On Wed, Dec 19 2012 at 7:11pm -0500, Martin K. Petersen <martin.petersen@xxxxxxxxxx> wrote: > >>>>> "Milan" == Milan Broz <mbroz@xxxxxxxxxx> writes: > > Milan> dm-crypt: never use write same > > Milan> Ciphertext device is not compatible with WRITE SAME, disable it > Milan> for all dmcrypt devices. > > Milan> Signed-off-by: Milan Broz <mbroz@xxxxxxxxxx> > > Acked-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> I've developed more comprehensive WRITE SAME support for DM. It can be used in conjunction with Milan's patch (which enables Milan's patch to go in too and be more easily tagged for v3.7 stable). Anyway, my changes are available in the 'dm-write-same' branch of my github tree: git://github.com/snitm/linux.git See the top 5 commits: https://github.com/snitm/linux/commits/dm-write-same (topmost needs to be folded, I'll do that when posting to dm-devel in reply to this mail) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel