On Fri, Jun 04, 2010 at 12:13:16AM +0300, Adrian Hunter wrote: > SD/MMC cards provide an erase operation that is too inefficient to > allow file systems to use it, however it is still useful for > userspace tools because it is still 10 - 100 times faster than > writing zeroes. Allow the MMC block driver to provide its own > BLKDISCARD implementation for this purpose. That's no good reason. Almost all current SSD TRIM implementations have the same issue, that's why filesustems require the -o discard option to enabled it. In addition I've not actually seen any numbers from you on a current kernel. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
