From: Brian Foster <bfoster@redhat.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v2 08/15] xfs: automatic dfops inode relogging
Date: Wed, 1 Aug 2018 09:19:45 -0400 [thread overview]
Message-ID: <20180801131952.60250-9-bfoster@redhat.com> (raw)
In-Reply-To: <20180801131952.60250-1-bfoster@redhat.com>
Inodes that are held across deferred operations are explicitly
joined to the dfops structure to ensure appropriate relogging.
While inodes are currently joined explicitly, we can detect the
conditions that require relogging at dfops finish time by inspecting
the transaction item list for inodes with ili_lock_flags == 0.
Replace the xfs_defer_ijoin() infrastructure with such detection and
automatic relogging of held inodes. This eliminates the need for the
per-dfops inode list, replaced by an on-stack variant in
xfs_defer_trans_roll().
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/libxfs/xfs_attr.c | 9 -----
fs/xfs/libxfs/xfs_attr_remote.c | 2 --
fs/xfs/libxfs/xfs_bmap.c | 8 -----
fs/xfs/libxfs/xfs_defer.c | 59 ++++++++++++---------------------
fs/xfs/libxfs/xfs_defer.h | 1 -
fs/xfs/xfs_bmap_util.c | 4 ---
fs/xfs/xfs_inode.c | 2 --
fs/xfs/xfs_iomap.c | 3 --
fs/xfs/xfs_reflink.c | 4 ---
fs/xfs/xfs_symlink.c | 1 -
fs/xfs/xfs_trans.h | 3 --
11 files changed, 21 insertions(+), 75 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 227887bee00d..3190dfc21b60 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -320,7 +320,6 @@ xfs_attr_set(
* buffer and run into problems with the write verifier.
*/
xfs_trans_bhold(args.trans, leaf_bp);
- xfs_defer_ijoin(args.trans->t_dfops, dp);
error = xfs_defer_finish(&args.trans);
if (error)
goto out;
@@ -589,7 +588,6 @@ xfs_attr_leaf_addname(
error = xfs_attr3_leaf_to_node(args);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -678,7 +676,6 @@ xfs_attr_leaf_addname(
/* bp is gone due to xfs_da_shrink_inode */
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -742,7 +739,6 @@ xfs_attr_leaf_removename(
/* bp is gone due to xfs_da_shrink_inode */
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -869,7 +865,6 @@ xfs_attr_node_addname(
error = xfs_attr3_leaf_to_node(args);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -894,7 +889,6 @@ xfs_attr_node_addname(
error = xfs_da3_split(state);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -991,7 +985,6 @@ xfs_attr_node_addname(
error = xfs_da3_join(state);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -1115,7 +1108,6 @@ xfs_attr_node_removename(
error = xfs_da3_join(state);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -1147,7 +1139,6 @@ xfs_attr_node_removename(
/* bp is gone due to xfs_da_shrink_inode */
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index 77ca38586913..f52552313773 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -486,7 +486,6 @@ xfs_attr_rmtval_set(
&nmap);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
@@ -627,7 +626,6 @@ xfs_attr_rmtval_remove(
XFS_BMAPI_ATTRFORK, 1, &done);
if (error)
goto out_defer_cancel;
- xfs_defer_ijoin(args->trans->t_dfops, args->dp);
