On 2011-05-05 09:12, Lukas Czerner wrote: > Currently we return -EOPNOTSUPP in blkdev_issue_discard() if any of the > bio fails due to underlying device not supporting discard request. > However, if the device is for example dm device composed of devices > which some of them support discard and some of them does not, it is ok > for some bios to fail with EOPNOTSUPP, but it does not mean that discard > is not supported at all. > > This commit removes the check for bios failed with EOPNOTSUPP and change > blkdev_issue_discard() to return operation not supported if and only if > the device does not actually supports it, not just part of the device as > some bios might indicate. > > This change also fixes problem with BLKDISCARD ioctl() which now works > correctly on such dm devices. Applied, thanks. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
