diff options
| author | Bryan Holty <lgeek@frontiernet.net> | 2006-03-22 06:35:39 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-01 09:16:55 -0500 |
| commit | f52359622fa25783cf1a08c0772048d2ed1a7434 (patch) | |
| tree | b9b06d8b289d6c9bdb401282497079c4a5b2792c | |
| parent | 9f434d4f84a235f6b61aec6e691d6b07bc46fc24 (diff) | |
[SCSI] scsi_lib.c: properly count the number of pages in scsi_req_map_sg()
The calculation of nr_pages in scsi_req_map_sg() doesn't account for
the fact that the first page could have an offset that pushes the end
of the buffer onto a new page.
Signed-off-by: Bryan Holty <lgeek@frontiernet.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 764a8b375ead..faee4757c03a 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -367,7 +367,7 @@ static int scsi_req_map_sg(struct request *rq, struct scatterlist *sgl, int nsegs, unsigned bufflen, gfp_t gfp) { struct request_queue *q = rq->q; - int nr_pages = (bufflen + PAGE_SIZE - 1) >> PAGE_SHIFT; + int nr_pages = (bufflen + sgl[0].offset + PAGE_SIZE - 1) >> PAGE_SHIFT; unsigned int data_len = 0, len, bytes, off; struct page *page; struct bio *bio = NULL; |