#include "scsi_priv.h"
#include "scsi_logging.h"
+/*
+ * Size of integrity metadata is usually small, 1 inline sg should
+ * cover normal cases.
+ */
+#define SCSI_INLINE_PROT_SG_CNT 1
+
static struct kmem_cache *scsi_sdb_cache;
static struct kmem_cache *scsi_sense_cache;
static struct kmem_cache *scsi_sense_isadma_cache;
if (cmd->sdb.table.nents)
sg_free_table_chained(&cmd->sdb.table, SG_CHUNK_SIZE);
if (scsi_prot_sg_count(cmd))
- sg_free_table_chained(&cmd->prot_sdb->table, SG_CHUNK_SIZE);
+ sg_free_table_chained(&cmd->prot_sdb->table,
+ SCSI_INLINE_PROT_SG_CNT);
}
static void scsi_mq_uninit_cmd(struct scsi_cmnd *cmd)
if (sg_alloc_table_chained(&prot_sdb->table, ivecs,
prot_sdb->table.sgl,
- SG_CHUNK_SIZE)) {
+ SCSI_INLINE_PROT_SG_CNT)) {
ret = BLK_STS_RESOURCE;
goto out_free_sgtables;
}
sgl_size = scsi_mq_sgl_size(shost);
cmd_size = sizeof(struct scsi_cmnd) + shost->hostt->cmd_size + sgl_size;
if (scsi_host_get_prot(shost))
- cmd_size += sizeof(struct scsi_data_buffer) + sgl_size;
+ cmd_size += sizeof(struct scsi_data_buffer) +
+ sizeof(struct scatterlist) * SCSI_INLINE_PROT_SG_CNT;
memset(&shost->tag_set, 0, sizeof(shost->tag_set));
shost->tag_set.ops = &scsi_mq_ops;