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authorFUJITA Tomonori <tomof@acm.org>2007-07-29 23:00:46 +0900
committerJames Bottomley <jejb@mulgrave.localdomain>2007-07-31 10:43:05 -0500
commit0c6a89ba640d28e1dcd7fd1a217d2cfb92ae4953 (patch)
treef222695dfb6def9299717dd23f729c15fdd96919 /block/bsg.c
parentdb47c2d8d98a76083a88ec53f44cc74c48dfd1e8 (diff)
downloadlinux-0c6a89ba640d28e1dcd7fd1a217d2cfb92ae4953.tar.gz
[SCSI] bsg: update sg_io_v4 structure
This updates sg_io_v4 structure (based on Doug's RFC, release 1.3). The major changes are: - add dout_resid field - increase tag size to 64 bits to comply with SAM-4 and SRP - add dout_iovec_count and din_iovec_count dout_iovec_count and din_iovec_count aren't supported now. I'm not sure whether they will be supported or not but they were added for the possible future changes. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'block/bsg.c')
-rw-r--r--block/bsg.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/block/bsg.c b/block/bsg.c
index d60eee54940..ed264682723 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -1,5 +1,5 @@
/*
- * bsg.c - block layer implementation of the sg v3 interface
+ * bsg.c - block layer implementation of the sg v4 interface
*
* Copyright (C) 2004 Jens Axboe <axboe@suse.de> SUSE Labs
* Copyright (C) 2004 Peter M. Jones <pjones@redhat.com>
@@ -421,7 +421,6 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
hdr->info = 0;
if (hdr->device_status || hdr->transport_status || hdr->driver_status)
hdr->info |= SG_INFO_CHECK;
- hdr->din_resid = rq->data_len;
hdr->response_len = 0;
if (rq->sense_len && hdr->response) {
@@ -437,9 +436,14 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
}
if (rq->next_rq) {
+ hdr->dout_resid = rq->data_len;
+ hdr->din_resid = rq->next_rq->data_len;
blk_rq_unmap_user(bidi_bio);
blk_put_request(rq->next_rq);
- }
+ } else if (rq_data_dir(rq) == READ)
+ hdr->din_resid = rq->data_len;
+ else
+ hdr->dout_resid = rq->data_len;
blk_rq_unmap_user(bio);
blk_put_request(rq);