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 X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 518D2C38A2A for ; Fri, 8 May 2020 06:34:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FB67207DD for ; Fri, 8 May 2020 06:34:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dT3CZ07F" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727110AbgEHGem (ORCPT ); Fri, 8 May 2020 02:34:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727094AbgEHGem (ORCPT ); Fri, 8 May 2020 02:34:42 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A5D2C05BD43 for ; Thu, 7 May 2020 23:34:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; 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; bh=wn5CPAe9dbEELVBKBZoZ65bYWI/DRKSTsJjv2Kmabts=; b=dT3CZ07FHvdqQBEr2NnKcS0Yjv Kz3GVsp3gVamDRMrjVnb0UTrb4VgF5vx044RfWig+j5tcnojcl3ueUbtKUnpec0hoUK3vroro4xUg xNPxRHVSbYeQ3F+oVGGuosWtz5b1eYMCS0xsv7GBC6N/sqkRs2MJwUzvE7wTeAocT/rfcR5mVibQT PQzSqYcXei6n6VXs1Njpk+1FVs3YO+W4TtQ6TP44R7P92wusrPNvOKq48utD8VhWj98cDK19QL/Oj vxgopmdrxfID97vIybaeOJH43VMz4h9M+9cqqLvVyWbOMuzdEW2ru6EpHEg+zfYVgua9pBpxOiz9i UnIYZTzA==; Received: from [2001:4bb8:180:9d3f:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWwan-0002vV-VB; Fri, 08 May 2020 06:34:42 +0000 From: Christoph Hellwig To: linux-xfs@vger.kernel.org Cc: Brian Foster Subject: [PATCH 07/12] xfs: remove xfs_iread Date: Fri, 8 May 2020 08:34:18 +0200 Message-Id: <20200508063423.482370-8-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200508063423.482370-1-hch@lst.de> References: <20200508063423.482370-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org There is not much point in the xfs_iread function, as it has a single caller and not a whole lot of code. Move it into the only caller, and trim down the overdocumentation to just documenting the important "why" instead of a lot of redundant "what". Signed-off-by: Christoph Hellwig Reviewed-by: Brian Foster --- fs/xfs/libxfs/xfs_inode_buf.c | 73 ----------------------------------- fs/xfs/libxfs/xfs_inode_buf.h | 2 - fs/xfs/xfs_icache.c | 33 +++++++++++++++- 3 files changed, 32 insertions(+), 76 deletions(-) diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index 329534eebbdcc..05f939adea944 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -614,79 +614,6 @@ xfs_dinode_calc_crc( dip->di_crc = xfs_end_cksum(crc); } -/* - * Read the disk inode attributes into the in-core inode structure. - * - * For version 5 superblocks, if we are initialising a new inode and we are not - * utilising the XFS_MOUNT_IKEEP inode cluster mode, we can simple build the new - * inode core with a random generation number. If we are keeping inodes around, - * we need to read the inode cluster to get the existing generation number off - * disk. Further, if we are using version 4 superblocks (i.e. v1/v2 inode - * format) then log recovery is dependent on the di_flushiter field being - * initialised from the current on-disk value and hence we must also read the - * inode off disk. - */ -int -xfs_iread( - xfs_mount_t *mp, - xfs_trans_t *tp, - xfs_inode_t *ip, - uint iget_flags) -{ - xfs_buf_t *bp; - xfs_dinode_t *dip; - int error; - - /* - * Fill in the location information in the in-core inode. - */ - error = xfs_imap(mp, tp, ip->i_ino, &ip->i_imap, iget_flags); - if (error) - return error; - - /* shortcut IO on inode allocation if possible */ - if ((iget_flags & XFS_IGET_CREATE) && - xfs_sb_version_has_v3inode(&mp->m_sb) && - !(mp->m_flags & XFS_MOUNT_IKEEP)) { - VFS_I(ip)->i_generation = prandom_u32(); - return 0; - } - - /* - * Get pointers to the on-disk inode and the buffer containing it. - */ - error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0); - if (error) - return error; - - error = xfs_inode_from_disk(ip, dip); - if (error) - goto out_brelse; - - /* - * Mark the buffer containing the inode as something to keep - * around for a while. This helps to keep recently accessed - * meta-data in-core longer. - */ - xfs_buf_set_ref(bp, XFS_INO_REF); - - /* - * Use xfs_trans_brelse() to release the buffer containing the on-disk - * inode, because it was acquired with xfs_trans_read_buf() in - * xfs_imap_to_bp() above. If tp is NULL, this is just a normal - * brelse(). If we're within a transaction, then xfs_trans_brelse() - * will only release the buffer if it is not dirty within the - * transaction. It will be OK to release the buffer in this case, - * because inodes on disk are never destroyed and we will be locking the - * new in-core inode before putting it in the cache where other - * processes can find it. Thus we don't have to worry about the inode - * being changed just because we released the buffer. - */ - out_brelse: - xfs_trans_brelse(tp, bp); - return error; -} - /* * Validate di_extsize hint. * diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h index 0fbb99224ec73..e4cbcaf62a32b 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.h +++ b/fs/xfs/libxfs/xfs_inode_buf.h @@ -49,8 +49,6 @@ struct xfs_imap { int xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *, struct xfs_imap *, struct xfs_dinode **, struct xfs_buf **, uint); -int xfs_iread(struct xfs_mount *, struct xfs_trans *, - struct xfs_inode *, uint); void xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *); void xfs_inode_to_disk(struct xfs_inode *ip, struct xfs_dinode *to, xfs_lsn_t lsn); diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 922a29032e374..af5748f5d9271 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -22,6 +22,7 @@ #include "xfs_dquot_item.h" #include "xfs_dquot.h" #include "xfs_reflink.h" +#include "xfs_ialloc.h" #include @@ -508,10 +509,40 @@ xfs_iget_cache_miss( if (!ip) return -ENOMEM; - error = xfs_iread(mp, tp, ip, flags); + error = xfs_imap(mp, tp, ip->i_ino, &ip->i_imap, flags); if (error) goto out_destroy; + /* + * For version 5 superblocks, if we are initialising a new inode and we + * are not utilising the XFS_MOUNT_IKEEP inode cluster mode, we can + * simply build the new inode core with a random generation number. + * + * For version 4 (and older) superblocks, log recovery is dependent on + * the di_flushiter field being initialised from the current on-disk + * value and hence we must also read the inode off disk even when + * initializing new inodes. + */ + if (xfs_sb_version_has_v3inode(&mp->m_sb) && + (flags & XFS_IGET_CREATE) && !(mp->m_flags & XFS_MOUNT_IKEEP)) { + VFS_I(ip)->i_generation = prandom_u32(); + } else { + struct xfs_dinode *dip; + struct xfs_buf *bp; + + error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0); + if (error) + goto out_destroy; + + error = xfs_inode_from_disk(ip, dip); + if (!error) + xfs_buf_set_ref(bp, XFS_INO_REF); + xfs_trans_brelse(tp, bp); + + if (error) + goto out_destroy; + } + if (!xfs_inode_verify_forks(ip)) { error = -EFSCORRUPTED; goto out_destroy; -- 2.26.2