Raid0 only sets max_discard_sectors, but does not force alignment of discard requests. Discard request will be broken up into chunk-sized REQ_DISCARD by blkdev_issue_discard(), but if the sector is not chunk-aligned, each REQ_DISCARD to raid0 will all remain unaligned and raid0 will ned to split them all. This patch will prevent splitting of REQ_DISCARD requests. -eivind-- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html