From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) (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 B72B928CF77 for ; Fri, 1 Aug 2025 23:47:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.145.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754092078; cv=none; b=uYojQYlQKK2tnHPbSSj5m9cMSMmUdg13tGt2wOjvzQdmQKlMB8ykvnI+PAMfgxLWT2FX22W848DIE+ZIROm5ih5+yfzm2qWo0rEGkE78pDDhhjccGMeLpdtf3MX/cRJieGUDmai9N1HZpY0zlCpfQktwHHGvna8Aw2/kC49Rt5I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754092078; c=relaxed/simple; bh=gdIVjT3vlKOt+2mbfWTWwWZ2gPoA7XxoHfplCpsaon8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=PeW47uvzkOzCWTukJVcLEu6Ag60TFZKuWnpGDl8PLjkSl2TV8KWH6uZB1gB+MuPCKqJ8fIh/Lr96LSFSbWNfLRH+SNsBIBNtP53BQP+UyhLhZoa10TXwZUE/9WsK9JzMsTqxSUmXDRFKhS/GYQXwNl/ADmm7zS6/XoGlbBDhKWs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=meta.com; spf=pass smtp.mailfrom=meta.com; dkim=pass (2048-bit key) header.d=meta.com header.i=@meta.com header.b=dl1NAjHo; arc=none smtp.client-ip=67.231.145.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=meta.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=meta.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=meta.com header.i=@meta.com header.b="dl1NAjHo" Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 571MqFEK027978 for ; Fri, 1 Aug 2025 16:47:56 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=meta.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=s2048-2025-q2; bh=1SMXkSebdaxUaoNdomo0qGyDMDQR8jUQzMvUjgNXeBc=; b=dl1NAjHoKtdf 40azB8cH8aKrpu4U3nB5u/zuNbF0DRTB8fjdNMKIwt1sD9/ZeCMQdBAP4GcG5Ym+ x/9j7HeJROiIgrlrGoEyeqLQTcJN+g/S+Yd0S518B8oKpx4uxfMxAoIhY71F4jvx 5hbH220NfU28MPv8DuCuEmRnOZOWM+ZueLSTdESDWlH8u1I0dcFU4ItUKAJAGhT5 vCbHMj9VZvn6pZ9R4I3+Pj+Eajbkc9/9bELORqhwDRn4hOxJagchN/iVX0DIDNQI z0b/tI4dP7rTs2d6YCdGfQVRnhjHtYNd5854I1HhNYrOKnmPOQTioiEpvV/b8rX6 n9yiGf6ycg== Received: from maileast.thefacebook.com ([163.114.135.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 489286t1ts-5 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 01 Aug 2025 16:47:55 -0700 (PDT) Received: from twshared31684.07.ash9.facebook.com (2620:10d:c0a8:fe::f072) by mail.thefacebook.com (2620:10d:c0a9:6f::237c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.17; Fri, 1 Aug 2025 23:47:50 +0000 Received: by devbig197.nha3.facebook.com (Postfix, from userid 544533) id B2F063105EF; Fri, 1 Aug 2025 16:47:36 -0700 (PDT) From: Keith Busch To: , , CC: , , , , Keith Busch Subject: [PATCH 3/7] block: simplify direct io validity check Date: Fri, 1 Aug 2025 16:47:32 -0700 Message-ID: <20250801234736.1913170-4-kbusch@meta.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20250801234736.1913170-1-kbusch@meta.com> References: <20250801234736.1913170-1-kbusch@meta.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODAxMDE5MyBTYWx0ZWRfXyGqNAfOijI1C 5vdLn1EX4OPEOuCEhFn9NVEmfl8br2YC5VV4Bza3opbURuvHXUYnC7TWXgWs9j+PABVEH3inSkL pPIMxAG4C+kUOuyy2LpJL45n9wGUgZnuOz0q8YQMZ7lkV6vJn0xQgsiDKMn1qgP+MOvGRJFDaWf VhMp3Pa1QHVj0YUmQSQANNDNhySNAONEctHwbSXRd89mtIBsajwbf4+uj/TJm42OFTdMkgmBwi5 S5EdJBruxkzGbDYCsWo2GCyALZvyklLBje2I417kjPL+CO8RxJawN5T5rm+wxCi2ItkroWBnS80 nlSNBTtxYSodu9A5XEldEIFC83iXRz8LdI9Ys+NDe87ezrTCiz/9mSP1DAk/q92DYniBKUIkLJ7 Y/sKEcOqeugBe8K85y4rLxzlYGljwsYXiyp4PSzkTrOdXKdNHEJpaUQLl9qqtJahpgrE4XMy X-Authority-Analysis: v=2.4 cv=ANL1oDcN c=1 sm=1 tr=0 ts=688d522b cx=c_pps a=MfjaFnPeirRr97d5FC5oHw==:117 a=MfjaFnPeirRr97d5FC5oHw==:17 a=2OwXVqhp2XgA:10 a=VwQbUJbxAAAA:8 a=IZBY3vBkjIs1pqmLj1YA:9 X-Proofpoint-GUID: wTpSlYIjMKQ9lB-rvebafxG7lchU4TWf X-Proofpoint-ORIG-GUID: wTpSlYIjMKQ9lB-rvebafxG7lchU4TWf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-01_08,2025-08-01_01,2025-03-28_01 From: Keith Busch The block layer checks all the segments for validity later, so no need for an early check. Just reduce it to a simple position and total length and defer the segment checks to the block layer. Signed-off-by: Keith Busch --- block/fops.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/fops.c b/block/fops.c index 82451ac8ff25d..820902cf10730 100644 --- a/block/fops.c +++ b/block/fops.c @@ -38,8 +38,8 @@ static blk_opf_t dio_bio_write_op(struct kiocb *iocb) static bool blkdev_dio_invalid(struct block_device *bdev, struct kiocb *= iocb, struct iov_iter *iter) { - return iocb->ki_pos & (bdev_logical_block_size(bdev) - 1) || - !bdev_iter_is_aligned(bdev, iter); + return (iocb->ki_pos | iov_iter_count(iter)) & + (bdev_logical_block_size(bdev) - 1); } =20 #define DIO_INLINE_BIO_VECS 4 --=20 2.47.3