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Sun, 5 Mar 2023 03:06:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A577EC433EF; Sun, 5 Mar 2023 03:06:19 +0000 (UTC) From: Sasha Levin To: stable-commits@vger.kernel.org, snitzer@kernel.org Date: Sat, 4 Mar 2023 22:06:17 -0500 Message-Id: <20230305030617.1741444-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Subject: [dm-devel] Patch "dm cache: add cond_resched() to various workqueue loops" has been added to the 6.1-stable tree X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dm-devel@redhat.com, Alasdair Kergon Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This is a note to let you know that I've just added the patch titled dm cache: add cond_resched() to various workqueue loops to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: dm-cache-add-cond_resched-to-various-workqueue-loops.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. commit dde7c1533ed3411af3c77fa4ee1d500f2a45d49c Author: Mike Snitzer Date: Thu Feb 16 15:31:08 2023 -0500 dm cache: add cond_resched() to various workqueue loops [ Upstream commit 76227f6dc805e9e960128bcc6276647361e0827c ] Otherwise on resource constrained systems these workqueues may be too greedy. Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 5e92fac90b675..17fde3e5a1f7b 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1805,6 +1805,7 @@ static void process_deferred_bios(struct work_struct *ws) else commit_needed = process_bio(cache, bio) || commit_needed; + cond_resched(); } if (commit_needed) @@ -1827,6 +1828,7 @@ static void requeue_deferred_bios(struct cache *cache) while ((bio = bio_list_pop(&bios))) { bio->bi_status = BLK_STS_DM_REQUEUE; bio_endio(bio); + cond_resched(); } } @@ -1867,6 +1869,8 @@ static void check_migrations(struct work_struct *ws) r = mg_start(cache, op, NULL); if (r) break; + + cond_resched(); } } -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel