>>>>> "Christoph" == Christoph Hellwig <hch@xxxxxx> writes: Christoph> Blk-mq drivers usually preallocate their S/G list as part of Christoph> the request, but if we want to support the very large S/G Christoph> lists currently supported by the SCSI code that would tie up Christoph> a lot of memory in the preallocated request pool. Add Christoph> support to the scatterlist code so that it can initialize a Christoph> S/G list that uses a preallocated first chunks and Christoph> dynamically allocated additional chunks. That way the Christoph> scsi-mq code can preallocate a first page worth of S/G Christoph> entries as part of the request, and dynamically extend the Christoph> S/G list when needed. Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
