/*
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
+ * Copyright (C) 2010 Red Hat, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
-#include "xfs_dir2.h"
-#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_error.h"
#include "xfs_da_btree.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_btree.h"
#include "xfs_trace.h"
kmem_zone_t *xfs_trans_zone;
+kmem_zone_t *xfs_log_item_desc_zone;
/*
tp->t_magic = XFS_TRANS_MAGIC;
tp->t_type = type;
tp->t_mountp = mp;
- tp->t_items_free = XFS_LIC_NUM_SLOTS;
- xfs_lic_init(&(tp->t_items));
+ INIT_LIST_HEAD(&tp->t_items);
INIT_LIST_HEAD(&tp->t_busy);
return tp;
}
ntp->t_magic = XFS_TRANS_MAGIC;
ntp->t_type = tp->t_type;
ntp->t_mountp = tp->t_mountp;
- ntp->t_items_free = XFS_LIC_NUM_SLOTS;
- xfs_lic_init(&(ntp->t_items));
+ INIT_LIST_HEAD(&ntp->t_items);
INIT_LIST_HEAD(&ntp->t_busy);
ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
}
}
+/*
+ * Add the given log item to the transaction's list of log items.
+ *
+ * The log item will now point to its new descriptor with its li_desc field.
+ */
+void
+xfs_trans_add_item(
+ struct xfs_trans *tp,
+ struct xfs_log_item *lip)
+{
+ struct xfs_log_item_desc *lidp;
+
+ ASSERT(lip->li_mountp = tp->t_mountp);
+ ASSERT(lip->li_ailp = tp->t_mountp->m_ail);
+
+ lidp = kmem_zone_zalloc(xfs_log_item_desc_zone, KM_SLEEP | KM_NOFS);
+
+ lidp->lid_item = lip;
+ lidp->lid_flags = 0;
+ lidp->lid_size = 0;
+ list_add_tail(&lidp->lid_trans, &tp->t_items);
+
+ lip->li_desc = lidp;
+}
+
+STATIC void
+xfs_trans_free_item_desc(
+ struct xfs_log_item_desc *lidp)
+{
+ list_del_init(&lidp->lid_trans);
+ kmem_zone_free(xfs_log_item_desc_zone, lidp);
+}
+
+/*
+ * Unlink and free the given descriptor.
+ */
+void
+xfs_trans_del_item(
+ struct xfs_log_item *lip)
+{
+ xfs_trans_free_item_desc(lip->li_desc);
+ lip->li_desc = NULL;
+}
+
+/*
+ * Unlock all of the items of a transaction and free all the descriptors
+ * of that transaction.
+ */
+void
+xfs_trans_free_items(
+ struct xfs_trans *tp,
+ xfs_lsn_t commit_lsn,
+ int flags)
+{
+ struct xfs_log_item_desc *lidp, *next;
+
+ list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) {
+ struct xfs_log_item *lip = lidp->lid_item;
+
+ lip->li_desc = NULL;
+
+ if (commit_lsn != NULLCOMMITLSN)
+ IOP_COMMITTING(lip, commit_lsn);
+ if (flags & XFS_TRANS_ABORT)
+ lip->li_flags |= XFS_LI_ABORTED;
+ IOP_UNLOCK(lip);
+
+ xfs_trans_free_item_desc(lidp);
+ }
+}
+
+/*
+ * Unlock the items associated with a transaction.
+ *
+ * Items which were not logged should be freed. Those which were logged must
+ * still be tracked so they can be unpinned when the transaction commits.
+ */
+STATIC void
+xfs_trans_unlock_items(
+ struct xfs_trans *tp,
+ xfs_lsn_t commit_lsn)
+{
+ struct xfs_log_item_desc *lidp, *next;
+
+ list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) {
+ struct xfs_log_item *lip = lidp->lid_item;
+
+ lip->li_desc = NULL;
+
+ if (commit_lsn != NULLCOMMITLSN)
+ IOP_COMMITTING(lip, commit_lsn);
+ IOP_UNLOCK(lip);
+
+ /*
+ * Free the descriptor if the item is not dirty
+ * within this transaction.
+ */
+ if (!(lidp->lid_flags & XFS_LID_DIRTY))
+ xfs_trans_free_item_desc(lidp);
+ }
+}
+
/*
* Total up the number of log iovecs needed to commit this
* transaction. The transaction itself needs one for the
struct xfs_trans *tp)
{
int nvecs;
- xfs_log_item_desc_t *lidp;
+ struct xfs_log_item_desc *lidp;
nvecs = 1;
- lidp = xfs_trans_first_item(tp);
- ASSERT(lidp != NULL);
/* In the non-debug case we need to start bailing out if we
* didn't find a log_item here, return zero and let trans_commit
* deal with it.
*/
- if (lidp == NULL)
+ if (list_empty(&tp->t_items)) {
+ ASSERT(0);
return 0;
+ }
- while (lidp != NULL) {
+ list_for_each_entry(lidp, &tp->t_items, lid_trans) {
/*
* Skip items which aren't dirty in this transaction.
