From patchwork Fri Jul 22 07:12:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 12926032 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61535C2BBE7 for ; Fri, 22 Jul 2022 07:14:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234484AbiGVHOV (ORCPT ); Fri, 22 Jul 2022 03:14:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234386AbiGVHOJ (ORCPT ); Fri, 22 Jul 2022 03:14:09 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43E1F936BA; Fri, 22 Jul 2022 00:14:08 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E2D96B8275B; Fri, 22 Jul 2022 07:14:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4A6A9C341CB; Fri, 22 Jul 2022 07:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1658474045; bh=yNPRgSeWTnsQodx2HX1gpV+aMEKrajl9C8NqSSYb2uQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HHUHOmotxC+q834q8Lxhf9RUyvTzh8jXRI3uIl5diKurDCYRpkMt+ADLIhoDcbT/Q LRigaPp9+S0vQFNSylt1xXtI4iq7f/0LWYA2rN510ZRqrLVQ1lZ4/Xy5XL9GGSkb4s FMnaAQYwjSv9rm8kjbDt4f67E86JQs3W6C3yTxqu64u35nWlm+aazzBvpLXSuV6+s4 wwEJ56CezLq01exxlwB398T1NJCiN1ihPWVbFW5kpdCrXGzMtUTnOOai0o7AVHebmS TDyBfSIPvsVWq8BWxGThTMrrIEKr+VY+pZ0904xa1pwj9MLxC8SBE3lt5LMBDzvHwO mHtw/hDN52AXw== From: Eric Biggers To: linux-fsdevel@vger.kernel.org Cc: linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-api@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Keith Busch Subject: [PATCH v4 8/9] f2fs: support STATX_DIOALIGN Date: Fri, 22 Jul 2022 00:12:27 -0700 Message-Id: <20220722071228.146690-9-ebiggers@kernel.org> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220722071228.146690-1-ebiggers@kernel.org> References: <20220722071228.146690-1-ebiggers@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org From: Eric Biggers Add support for STATX_DIOALIGN to f2fs, so that direct I/O alignment restrictions are exposed to userspace in a generic way. Signed-off-by: Eric Biggers --- fs/f2fs/file.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 1b452bb75af29e..11d75aa3da185a 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -852,6 +852,21 @@ int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path, stat->btime.tv_nsec = fi->i_crtime.tv_nsec; } + /* + * Return the DIO alignment restrictions if requested. We only return + * this information when requested, since on encrypted files it might + * take a fair bit of work to get if the file wasn't opened recently. + */ + if ((request_mask & STATX_DIOALIGN) && S_ISREG(inode->i_mode)) { + unsigned int bsize = i_blocksize(inode); + + stat->result_mask |= STATX_DIOALIGN; + if (!f2fs_force_buffered_io(inode)) { + stat->dio_mem_align = bsize; + stat->dio_offset_align = bsize; + } + } + flags = fi->i_flags; if (flags & F2FS_COMPR_FL) stat->attributes |= STATX_ATTR_COMPRESSED;