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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-10-16 11:12:37 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2007-10-16 11:12:37 +0200 |
| commit | 0cde8d9510e242c73b2d68f9949cd3c456c863b4 (patch) | |
| tree | 12f2b2fb9de0db6b9293214fcbd790965195fd38 | |
| parent | use sg helper function in DMA mapping documentation (diff) | |
| download | linux-0cde8d9510e242c73b2d68f9949cd3c456c863b4.tar.xz linux-0cde8d9510e242c73b2d68f9949cd3c456c863b4.zip | |
scsi: simplify scsi_free_sgtable()
Just pass in the command, no point in passing in the scatterlist
and scatterlist pool index seperately.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/scsi_tgt_lib.c | 4 | ||||
| -rw-r--r-- | include/scsi/scsi_cmnd.h | 2 |
3 files changed, 8 insertions, 7 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 960f949b8f8f..7e1dcc57f115 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -741,13 +741,14 @@ struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_mask) EXPORT_SYMBOL(scsi_alloc_sgtable); -void scsi_free_sgtable(struct scatterlist *sgl, int index) +void scsi_free_sgtable(struct scsi_cmnd *cmd) { + struct scatterlist *sgl = cmd->request_buffer; struct scsi_host_sg_pool *sgp; - BUG_ON(index >= SG_MEMPOOL_NR); + BUG_ON(cmd->sglist_len >= SG_MEMPOOL_NR); - sgp = scsi_sg_pools + index; + sgp = scsi_sg_pools + cmd->sglist_len; mempool_free(sgl, sgp->pool); } @@ -773,7 +774,7 @@ EXPORT_SYMBOL(scsi_free_sgtable); static void scsi_release_buffers(struct scsi_cmnd *cmd) { if (cmd->use_sg) - scsi_free_sgtable(cmd->request_buffer, cmd->sglist_len); + scsi_free_sgtable(cmd); /* * Zero these out. They now point to freed memory, and it is diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c index 66c692ffa305..a91761c3645f 100644 --- a/drivers/scsi/scsi_tgt_lib.c +++ b/drivers/scsi/scsi_tgt_lib.c @@ -332,7 +332,7 @@ static void scsi_tgt_cmd_done(struct scsi_cmnd *cmd) scsi_tgt_uspace_send_status(cmd, tcmd->itn_id, tcmd->tag); if (cmd->request_buffer) - scsi_free_sgtable(cmd->request_buffer, cmd->sglist_len); + scsi_free_sgtable(cmd); queue_work(scsi_tgtd, &tcmd->work); } @@ -373,7 +373,7 @@ static int scsi_tgt_init_cmd(struct scsi_cmnd *cmd, gfp_t gfp_mask) } eprintk("cmd %p cnt %d\n", cmd, cmd->use_sg); - scsi_free_sgtable(cmd->request_buffer, cmd->sglist_len); + scsi_free_sgtable(cmd); return -EINVAL; } diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 3b0bb6680e62..a5439a4b8f97 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -129,7 +129,7 @@ extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count, extern void scsi_kunmap_atomic_sg(void *virt); extern struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *, gfp_t); -extern void scsi_free_sgtable(struct scatterlist *, int); +extern void scsi_free_sgtable(struct scsi_cmnd *); extern int scsi_dma_map(struct scsi_cmnd *cmd); extern void scsi_dma_unmap(struct scsi_cmnd *cmd); |