From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [80.241.56.171]) (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 861941991AA; Wed, 13 Mar 2024 17:03:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710349412; cv=none; b=jZNQbjyKO6pRF57moZfmtko1tfFf/oETjMlksY5irOEsLu+bxr5fNtkTpfEC/are046OKlC7ABBdore2PQ1gNXjJjtC//ZJK9dKl6K6Y5fMnKC7HALkOOw46aVcUOO6THYT8k0Y0P9EfMYEUW6rp+WJaNyXHQQm3zJTs4sc3UAY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710349412; c=relaxed/simple; bh=RpGDv7xjt1Tn0NAFmnUJ4dRChi0PW0zUu2AGhx/ey2I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CzhHdJsNnl8c/nZ/MsTh7N7lX/K6Ndgf37fELRahci5woO2FL0VrRgRaKpCDAWaUFuo3V6G5UKaQHU8NCi7EwuiNDh3ECyfCsmrA54rQrNAFavMDuzhgCa7/CQxPHrl9bk0W4r4qA3sTCEaBXEZuelQX7JG3UHRcWPqSWCgt0fM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pankajraghav.com; spf=pass smtp.mailfrom=pankajraghav.com; dkim=pass (2048-bit key) header.d=pankajraghav.com header.i=@pankajraghav.com header.b=L+OtKexa; arc=none smtp.client-ip=80.241.56.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pankajraghav.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pankajraghav.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=pankajraghav.com header.i=@pankajraghav.com header.b="L+OtKexa" Received: from smtp202.mailbox.org (smtp202.mailbox.org [IPv6:2001:67c:2050:b231:465::202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 4Tvxfl1Ftrz9sqV; Wed, 13 Mar 2024 18:03:27 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pankajraghav.com; s=MBO0001; t=1710349407; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F3Xg5bE7lOUEiWrLgvJkawBGempm7FqinU/8gfujPB8=; b=L+OtKexa8lscvnV+tP6Qwfgscep0OokKJI+6VWJsVSvNCdYGHpjfa+oUx+M4CnU+flHItA Z7biTY7xoXAJWfjX8BUdzqizkXIbR083jNK0fC/LUb0rJ1ZBAH9+6gYFAQuNpHE9vI7/wL zbWzflaswuuxg1W3On8MRJaz9vHDwPBmneBEUngNZBU/bneNO4W9RdsLF/SuGWBcq4rFBL EDyHiJ9W22Go64+oMoK0yj/4z70enqNwtiC/3W/sgqAhc0pY2QxwX3uOcaTcmNTYsts4WV zcm5NCF1rZ91I8S3vS/p0psodGFJnSjvTeYE+LRQIBxvVmMN5SOOT2jfF38FPw== From: "Pankaj Raghav (Samsung)" To: willy@infradead.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: gost.dev@samsung.com, chandan.babu@oracle.com, hare@suse.de, mcgrof@kernel.org, djwong@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, david@fromorbit.com, akpm@linux-foundation.org, Pankaj Raghav Subject: [PATCH v3 07/11] mm: do not split a folio if it has minimum folio order requirement Date: Wed, 13 Mar 2024 18:02:49 +0100 Message-ID: <20240313170253.2324812-8-kernel@pankajraghav.com> In-Reply-To: <20240313170253.2324812-1-kernel@pankajraghav.com> References: <20240313170253.2324812-1-kernel@pankajraghav.com> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4Tvxfl1Ftrz9sqV From: Pankaj Raghav As we don't have a way to split a folio to a any given lower folio order yet, avoid splitting the folio in split_huge_page_to_list() if it has a minimum folio order requirement. Signed-off-by: Pankaj Raghav Signed-off-by: Luis Chamberlain Reviewed-by: Hannes Reinecke --- mm/huge_memory.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 81fd1ba57088..6ec3417638a1 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -3030,6 +3030,19 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) goto out; } + /* + * Do not split if mapping has minimum folio order + * requirement. + * + * XXX: Once we have support for splitting to any lower + * folio order, then it could be split based on the + * min_folio_order. + */ + if (mapping_min_folio_order(mapping)) { + ret = -EAGAIN; + goto out; + } + gfp = current_gfp_context(mapping_gfp_mask(mapping) & GFP_RECLAIM_MASK); -- 2.43.0