From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAA3E16C684 for ; Wed, 6 Nov 2024 00:59:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730854748; cv=none; b=nxwqZ0VoKr9d0UAqngpztZ65wlAZYDpXFA8f1BEZw3+/otWgCRERiFujCdRVU4c/EBAWLD4n7lfTV9DGKgdjChb/y2Q5wWxQm2Rm4GebDkUrWs/XflQFr+sk9dAu+U2D7YweOk4pYohhwMzRZALiDwsW+I7DzqDivqSgoALf68Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730854748; c=relaxed/simple; bh=R5wS1YJutdxCJz8WDUeRa8m5VyjvpEjE62TUotKhMJo=; h=Date:To:From:Subject:Message-Id; b=lhwwEBAO4Es8j0fRkzecNhM3WKyY+C7U4xNFdqnW41DlgV/bWJTG324yADJQX8EHNqACmKZRLuweefhAcoTqB6oDS6S+6TYXbCqz62qaIPgknbNxKwprOPL3edVo6tnezBCFGbnv7s9FRwKsk+xsdWZCXGKgQ0AB7OiDOYKtn5A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=X+8BW9KF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="X+8BW9KF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1310C4CECF; Wed, 6 Nov 2024 00:59:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1730854748; bh=R5wS1YJutdxCJz8WDUeRa8m5VyjvpEjE62TUotKhMJo=; h=Date:To:From:Subject:From; b=X+8BW9KFt+TysUJm/kunrLnXMYqgKShiXDg9pIBjYUCBUxKxkBv5BCfOb+B7QfVBC eJH3ajadsnY2WHm4pZeB/XegldM2Jj3f2oFrp2FMovm/I8x2MH8tNPAwm1tpOOIZOe zaQRrKgHIVv1T5QnXdTXbF/ukRGlVCspt3IzBcKk= Date: Tue, 05 Nov 2024 16:59:08 -0800 To: mm-commits@vger.kernel.org,yosryahmed@google.com,ying.huang@intel.com,willy@infradead.org,wajdi.k.feghali@intel.com,usamaarif642@gmail.com,shakeel.butt@linux.dev,ryan.roberts@arm.com,nphamcs@gmail.com,nanhai.zou@intel.com,hannes@cmpxchg.org,chengming.zhou@linux.dev,21cnbao@gmail.com,kanchana.p.sridhar@intel.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-zswap-rename-zswap_pool_get-to-zswap_pool_tryget.patch removed from -mm tree Message-Id: <20241106005908.B1310C4CECF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: zswap: rename zswap_pool_get() to zswap_pool_tryget() has been removed from the -mm tree. Its filename was mm-zswap-rename-zswap_pool_get-to-zswap_pool_tryget.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Kanchana P Sridhar Subject: mm: zswap: rename zswap_pool_get() to zswap_pool_tryget() Date: Mon, 30 Sep 2024 22:32:18 -0700 Modify the name of the existing zswap_pool_get() to zswap_pool_tryget() to be representative of the call it makes to percpu_ref_tryget(). A subsequent patch will introduce a new zswap_pool_get() that calls percpu_ref_get(). The intent behind this change is for higher level zswap API such as zswap_store() to call zswap_pool_tryget() to check upfront if the pool's refcount is "0" (which means it could be getting destroyed) and to handle this as an error condition. zswap_store() would proceed only if zswap_pool_tryget() returns success, and any additional pool refcounts that need to be obtained for compressing sub-pages in a large folio could simply call zswap_pool_get(). Link: https://lkml.kernel.org/r/20241001053222.6944-4-kanchana.p.sridhar@intel.com Signed-off-by: Kanchana P Sridhar Acked-by: Yosry Ahmed Reviewed-by: Chengming Zhou Acked-by: Johannes Weiner Reviewed-by: Nhat Pham Cc: "Huang, Ying" Cc: Matthew Wilcox Cc: Ryan Roberts Cc: Shakeel Butt Cc: Usama Arif Cc: Wajdi Feghali Cc: "Zou, Nanhai" Cc: Barry Song <21cnbao@gmail.com> Signed-off-by: Andrew Morton --- mm/zswap.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/mm/zswap.c~mm-zswap-rename-zswap_pool_get-to-zswap_pool_tryget +++ a/mm/zswap.c @@ -402,7 +402,7 @@ static void __zswap_pool_empty(struct pe spin_unlock_bh(&zswap_pools_lock); } -static int __must_check zswap_pool_get(struct zswap_pool *pool) +static int __must_check zswap_pool_tryget(struct zswap_pool *pool) { if (!pool) return 0; @@ -440,7 +440,7 @@ static struct zswap_pool *zswap_pool_cur rcu_read_lock(); pool = __zswap_pool_current(); - if (!zswap_pool_get(pool)) + if (!zswap_pool_tryget(pool)) pool = NULL; rcu_read_unlock(); @@ -461,7 +461,7 @@ static struct zswap_pool *zswap_pool_fin if (strcmp(zpool_get_type(pool->zpool), type)) continue; /* if we can't get it, it's about to be destroyed */ - if (!zswap_pool_get(pool)) + if (!zswap_pool_tryget(pool)) continue; return pool; } _ Patches currently in -mm which might be from kanchana.p.sridhar@intel.com are