I'm not sure how to do this for ext[34]. The sb_issue_discard() function issues its requests as a soft barrier, because for naïve callers it needs to ensure that the discard happens _before_ any subsequent writes to the same sectors (if they get reallocated immediately). But ext[34] can probably do better than that, and submit the discard requests _without_ barriers of their own. If someone with a bit more clue does it, that is. -- David Woodhouse Open Source Technology Centre David.Woodhouse@xxxxxxxxx Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
