Thomas Glanzmann <thomas@xxxxxxxxxxxx> writes: > Hello Ted, > >> 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. > > that sounds good because it wouldn't only target the most used > filesystem but every other filesystem that uses the interface as well. > Do you think that a tunable or configurable patch has a chance to hit > upstream as well? > > Thomas I could imagine a device mapper target that eats TRIM commands and writes out zeroes instead. That should be easy to maintain outside or inside the upstream kernel source. MfG Goswin -- 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