From patchwork Tue Aug 15 19:01:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 714080 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1FC7AC001E0 for ; Tue, 15 Aug 2023 19:03:49 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 2ACBA83E; Tue, 15 Aug 2023 21:02:58 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 2ACBA83E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692126228; bh=Uo9RpRrq+tqE4aFp6WNuHO0ow2NiLxasnDduIp+UAqw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=YpzfsFmVroy50H8Ib+0jkP2IgVKmdChQIaXatJgqyqldW0rsT/8f3LXBH5PU9UrSE hwwLdyf0qq822s84VOMRHBoSvRU68kE+Mw2E+zw+plT+XrbyN0xmolThdnkl5QH2dN cY5ReeRpxTiz2emWuck72S5uGWZTsxOyuVxAoqbA= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 41E70F80588; Tue, 15 Aug 2023 21:02:08 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 58A6FF80588; Tue, 15 Aug 2023 21:02:07 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 1B766F80579; Tue, 15 Aug 2023 21:02:03 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) (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 alsa1.perex.cz (Postfix) with ESMTPS id 3576EF8016D for ; Tue, 15 Aug 2023 21:01:47 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 3576EF8016D Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=U0X1AgYf; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=+TU5ZXj5 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 54254211C2; Tue, 15 Aug 2023 19:01:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692126107; h=from:from:reply-to: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=jL1kZwcY6dMGheLY8VT1W4i0RrpIBAIOY7mmAx3IYPo=; b=U0X1AgYfraeXpvSANmhqdI7y2OkQ2UGIwcVOzfcm/4PdYBALruX+lRci8AHZZJT5xfnCiw Rq/leeZlmplImx0Gfb4IuCNEf1HduS/gLJSTJV3ws+ITLCn5hyV0hdxvDEnSgXDCertqKd RDAGtXlAcYho/A2L3BMbJrOlxtTgXeM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692126107; h=from:from:reply-to: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=jL1kZwcY6dMGheLY8VT1W4i0RrpIBAIOY7mmAx3IYPo=; b=+TU5ZXj5De1Bwf8O1Mw0fmUPyyUx62ZWZTkuT1FEmBwy51vPvohgM1zBdg9+Njv67ADUf6 3Jg43Eu1NUlI1FAA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 32F511390C; Tue, 15 Aug 2023 19:01:47 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 0PykC5vL22QTVAAAMHmgww (envelope-from ); Tue, 15 Aug 2023 19:01:47 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, Takashi Iwai , Alexander Viro Subject: [PATCH v2 01/25] iov_iter: Export import_ubuf() Date: Tue, 15 Aug 2023 21:01:12 +0200 Message-Id: <20230815190136.8987-2-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230815190136.8987-1-tiwai@suse.de> References: <20230815190136.8987-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: IMCCN2QZIONWTFJY2JJH6QYOXCRVXC7N X-Message-ID-Hash: IMCCN2QZIONWTFJY2JJH6QYOXCRVXC7N X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Export import_ubuf() to be used in sound subsystem for generic memory handling as Linus suggested. It's used for constructing an iov_iter of a single segment user-space copy for PCM data. Cc: Alexander Viro Link: https://lore.kernel.org/r/CAHk-=wh-mUL6mp4chAc6E_UjwpPLyCPRCJK+iB4ZMD2BqjwGHA@mail.gmail.com Signed-off-by: Takashi Iwai --- lib/iov_iter.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/iov_iter.c b/lib/iov_iter.c index e4dc809d1075..3743bbcbbb89 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1544,6 +1544,7 @@ int import_ubuf(int rw, void __user *buf, size_t len, struct iov_iter *i) iov_iter_ubuf(i, rw, buf, len); return 0; } +EXPORT_SYMBOL_GPL(import_ubuf); /** * iov_iter_restore() - Restore a &struct iov_iter to the same state as when