On Sun, May 24, 2009 at 07:39:33PM +0200, Thomas Glanzmann wrote: > Hello, > > > > tunable feature that zeroes our free data > > > wouldn't it be better if the VM's would just support the TRIM command? > > the resources available to me indicate that the TRIM command is a not > yet standarized command targeted at SSD disks to indicate free disk > space. Does ext3/4 trigger a block device layer call that could result > in a TRIM command? Yes, it does, sb_issue_discard(). So if you wanted to hook into this routine with a function which issued calls to zero out blocks, it would be easy to create a private patch. - Ted -- 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
