From: Allison Henderson <allison.henderson@oracle.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v3 18/30] xfsprogs: extent transaction reservations for parent attributes
Date: Wed, 26 Sep 2018 03:23:21 -0700 [thread overview]
Message-ID: <1537957413-10630-19-git-send-email-allison.henderson@oracle.com> (raw)
In-Reply-To: <1537957413-10630-1-git-send-email-allison.henderson@oracle.com>
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 <dchinner@redhat.com>
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
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 be3a3bf..d00dd0a 100644
--- a/libxfs/xfs_format.h
+++ b/libxfs/xfs_format.h
@@ -550,6 +550,11 @@ 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 4ecf7c2..3f37a8b 100644
--- a/libxfs/xfs_trans_resv.c
+++ b/libxfs/xfs_trans_resv.c
@@ -774,29 +774,30 @@ 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;
@@ -818,15 +819,77 @@ 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 4 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;
@@ -858,6 +921,8 @@ 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 7241ab2..0197d9e 100644
--- a/libxfs/xfs_trans_resv.h
+++ b/libxfs/xfs_trans_resv.h
@@ -93,5 +93,6 @@ 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
next prev parent reply other threads:[~2018-09-26 16:38 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-26 10:23 [PATCH v3 00/30] xfsprogs: parent pointers v2 Allison Henderson
2018-09-26 10:23 ` [PATCH v3 01/30] xfsprogs: Move xfs_attr.h to libxfs Allison Henderson
2018-09-26 10:23 ` [PATCH v3 02/30] xfsprogs: Add helper function xfs_attr_try_sf_addname Allison Henderson
2018-09-26 10:23 ` [PATCH v3 03/30] xfsprogs: Add attibute set and helper functions Allison Henderson
2018-09-26 10:23 ` [PATCH v3 04/30] xfsprogs: Add attibute remove " Allison Henderson
2018-09-26 10:23 ` [PATCH v3 05/30] xfsprogs: Add trans toggle to attr routines Allison Henderson
2018-09-26 10:23 ` [PATCH v3 06/30] xfsprogs: Set up infastructure for deferred attribute operations Allison Henderson
2018-09-26 10:23 ` [PATCH v3 07/30] xfsprogs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2018-09-26 10:23 ` [PATCH v3 08/30] xfsprogs: Add xfs_has_attr and subroutines Allison Henderson
2018-09-26 10:23 ` [PATCH v3 09/30] xfsprogs: Add attr context to log item Allison Henderson
2018-09-26 10:23 ` [PATCH v3 10/30] xfsprogs: Roll delayed attr operations by returning EAGAIN Allison Henderson
2018-09-26 10:23 ` [PATCH v3 11/30] xfsprogs: Remove roll_trans boolean Allison Henderson
2018-09-26 10:23 ` [PATCH v3 12/30] xfsprogs: Remove all strlen calls in all xfs_attr_* functions for attr names Allison Henderson
2018-09-26 10:23 ` [PATCH v3 13/30] xfsprogs: get directory offset when adding directory name Allison Henderson
2018-09-26 10:23 ` [PATCH v3 14/30] xfsprogs: get directory offset when removing " Allison Henderson
2018-09-26 10:23 ` [PATCH v3 15/30] xfsprogs: get directory offset when replacing a " Allison Henderson
2018-09-26 10:23 ` [PATCH v3 16/30] xfsprogs: add parent pointer support to attribute code Allison Henderson
2018-09-26 10:23 ` [PATCH v3 17/30] xfsprogs: define parent pointer xattr format Allison Henderson
2018-09-26 10:23 ` Allison Henderson [this message]
2018-09-26 10:23 ` [PATCH v3 19/30] xfsprogs: parent pointer attribute creation Allison Henderson
2018-09-26 10:23 ` [PATCH v3 20/30] xfsprogs: Add the parent pointer support to the superblock version 5 Allison Henderson
2018-09-26 10:23 ` [PATCH v3 21/30] xfsprogs: Add helper function xfs_attr_list_context_init Allison Henderson
2018-09-26 10:23 ` [PATCH v3 22/30] xfsprogs: Add parent pointer ioctl Allison Henderson
2018-09-26 10:23 ` [PATCH v3 23/30] xfs_io: Add delayed attributes error tag Allison Henderson
2018-09-26 10:23 ` [PATCH v3 24/30] xfsprogs: Add parent pointer flag to cmd Allison Henderson
2018-09-26 10:23 ` [PATCH v3 25/30] xfsprogs: Add log item printing for ATTRI and ATTRD Allison Henderson
2018-09-26 10:23 ` [PATCH v3 26/30] xfsprogs: Add xfs_verify_pptr Allison Henderson
2018-09-26 10:23 ` [PATCH v3 27/30] xfsprogs: Add parent pointers to recreated inodes Allison Henderson
2018-09-26 10:23 ` [PATCH v3 28/30] xfsprogs: Add parent pointers during protofile creation Allison Henderson
2018-09-26 10:23 ` [PATCH v3 29/30] xfsprogs: implement the upper half of parent pointers Allison Henderson
2018-09-26 10:23 ` [PATCH v3 30/30] xfsprogs: Add i, n and f flags to parent command Allison Henderson
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