error = xfs_defer_finish(&args->trans);
if (error)
goto out_defer_cancel;
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 71687d805f79..5cd490dc891a 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -1119,7 +1119,6 @@ xfs_bmap_add_attrfork(
xfs_log_sb(tp);
}
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
return error;
@@ -5987,7 +5986,6 @@ __xfs_bmap_add(
int whichfork,
struct xfs_bmbt_irec *bmap)
{
- int error;
struct xfs_bmap_intent *bi;
trace_xfs_bmap_defer(mp,
@@ -6006,12 +6004,6 @@ __xfs_bmap_add(
bi->bi_whichfork = whichfork;
bi->bi_bmap = *bmap;
- error = xfs_defer_ijoin(dfops, bi->bi_owner);
- if (error) {
- kmem_free(bi);
- return error;
- }
-
xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_BMAP, &bi->bi_list);
return 0;
}
diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c
index e9b7671d289a..1e7073252a5e 100644
--- a/fs/xfs/libxfs/xfs_defer.c
+++ b/fs/xfs/libxfs/xfs_defer.c
@@ -15,6 +15,8 @@
#include "xfs_defer.h"
#include "xfs_trans.h"
#include "xfs_buf_item.h"
+#include "xfs_inode.h"
+#include "xfs_inode_item.h"
#include "xfs_trace.h"
/*
@@ -230,16 +232,14 @@ xfs_defer_trans_roll(
{
struct xfs_defer_ops *dop = (*tp)->t_dfops;
struct xfs_buf_log_item *bli;
+ struct xfs_inode_log_item *ili;
struct xfs_log_item *lip;
struct xfs_buf *bplist[XFS_DEFER_OPS_NR_BUFS];
- int bpcount = 0;
+ struct xfs_inode *iplist[XFS_DEFER_OPS_NR_INODES];
+ int bpcount = 0, ipcount = 0;
int i;
int error;
- /* Log all the joined inodes. */
- for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++)
- xfs_trans_log_inode(*tp, dop->dop_inodes[i], XFS_ILOG_CORE);
-
list_for_each_entry(lip, &(*tp)->t_items, li_trans) {
switch (lip->li_type) {
case XFS_LI_BUF:
@@ -254,6 +254,19 @@ xfs_defer_trans_roll(
bplist[bpcount++] = bli->bli_buf;
}
break;
+ case XFS_LI_INODE:
+ ili = container_of(lip, struct xfs_inode_log_item,
+ ili_item);
+ if (ili->ili_lock_flags == 0) {
+ if (ipcount >= XFS_DEFER_OPS_NR_INODES) {
+ ASSERT(0);
+ return -EFSCORRUPTED;
+ }
+ xfs_trans_log_inode(*tp, ili->ili_inode,
+ XFS_ILOG_CORE);
+ iplist[ipcount++] = ili->ili_inode;
+ }
+ break;
default:
break;
}
@@ -271,8 +284,8 @@ xfs_defer_trans_roll(
}
/* Rejoin the joined inodes. */
- for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++)
- xfs_trans_ijoin(*tp, dop->dop_inodes[i], 0);
+ for (i = 0; i < ipcount; i++)
+ xfs_trans_ijoin(*tp, iplist[i], 0);
/* Rejoin the buffers and dirty them so the log moves forward. */
for (i = 0; i < bpcount; i++) {
@@ -291,30 +304,6 @@ xfs_defer_has_unfinished_work(
return !list_empty(&dop->dop_pending) || !list_empty(&dop->dop_intake);
}
-/*
- * Add this inode to the deferred op. Each joined inode is relogged
- * each time we roll the transaction.
- */
-int
-xfs_defer_ijoin(
- struct xfs_defer_ops *dop,
- struct xfs_inode *ip)
-{
- int i;
-
- for (i = 0; i < XFS_DEFER_OPS_NR_INODES; i++) {
- if (dop->dop_inodes[i] == ip)
- return 0;
- else if (dop->dop_inodes[i] == NULL) {
- dop->dop_inodes[i] = ip;
- return 0;
- }
- }
-
- ASSERT(0);
- return -EFSCORRUPTED;
-}
-
/*
* Reset an already used dfops after finish.
