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[SG] Update drivers to use sg helpers

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Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe
2007-10-22 21:19:53 +02:00
parent 78c2f0b8c2
commit 45711f1af6
82 changed files with 278 additions and 275 deletions
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13
drivers/scsi/scsi_lib.c
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@@ -295,7 +295,7 @@ static int scsi_req_map_sg(struct request *rq, struct scatterlist *sgl,
int i, err, nr_vecs = 0;
for_each_sg(sgl, sg, nsegs, i) {
page = sg->page;
page = sg_page(sg);
off = sg->offset;
len = sg->length;
data_len += len;
@@ -764,7 +764,7 @@ struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_mask)
if (unlikely(!sgl))
goto enomem;
memset(sgl, 0, sizeof(*sgl) * sgp->size);
sg_init_table(sgl, sgp->size);
/*
* first loop through, set initial index and return value
@@ -780,6 +780,13 @@ struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_mask)
if (prev)
sg_chain(prev, SCSI_MAX_SG_SEGMENTS, sgl);
/*
* if we have nothing left, mark the last segment as
* end-of-list
*/
if (!left)
sg_mark_end(sgl, this);
/*
* don't allow subsequent mempool allocs to sleep, it would
* violate the mempool principle.
@@ -2353,7 +2360,7 @@ void *scsi_kmap_atomic_sg(struct scatterlist *sgl, int sg_count,
*offset = *offset - len_complete + sg->offset;
/* Assumption: contiguous pages can be accessed as "page + i" */
page = nth_page(sg->page, (*offset >> PAGE_SHIFT));
page = nth_page(sg_page(sg), (*offset >> PAGE_SHIFT));
*offset &= ~PAGE_MASK;
/* Bytes in this sg-entry from *offset to the end of the page */