On Thu, 2018-12-06 at 07:52 -0800, Christoph Hellwig wrote: +AD4 Most SCSI drivers want to enable +ACI-clustering+ACI, that is merging of +AD4 segments so that they might span more than a single page. Remove the +AD4 ENABLE+AF8-CLUSTERING define, and require drivers to explicitly set +AD4 DISABLE+AF8-CLUSTERING to disable this feature. All drivers not setting +AD4 use+AF8-clustering at all are switched to set DISABLE+AF8-CLUSTERING to keep +AD4 the current behavior. Was this patch produced manually or has it been generated with the help of a script? In the latter case it would help if that script would be included in the patch description. Additionally, this patch would be much easier to review if it would be split into two patches, one that adds .use+AF8-clustering +AD0 DISABLE+AF8-CLUSTERING from SCSI templates that implicitly disable clustering and a second patch that removes .use+AF8-clustering +AD0 ENABLE+AF8-CLUSTERING from all SCSI drivers. Thanks, Bart.