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authorChristoph Hellwig <hch@lst.de>2018-12-13 16:17:02 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2018-12-18 23:13:12 -0500
commit2a3d4eb8e228061c09d5ca8bf39e7f00c2091213 (patch)
tree867ce9fbb2ecee876580bb728ef3affb3e1b41d3 /include
parent4dd4130a722fb046e941010cf5576aed252bb58a (diff)
scsi: flip the default on use_clustering
Most SCSI drivers want to enable "clustering", that is merging of segments so that they might span more than a single page. Remove the ENABLE_CLUSTERING define, and require drivers to explicitly set DISABLE_CLUSTERING to disable this feature. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/libata.h2
-rw-r--r--include/scsi/scsi_host.h3
2 files changed, 1 insertions, 4 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 38c95d66ab12..68133842e6d7 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -135,7 +135,6 @@ enum {
ATA_SHT_EMULATED = 1,
ATA_SHT_THIS_ID = -1,
- ATA_SHT_USE_CLUSTERING = 1,
/* struct ata_taskfile flags */
ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
@@ -1360,7 +1359,6 @@ extern struct device_attribute *ata_common_sdev_attrs[];
.tag_alloc_policy = BLK_TAG_ALLOC_RR, \
.this_id = ATA_SHT_THIS_ID, \
.emulated = ATA_SHT_EMULATED, \
- .use_clustering = ATA_SHT_USE_CLUSTERING, \
.proc_name = drv_name, \
.slave_configure = ata_scsi_slave_config, \
.slave_destroy = ata_scsi_slave_destroy, \
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 5ea06d310a25..7dc534c794dc 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -44,8 +44,7 @@ struct blk_queue_tags;
#define MODE_INITIATOR 0x01
#define MODE_TARGET 0x02
-#define DISABLE_CLUSTERING 0
-#define ENABLE_CLUSTERING 1
+#define DISABLE_CLUSTERING (-1)
struct scsi_host_template {
struct module *module;