diff options
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 52 |
1 files changed, 5 insertions, 47 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 7d52a11e1b61..c289991ffaed 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -53,49 +53,16 @@ #endif static struct kmem_cache *scsi_sense_cache; -static struct kmem_cache *scsi_sense_isadma_cache; static DEFINE_MUTEX(scsi_sense_cache_mutex); static void scsi_mq_uninit_cmd(struct scsi_cmnd *cmd); -static inline struct kmem_cache * -scsi_select_sense_cache(bool unchecked_isa_dma) -{ - return unchecked_isa_dma ? scsi_sense_isadma_cache : scsi_sense_cache; -} - -static void scsi_free_sense_buffer(bool unchecked_isa_dma, - unsigned char *sense_buffer) -{ - kmem_cache_free(scsi_select_sense_cache(unchecked_isa_dma), - sense_buffer); -} - -static unsigned char *scsi_alloc_sense_buffer(bool unchecked_isa_dma, - gfp_t gfp_mask, int numa_node) -{ - return kmem_cache_alloc_node(scsi_select_sense_cache(unchecked_isa_dma), - gfp_mask, numa_node); -} - int scsi_init_sense_cache(struct Scsi_Host *shost) { - struct kmem_cache *cache; int ret = 0; mutex_lock(&scsi_sense_cache_mutex); - cache = scsi_select_sense_cache(shost->unchecked_isa_dma); - if (cache) - goto exit; - - if (shost->unchecked_isa_dma) { - scsi_sense_isadma_cache = - kmem_cache_create("scsi_sense_cache(DMA)", - SCSI_SENSE_BUFFERSIZE, 0, - SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, NULL); - if (!scsi_sense_isadma_cache) - ret = -ENOMEM; - } else { + if (!scsi_sense_cache) { scsi_sense_cache = kmem_cache_create_usercopy("scsi_sense_cache", SCSI_SENSE_BUFFERSIZE, 0, SLAB_HWCACHE_ALIGN, @@ -103,7 +70,6 @@ int scsi_init_sense_cache(struct Scsi_Host *shost) if (!scsi_sense_cache) ret = -ENOMEM; } - exit: mutex_unlock(&scsi_sense_cache_mutex); return ret; } @@ -1748,15 +1714,12 @@ static int scsi_mq_init_request(struct blk_mq_tag_set *set, struct request *rq, unsigned int hctx_idx, unsigned int numa_node) { struct Scsi_Host *shost = set->driver_data; - const bool unchecked_isa_dma = shost->unchecked_isa_dma; struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); struct scatterlist *sg; int ret = 0; - if (unchecked_isa_dma) - cmd->flags |= SCMD_UNCHECKED_ISA_DMA; - cmd->sense_buffer = scsi_alloc_sense_buffer(unchecked_isa_dma, - GFP_KERNEL, numa_node); + cmd->sense_buffer = + kmem_cache_alloc_node(scsi_sense_cache, GFP_KERNEL, numa_node); if (!cmd->sense_buffer) return -ENOMEM; cmd->req.sense = cmd->sense_buffer; @@ -1770,8 +1733,7 @@ static int scsi_mq_init_request(struct blk_mq_tag_set *set, struct request *rq, if (shost->hostt->init_cmd_priv) { ret = shost->hostt->init_cmd_priv(shost, cmd); if (ret < 0) - scsi_free_sense_buffer(unchecked_isa_dma, - cmd->sense_buffer); + kmem_cache_free(scsi_sense_cache, cmd->sense_buffer); } return ret; @@ -1785,8 +1747,7 @@ static void scsi_mq_exit_request(struct blk_mq_tag_set *set, struct request *rq, if (shost->hostt->exit_cmd_priv) shost->hostt->exit_cmd_priv(shost, cmd); - scsi_free_sense_buffer(cmd->flags & SCMD_UNCHECKED_ISA_DMA, - cmd->sense_buffer); + kmem_cache_free(scsi_sense_cache, cmd->sense_buffer); } static int scsi_map_queues(struct blk_mq_tag_set *set) @@ -1821,8 +1782,6 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q) dma_max_mapping_size(dev) >> SECTOR_SHIFT); } blk_queue_max_hw_sectors(q, shost->max_sectors); - if (shost->unchecked_isa_dma) - blk_queue_bounce_limit(q, BLK_BOUNCE_ISA); blk_queue_segment_boundary(q, shost->dma_boundary); dma_set_seg_boundary(dev, shost->dma_boundary); @@ -1988,7 +1947,6 @@ EXPORT_SYMBOL(scsi_unblock_requests); void scsi_exit_queue(void) { kmem_cache_destroy(scsi_sense_cache); - kmem_cache_destroy(scsi_sense_isadma_cache); } /** |