On 17 Sep 12 12:40, Dan Magenheimer wrote: > Hi Larry -- > > Sorry I missed seeing you and missed this discussion at Linuxcon! > > > based on transcendent memory (which I am somewhat familiar > > with, having built something based upon it which can be used either > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > as contiguous memory or as clean cache) might work, but > > That reminds me... I never saw this code posted on linux-mm > or lkml or anywhere else. Since this is another interesting > use of tmem/cleancache/frontswap, it might be good to get > your work into the kernel or at least into some other public > tree. Is your code post-able? (re original thread: > http://www.spinics.net/lists/linux-mm/msg24785.html ) This was done on a 3.0 base (the tmem/zcache was from 3.1) a while back. Due to the fact that 1) although some benchmarks improved, very large file system writes suffered performance degradation (measured with lmdd), 2) it appeared that supporting FAT (or other filesystems where blocksize != pagesize) would be difficult and 3) in many use cases we couldn't fill the carved out FMEM regions with enough cleancache (so memory was still being "wasted") as well as the fact that there was some functionality we hadn't yet implemented (mainly supporting non-compressed FMEM) and that the code would need to be ported forward to our 3.4 source base, management decided to put this project on the back burner. Therefore I don't believe I have any relevant code to post (unless the project is revived and ported to a current source base). Larry -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>