*/
@@ -322,11 +311,7 @@ static void
xfs_defer_reset(
struct xfs_trans *tp)
{
- struct xfs_defer_ops *dop = tp->t_dfops;
-
- ASSERT(!xfs_defer_has_unfinished_work(dop));
-
- memset(dop->dop_inodes, 0, sizeof(dop->dop_inodes));
+ ASSERT(!xfs_defer_has_unfinished_work(tp->t_dfops));
/*
* Low mode state transfers across transaction rolls to mirror dfops
@@ -588,8 +573,6 @@ xfs_defer_move(
list_splice_init(&src->dop_intake, &dst->dop_intake);
list_splice_init(&src->dop_pending, &dst->dop_pending);
- memcpy(dst->dop_inodes, src->dop_inodes, sizeof(dst->dop_inodes));
-
/*
* Low free space mode was historically controlled by a dfops field.
* This meant that low mode state potentially carried across multiple
diff --git a/fs/xfs/libxfs/xfs_defer.h b/fs/xfs/libxfs/xfs_defer.h
index 4a8bb838adf2..bf1e9f78561e 100644
--- a/fs/xfs/libxfs/xfs_defer.h
+++ b/fs/xfs/libxfs/xfs_defer.h
@@ -42,7 +42,6 @@ int xfs_defer_finish(struct xfs_trans **tp);
void xfs_defer_cancel(struct xfs_trans *);
void xfs_defer_init(struct xfs_trans *tp, struct xfs_defer_ops *dop);
bool xfs_defer_has_unfinished_work(struct xfs_defer_ops *dop);
-int xfs_defer_ijoin(struct xfs_defer_ops *dop, struct xfs_inode *ip);
void xfs_defer_move(struct xfs_trans *dtp, struct xfs_trans *stp);
/* Description of a deferred type. */
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 0c58a66b39e5..30ac1300dc49 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -979,7 +979,6 @@ xfs_alloc_file_space(
/*
* Complete the transaction
*/
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
if (error)
@@ -1037,8 +1036,6 @@ xfs_unmap_extent(
if (error)
goto out_trans_cancel;
- xfs_defer_ijoin(tp->t_dfops, ip);
-
error = xfs_trans_commit(tp);
out_unlock:
xfs_iunlock(ip, XFS_ILOCK_EXCL);
@@ -1624,7 +1621,6 @@ xfs_swap_extent_rmap(
if (error)
goto out_defer;
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_defer_finish(tpp);
tp = *tpp;
if (error)
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 441c8593cfd7..7bb46a0eecfc 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1569,7 +1569,6 @@ xfs_itruncate_extents_flags(
* Duplicate the transaction that has the permanent
* reservation and commit the old transaction.
*/
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_defer_finish(&tp);
if (error)
goto out_bmap_cancel;
@@ -1810,7 +1809,6 @@ xfs_inactive_ifree(
* Just ignore errors at this point. There is nothing we can do except
* to try to keep going. Make sure it's not a silent error.
*/
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
if (error)
xfs_notice(mp, "%s: xfs_trans_commit returned error %d",
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 8093a01fcf9e..3282575e2df4 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -261,7 +261,6 @@ xfs_iomap_write_direct(
/*
* Complete the transaction
*/
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
if (error)
goto out_unlock;
@@ -764,7 +763,6 @@ xfs_iomap_write_allocate(
if (error)
goto trans_cancel;
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
if (error)
goto error0;
@@ -884,7 +882,6 @@ xfs_iomap_write_unwritten(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
if (error)
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index e986fcf928e5..dce8ba8ab681 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -435,7 +435,6 @@ xfs_reflink_allocate_cow(
xfs_inode_set_cowblocks_tag(ip);
/* Finish up. */
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_trans_commit(tp);
if (error)
return error;
@@ -518,7 +517,6 @@ xfs_reflink_cancel_cow_blocks(
NULL);
/* Roll the transaction */
- xfs_defer_ijoin((*tpp)->t_dfops, ip);
error = xfs_defer_finish(tpp);
if (error) {
xfs_defer_cancel(*tpp);
@@ -716,7 +714,6 @@ xfs_reflink_end_cow(
/* Remove the mapping from the CoW fork. */
xfs_bmap_del_extent_cow(ip, &icur, &got, &del);
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_defer_finish(&tp);
if (error)
goto out_cancel;
@@ -1077,7 +1074,6 @@ xfs_reflink_remap_extent(
next_extent:
/* Process all the deferred stuff. */
- xfs_defer_ijoin(tp->t_dfops, ip);
error = xfs_defer_finish(&tp);
if (error)
goto out_cancel;
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 2bfe7fbbedb2..a3e98c64b6e3 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -454,7 +454,6 @@ xfs_inactive_symlink_rmt(
* Commit the transaction. This first logs the EFI and the inode, then
* rolls and commits the transaction that frees the extents.
