Commit 82b3ab03 authored Oct 27, 2015 by Dinesh K Garg Committed by Kyle Yan Jun 29, 2016

md: Enable discard option for dm-req-crypt based devices



dm-req-crypt based devices are capable of supporting discard option.
DM layer by default does not enable discard option for DM devices.
Since underlying device supports discard option, mapped target should
also allow it.

Change-Id: Ia540a814c3dcd91f573d1f25d637107a48309a58
Signed-off-by: Dinesh K Garg <dineshg@codeaurora.org>

parent 566b0758

drivers/md/dm-req-crypt.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -1271,10 +1271,11 @@ static int req_crypt_ctr(struct dm_target ti, unsigned int argc, char *argv)
		BUG_ON(!req_scatterlist_pool);

		/*
		* If underlying device supports flush, mapped target should
		* also allow it
		* If underlying device supports flush/discard, mapped target
		* should also allow it
		*/
		ti->num_flush_bios = 1;
		ti->num_discard_bios = 1;

		err = 0;
		DMINFO("%s: Mapping block_device %s to dm-req-crypt ok!\n",