Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753532AbcJCTX4 (ORCPT ); Mon, 3 Oct 2016 15:23:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58404 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753274AbcJCTXF (ORCPT ); Mon, 3 Oct 2016 15:23:05 -0400 From: Andy Grover To: gregkh@linuxfoundation.org, snitzer@redhat.com Cc: dm-devel@redhat.com, linux-kernel@vger.kernel.org Subject: [PATCH 8/9] dm: Generate uevents for thin targets Date: Mon, 3 Oct 2016 12:22:59 -0700 Message-Id: <1475522580-16723-9-git-send-email-agrover@redhat.com> In-Reply-To: <1475522580-16723-1-git-send-email-agrover@redhat.com> References: <1475522580-16723-1-git-send-email-agrover@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Mon, 03 Oct 2016 19:23:05 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1350 Lines: 38 Generate uevents when thin pool devices hit data or metadata low water marks, and when pool mode changes. Signed-off-by: Andy Grover --- drivers/md/dm-thin.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index d1c05c1..0778a2a 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1429,6 +1429,7 @@ static void check_low_water_mark(struct pool *pool, dm_block_t free_blocks) spin_lock_irqsave(&pool->lock, flags); pool->low_water_triggered = true; spin_unlock_irqrestore(&pool->lock, flags); + dm_uevent_add(pool->ti, KOBJ_CHANGE, "THIN_LOW_WATER_DATA"); dm_table_event(pool->ti->table); } } @@ -2397,6 +2398,7 @@ static enum pool_mode get_pool_mode(struct pool *pool) static void notify_of_pool_mode_change(struct pool *pool, const char *new_mode) { + dm_uevent_add(pool->ti, KOBJ_CHANGE, "THIN_POOL_MODE"); dm_table_event(pool->ti->table); DMINFO("%s: switching pool to %s mode", dm_device_name(pool->pool_md), new_mode); @@ -3095,6 +3097,7 @@ static void metadata_low_callback(void *context) DMWARN("%s: reached low water mark for metadata device: sending event.", dm_device_name(pool->pool_md)); + dm_uevent_add(pool->ti, KOBJ_CHANGE, "THIN_LOW_WATER_METADATA"); dm_table_event(pool->ti->table); } -- 2.7.4