*/
- xfs_defer_ijoin(tp->t_dfops, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
error = xfs_trans_commit(tp);
if (error) {
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 581456c79197..8665d45b82c6 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -97,9 +97,6 @@ void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
struct xfs_defer_ops {
struct list_head dop_intake; /* unlogged pending work */
struct list_head dop_pending; /* logged pending work */
-
- /* relog these with each roll */
- struct xfs_inode *dop_inodes[XFS_DEFER_OPS_NR_INODES];
};
/*
--
2.17.1
next prev parent reply other threads:[~2018-08-01 15:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-01 13:19 [PATCH v2 00/15] xfs: condense dfops and automatic relogging Brian Foster
2018-08-01 13:19 ` [PATCH v2 01/15] xfs: refactor internal dfops initialization Brian Foster
2018-08-01 14:34 ` Darrick J. Wong
2018-08-01 13:19 ` [PATCH v2 02/15] xfs: use transaction for intent recovery instead of raw dfops Brian Foster
2018-08-01 14:35 ` Darrick J. Wong
2018-08-01 13:19 ` [PATCH v2 03/15] xfs: remove unused __xfs_defer_cancel() internal helper Brian Foster
2018-08-01 13:19 ` [PATCH v2 04/15] xfs: pass transaction to dfops reset/move helpers Brian Foster
2018-08-01 13:19 ` [PATCH v2 05/15] xfs: replace dop_low with transaction flag Brian Foster
2018-08-01 13:19 ` [PATCH v2 06/15] xfs: add missing defer ijoins for held inodes Brian Foster
2018-08-01 13:19 ` [PATCH v2 07/15] xfs: automatic dfops buffer relogging Brian Foster
2018-08-01 14:35 ` Darrick J. Wong
2018-08-01 13:19 ` Brian Foster [this message]
2018-08-01 14:36 ` [PATCH v2 08/15] xfs: automatic dfops inode relogging Darrick J. Wong
2018-08-01 13:19 ` [PATCH v2 09/15] xfs: drop dop param from xfs_defer_op_type ->finish_item() callback Brian Foster
2018-08-01 13:19 ` [PATCH v2 10/15] xfs: clean out superfluous dfops dop params/vars Brian Foster
2018-08-01 19:12 ` Darrick J. Wong
2018-08-01 13:19 ` [PATCH v2 11/15] xfs: cancel dfops on xfs_defer_finish() error Brian Foster
2018-08-01 13:19 ` [PATCH v2 12/15] xfs: replace xfs_defer_ops ->dop_pending with on-stack list Brian Foster
2018-08-01 14:39 ` Darrick J. Wong
2018-08-02 9:29 ` Christoph Hellwig
2018-08-02 12:09 ` Brian Foster
2018-08-02 12:10 ` [PATCH v3 " Brian Foster
2018-08-01 13:19 ` [PATCH v2 13/15] xfs: pass transaction to xfs_defer_add() Brian Foster
2018-08-01 19:10 ` Darrick J. Wong
2018-08-01 13:19 ` [PATCH v2 14/15] xfs: always defer agfl block frees Brian Foster
2018-08-01 13:19 ` [PATCH v2 15/15] xfs: fold dfops into the transaction Brian Foster
2018-08-02 12:11 ` [PATCH v3 " Brian Foster
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