From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8865C433EF for ; Tue, 16 Nov 2021 21:45:42 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 032AA61BC1; Tue, 16 Nov 2021 21:45:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 032AA61BC1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.sourceforge.net Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.94.2) (envelope-from ) id 1mn6Gp-0005pS-2K; Tue, 16 Nov 2021 21:45:40 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mn6Gf-0005pF-U1 for linux-f2fs-devel@lists.sourceforge.net; Tue, 16 Nov 2021 21:45:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Im1vU2VEzK1WYL6sOXd0+urd1JBcBBgwiZSveXWHIyM=; b=jXCKgSrugLYslM/1sejPCNQS2f WHBhnQSsGwcLZ26Z4kc6/mAS96Yev+XRo76jqtMnvG2ZpaLwtZzWL9hDZhiWMO+dy/p1rBZwe6Gqy lbx6fcykgbxQfPBPTfBilDu4obtDe1LUKhxwd1AG7N8bmIulJpxzQ3LMJI6jXCegMoKg=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Im1vU2VEzK1WYL6sOXd0+urd1JBcBBgwiZSveXWHIyM=; b=R7WKC1vFfCyxwx11sr/yKhV091 rA49P4SUKwFH1ncLdshk4+t914unMLGNoG++ZSWiP9fLug0Ap1KJB/YyYgLtBP3pX0AZVkDtREMQE rsXfQRVJ9ppFefoAjPPREyNRTySjLQxRCKYZE0wCLrAYC7d/HulkLFRspIkoRQpeorxk=; Received: from mail.kernel.org ([198.145.29.99]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) id 1mn6Gd-00FLo2-62 for linux-f2fs-devel@lists.sourceforge.net; Tue, 16 Nov 2021 21:45:30 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id E36F76322D; Tue, 16 Nov 2021 21:45:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637099120; bh=eZWcKYxkCa8oij/qLUPoWTMsDGU6CU4uG/UMTp01tJg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZrrXSWhFp7t2q5s2eLV7wdLMLZYVqtNqOs+vFGhSm2MlScTc5pp2nx/BCK5KHz0zP +SspiQXWF5mNZA9hqFv8rrhEeOu8OM0HDoFikLo+V4yHxxBNc+D5CRVlJulqWdAagc 4hnhwhxM2FEJChAj0hpO6SrOrPFhHmbTQEuhzmqHNfNVRPvE2Uo22KRAO14aLFNtVd Pm827ju5YYwg+Z8daoxZoCvu6kh2vTgqxuEJCI/tHErLNu+jkP9AsX3Neln7iebWNv 7tUJt/ujj+nxE0wStELNMF14zmDy5+lbcvbbUcUqXnayF/kWbmikaFpacknbWuG8I2 GidRYYthb/R4w== From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Date: Tue, 16 Nov 2021 13:45:09 -0800 Message-Id: <20211116214510.2934905-5-jaegeuk@kernel.org> X-Mailer: git-send-email 2.34.0.rc1.387.gb447b232ab-goog In-Reply-To: <20211116214510.2934905-1-jaegeuk@kernel.org> References: <20211116214510.2934905-1-jaegeuk@kernel.org> MIME-Version: 1.0 X-Headers-End: 1mn6Gd-00FLo2-62 Subject: [f2fs-dev] [PATCH 5/6] f2fs: implement iomap operations X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jaegeuk Kim , Eric Biggers Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Eric Biggers Implement 'struct iomap_ops' for f2fs, in preparation for making f2fs use iomap for direct I/O. Note that this may be used for other things besides direct I/O in the future; however, for now I've only tested it for direct I/O. Signed-off-by: Eric Biggers Signed-off-by: Jaegeuk Kim --- fs/f2fs/Kconfig | 1 + fs/f2fs/data.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++ fs/f2fs/f2fs.h | 1 + 3 files changed, 60 insertions(+) diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig index 7eea3cfd894d..f46a7339d6cf 100644 --- a/fs/f2fs/Kconfig +++ b/fs/f2fs/Kconfig @@ -7,6 +7,7 @@ config F2FS_FS select CRYPTO_CRC32 select F2FS_FS_XATTR if FS_ENCRYPTION select FS_ENCRYPTION_ALGS if FS_ENCRYPTION + select FS_IOMAP select LZ4_COMPRESS if F2FS_FS_LZ4 select LZ4_DECOMPRESS if F2FS_FS_LZ4 select LZ4HC_COMPRESS if F2FS_FS_LZ4HC diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 7ac1a39fcad2..43b3ca7cabe0 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "f2fs.h" #include "node.h" @@ -4236,3 +4237,60 @@ void f2fs_destroy_bio_entry_cache(void) { kmem_cache_destroy(bio_entry_slab); } + +static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, + unsigned int flags, struct iomap *iomap, + struct iomap *srcmap) +{ + struct f2fs_map_blocks map = {}; + pgoff_t next_pgofs = 0; + int err; + + map.m_lblk = bytes_to_blks(inode, offset); + map.m_len = bytes_to_blks(inode, offset + length - 1) - map.m_lblk + 1; + map.m_next_pgofs = &next_pgofs; + map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint); + if (flags & IOMAP_WRITE) + map.m_may_create = true; + + err = f2fs_map_blocks(inode, &map, flags & IOMAP_WRITE, + F2FS_GET_BLOCK_DIO); + if (err) + return err; + + iomap->offset = blks_to_bytes(inode, map.m_lblk); + + if (map.m_flags & (F2FS_MAP_MAPPED | F2FS_MAP_UNWRITTEN)) { + iomap->length = blks_to_bytes(inode, map.m_len); + if (map.m_flags & F2FS_MAP_MAPPED) { + iomap->type = IOMAP_MAPPED; + iomap->flags |= IOMAP_F_MERGED; + } else { + iomap->type = IOMAP_UNWRITTEN; + } + if (WARN_ON_ONCE(!__is_valid_data_blkaddr(map.m_pblk))) + return -EINVAL; + iomap->addr = blks_to_bytes(inode, map.m_pblk); + + if (WARN_ON_ONCE(f2fs_is_multi_device(F2FS_I_SB(inode)))) + return -EINVAL; + iomap->bdev = inode->i_sb->s_bdev; + } else { + iomap->length = blks_to_bytes(inode, next_pgofs) - + iomap->offset; + iomap->type = IOMAP_HOLE; + iomap->addr = IOMAP_NULL_ADDR; + } + + if (map.m_flags & F2FS_MAP_NEW) + iomap->flags |= IOMAP_F_NEW; + if ((inode->i_state & I_DIRTY_DATASYNC) || + offset + length > i_size_read(inode)) + iomap->flags |= IOMAP_F_DIRTY; + + return 0; +} + +const struct iomap_ops f2fs_iomap_ops = { + .iomap_begin = f2fs_iomap_begin, +}; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 14bea669f87e..0d199e8f2c1d 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -3654,6 +3654,7 @@ int f2fs_init_post_read_processing(void); void f2fs_destroy_post_read_processing(void); int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi); void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi); +extern const struct iomap_ops f2fs_iomap_ops; /* * gc.c -- 2.34.0.rc1.387.gb447b232ab-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel