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authorChristoph Hellwig <hch@lst.de>2018-12-13 18:17:02 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-12-19 07:13:12 +0300
commit2a3d4eb8e228061c09d5ca8bf39e7f00c2091213 (patch)
tree867ce9fbb2ecee876580bb728ef3affb3e1b41d3 /drivers/usb/storage/scsiglue.c
parent4dd4130a722fb046e941010cf5576aed252bb58a (diff)
downloadlinux-2a3d4eb8e228061c09d5ca8bf39e7f00c2091213.tar.xz
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 'drivers/usb/storage/scsiglue.c')
-rw-r--r--drivers/usb/storage/scsiglue.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index e227bb5b794f..fde2e71a6ade 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -639,13 +639,6 @@ static const struct scsi_host_template usb_stor_host_template = {
*/
.max_sectors = 240,
- /*
- * merge commands... this seems to help performance, but
- * periodically someone should test to see which setting is more
- * optimal.
- */
- .use_clustering = 1,
-
/* emulated HBA */
.emulated = 1,