From: Heinz Mauelshagen Date: Tue, 29 Nov 2016 21:37:30 +0000 (+0100) Subject: dm raid: fix discard support regression X-Git-Tag: v4.10-rc1~125^2~7 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=11e2968478edc07a75ee1efb45011b3033c621c2;p=karo-tx-linux.git dm raid: fix discard support regression Commit ecbfb9f118 ("dm raid: add raid level takeover support") moved the configure_discard_support() call from raid_ctr() to raid_preresume(). Enabling/disabling discard _must_ happen during table load (through the .ctr hook). Fix this regression by moving the configure_discard_support() call back to raid_ctr(). Fixes: ecbfb9f118 ("dm raid: add raid level takeover support") Cc: stable@vger.kernel.org # 4.8+ Signed-off-by: Heinz Mauelshagen Signed-off-by: Mike Snitzer --- diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 9d5c6bb9e35b..b49b12242651 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -2999,6 +2999,9 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv) } } + /* Disable/enable discard support on raid set. */ + configure_discard_support(rs); + mddev_unlock(&rs->md); return 0; @@ -3585,12 +3588,6 @@ static int raid_preresume(struct dm_target *ti) if (test_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags)) rs_update_sbs(rs); - /* - * Disable/enable discard support on raid set after any - * conversion, because devices can have been added - */ - configure_discard_support(rs); - /* Load the bitmap from disk unless raid0 */ r = __load_dirty_region_bitmap(rs); if (r)