From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp2130.oracle.com ([156.151.31.86]:55994 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932118AbeFJFKP (ORCPT ); Sun, 10 Jun 2018 01:10:15 -0400 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w5A57Fh6072196 for ; Sun, 10 Jun 2018 05:10:15 GMT Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp2130.oracle.com with ESMTP id 2jg6b19w87-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 10 Jun 2018 05:10:14 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w5A5AD9a004583 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 10 Jun 2018 05:10:14 GMT Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w5A5ADIo001511 for ; Sun, 10 Jun 2018 05:10:13 GMT From: Allison Henderson Subject: [PATCH v2 14/27] xfsprogs: extent transaction reservations for parent attributes Date: Sat, 9 Jun 2018 22:07:39 -0700 Message-Id: <1528607272-11122-15-git-send-email-allison.henderson@oracle.com> In-Reply-To: <1528607272-11122-1-git-send-email-allison.henderson@oracle.com> References: <1528607272-11122-1-git-send-email-allison.henderson@oracle.com> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org We need to add, remove or modify parent pointer attributes during create/link/unlink/rename operations atomically with the dirents in the parent directories being modified. This means they need to be modified in the same transaction as the parent directories, and so we need to add the required space for the attribute modifications to the transaction reservations. [achender: rebased, added xfs_sb_version_hasparent stub] Signed-off-by: Dave Chinner Signed-off-by: Allison Henderson --- libxfs/xfs_format.h | 5 +++ libxfs/xfs_trans_resv.c | 111 ++++++++++++++++++++++++++++++++++++++---------- libxfs/xfs_trans_resv.h | 1 + 3 files changed, 94 insertions(+), 23 deletions(-) diff --git a/libxfs/xfs_format.h b/libxfs/xfs_format.h index 4854893..de8b14a 100644 --- a/libxfs/xfs_format.h +++ b/libxfs/xfs_format.h @@ -559,6 +559,11 @@ static inline bool xfs_sb_version_hasreflink(struct xfs_sb *sbp) (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_REFLINK); } +static inline bool xfs_sb_version_hasparent(struct xfs_sb *sbp) +{ + return false; /* We'll enable this at the end of the set */ +} + /* * end of superblock version macros */ diff --git a/libxfs/xfs_trans_resv.c b/libxfs/xfs_trans_resv.c index 3cebb90..7b7d98f 100644 --- a/libxfs/xfs_trans_resv.c +++ b/libxfs/xfs_trans_resv.c @@ -788,29 +788,30 @@ xfs_calc_sb_reservation( return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); } +/* + * Namespace reservations. + * + * These get tricky when parent pointers are enabled as we have attribute + * modifications occurring from within these transactions. Rather than confuse + * each of these reservation calculations with the conditional attribute + * reservations, add them here in a clear and concise manner. This assumes that + * the attribute reservations have already been calculated. + * + * Note that we only include the static attribute reservation here; the runtime + * reservation will have to be modified by the size of the attributes being + * added/removed/modified. See the comments on the attribute reservation + * calculations for more details. + * + * Note for rename: rename will vastly overestimate requirements. This will be + * addressed later when modifications are made to ensure parent attribute + * modifications can be done atomically with the rename operation. + */ void -xfs_trans_resv_calc( +xfs_calc_namespace_reservations( struct xfs_mount *mp, struct xfs_trans_resv *resp) { - /* - * The following transactions are logged in physical format and - * require a permanent reservation on space. - */ - resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); - if (xfs_sb_version_hasreflink(&mp->m_sb)) - resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK; - else - resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; - resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; - - resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); - if (xfs_sb_version_hasreflink(&mp->m_sb)) - resp->tr_itruncate.tr_logcount = - XFS_ITRUNCATE_LOG_COUNT_REFLINK; - else - resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; - resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + ASSERT(resp->tr_attrsetm.tr_logres > 0); resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; @@ -832,15 +833,77 @@ xfs_trans_resv_calc( resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); + resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; + resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + xfs_calc_parent_ptr_reservations(mp); +} + +void xfs_calc_parent_ptr_reservations(struct xfs_mount *mp) +{ + struct xfs_trans_resv *resp = M_RES(mp); + + /* Calculate extra space needed for parent pointer attributes */ + if (!xfs_sb_version_hasparent(&mp->m_sb)) + return; + + /* rename can add/remove/modify 2 parent attributes */ + resp->tr_rename.tr_logres += 4 * max(resp->tr_attrsetm.tr_logres, + resp->tr_attrrm.tr_logres); + resp->tr_rename.tr_logcount += 4 * max(resp->tr_attrsetm.tr_logcount, + resp->tr_attrrm.tr_logcount); + + /* create will add 1 parent attribute */ + resp->tr_create.tr_logres += resp->tr_attrsetm.tr_logres; + resp->tr_create.tr_logcount += resp->tr_attrsetm.tr_logcount; + + /* mkdir will add 1 parent attribute */ + resp->tr_mkdir.tr_logres += resp->tr_attrsetm.tr_logres; + resp->tr_mkdir.tr_logcount += resp->tr_attrsetm.tr_logcount; + + /* link will add 1 parent attribute */ + resp->tr_link.tr_logres += resp->tr_attrsetm.tr_logres; + resp->tr_link.tr_logcount += resp->tr_attrsetm.tr_logcount; + + /* symlink will add 1 parent attribute */ + resp->tr_symlink.tr_logres += resp->tr_attrsetm.tr_logres; + resp->tr_symlink.tr_logcount += resp->tr_attrsetm.tr_logcount; + + /* remove will remove 1 parent attribute */ + resp->tr_remove.tr_logres += resp->tr_attrrm.tr_logres; + resp->tr_remove.tr_logcount += resp->tr_attrrm.tr_logcount; +} + +void +xfs_trans_resv_calc( + struct xfs_mount *mp, + struct xfs_trans_resv *resp) +{ + /* + * The following transactions are logged in physical format and + * require a permanent reservation on space. + */ + resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); + if (xfs_sb_version_hasreflink(&mp->m_sb)) + resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK; + else + resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; + resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); + if (xfs_sb_version_hasreflink(&mp->m_sb)) + resp->tr_itruncate.tr_logcount = + XFS_ITRUNCATE_LOG_COUNT_REFLINK; + else + resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; + resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + resp->tr_create_tmpfile.tr_logres = xfs_calc_create_tmpfile_reservation(mp); resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT; resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES; - resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); - resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; - resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; - resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; @@ -872,6 +935,8 @@ xfs_trans_resv_calc( resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + xfs_calc_namespace_reservations(mp, resp); + /* * The following transactions are logged in logical format with * a default log count. diff --git a/libxfs/xfs_trans_resv.h b/libxfs/xfs_trans_resv.h index b7e5357..c7190d6 100644 --- a/libxfs/xfs_trans_resv.h +++ b/libxfs/xfs_trans_resv.h @@ -105,5 +105,6 @@ struct xfs_trans_resv { void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp); uint xfs_allocfree_log_count(struct xfs_mount *mp, uint num_ops); +void xfs_calc_parent_ptr_reservations(struct xfs_mount *mp); #endif /* __XFS_TRANS_RESV_H__ */ -- 2.7.4