*/
- if (!(lidp->lid_flags & XFS_LID_DIRTY)) {
- lidp = xfs_trans_next_item(tp, lidp);
+ if (!(lidp->lid_flags & XFS_LID_DIRTY))
continue;
- }
lidp->lid_size = IOP_SIZE(lidp->lid_item);
nvecs += lidp->lid_size;
- lidp = xfs_trans_next_item(tp, lidp);
}
return nvecs;
struct xfs_trans *tp,
struct xfs_log_iovec *log_vector)
{
- xfs_log_item_desc_t *lidp;
+ struct xfs_log_item_desc *lidp;
struct xfs_log_iovec *vecp;
uint nitems;
vecp = log_vector + 1;
nitems = 0;
- lidp = xfs_trans_first_item(tp);
- ASSERT(lidp);
- while (lidp) {
+ ASSERT(!list_empty(&tp->t_items));
+ list_for_each_entry(lidp, &tp->t_items, lid_trans) {
/* Skip items which aren't dirty in this transaction. */
- if (!(lidp->lid_flags & XFS_LID_DIRTY)) {
- lidp = xfs_trans_next_item(tp, lidp);
+ if (!(lidp->lid_flags & XFS_LID_DIRTY))
continue;
- }
/*
* The item may be marked dirty but not log anything. This can
IOP_FORMAT(lidp->lid_item, vecp);
vecp += lidp->lid_size;
IOP_PIN(lidp->lid_item);
- lidp = xfs_trans_next_item(tp, lidp);
}
/*
* log item flags, if anyone else stales the buffer we do not want to
* pay any attention to it.
*/
- IOP_UNPIN(lip);
+ IOP_UNPIN(lip, 0);
}
/*
struct xfs_trans *tp,
int abortflag)
{
- xfs_log_item_desc_t *lidp;
- xfs_log_item_chunk_t *licp;
- xfs_log_item_chunk_t *next_licp;
+ struct xfs_log_item_desc *lidp, *next;
/* Call the transaction's completion callback if there is one. */
if (tp->t_callback != NULL)
tp->t_callback(tp, tp->t_callarg);
- for (lidp = xfs_trans_first_item(tp);
- lidp != NULL;
- lidp = xfs_trans_next_item(tp, lidp)) {
+ list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) {
xfs_trans_item_committed(lidp->lid_item, tp->t_lsn, abortflag);
- }
-
- /* free the item chunks, ignoring the embedded chunk */
- for (licp = tp->t_items.lic_next; licp != NULL; licp = next_licp) {
- next_licp = licp->lic_next;
- kmem_free(licp);
+ xfs_trans_free_item_desc(lidp);
}
xfs_trans_free(tp);
struct xfs_trans *tp,
uint flags)
{
- xfs_log_item_desc_t *lidp;
+ struct xfs_log_item_desc *lidp;
- for (lidp = xfs_trans_first_item(tp);
- lidp != NULL;
- lidp = xfs_trans_next_item(tp, lidp)) {
+ list_for_each_entry(lidp, &tp->t_items, lid_trans) {
/*
* Unpin all but those that aren't dirty.
*/
if (lidp->lid_flags & XFS_LID_DIRTY)
- IOP_UNPIN_REMOVE(lidp->lid_item, tp);
+ IOP_UNPIN(lidp->lid_item, 1);
}
xfs_trans_unreserve_and_mod_sb(tp);
xfs_trans_alloc_log_vecs(
xfs_trans_t *tp)
{
- xfs_log_item_desc_t *lidp;
+ struct xfs_log_item_desc *lidp;
struct xfs_log_vec *lv = NULL;
struct xfs_log_vec *ret_lv = NULL;
- lidp = xfs_trans_first_item(tp);
/* Bail out if we didn't find a log item. */
- if (!lidp) {
+ if (list_empty(&tp->t_items)) {
ASSERT(0);
return NULL;
}
- while (lidp != NULL) {
+ list_for_each_entry(lidp, &tp->t_items, lid_trans) {
struct xfs_log_vec *new_lv;
/* Skip items which aren't dirty in this transaction. */
- if (!(lidp->lid_flags & XFS_LID_DIRTY)) {
- lidp = xfs_trans_next_item(tp, lidp);
+ if (!(lidp->lid_flags & XFS_LID_DIRTY))
continue;
- }
/* Skip items that do not have any vectors for writing */
lidp->lid_size = IOP_SIZE(lidp->lid_item);
- if (!lidp->lid_size) {
- lidp = xfs_trans_next_item(tp, lidp);
+ if (!lidp->lid_size)
continue;
- }
new_lv = kmem_zalloc(sizeof(*new_lv) +
lidp->lid_size * sizeof(struct xfs_log_iovec),
else
lv->lv_next = new_lv;
lv = new_lv;
- lidp = xfs_trans_next_item(tp, lidp);
}
return ret_lv;
return error;
current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
-
- /* xfs_trans_free_items() unlocks them first */
- xfs_trans_free_items(tp, *commit_lsn, 0);
xfs_trans_free(tp);
return 0;
}
int flags)
{
int log_flags;
-#ifdef DEBUG
- xfs_log_item_chunk_t *licp;
- xfs_log_item_desc_t *lidp;
- xfs_log_item_t *lip;
- int i;
-#endif
xfs_mount_t *mp = tp->t_mountp;
/*
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
}
#ifdef DEBUG
- if (!(flags & XFS_TRANS_ABORT)) {
- licp = &(tp->t_items);
- while (licp != NULL) {
- lidp = licp->lic_descs;
- for (i = 0; i < licp->lic_unused; i++, lidp++) {
- if (xfs_lic_isfree(licp, i)) {
- continue;
- }
-
- lip = lidp->lid_item;
- if (!XFS_FORCED_SHUTDOWN(mp))
- ASSERT(!(lip->li_type == XFS_LI_EFD));
- }
- licp = licp->lic_next;
- }
+ if (!(flags & XFS_TRANS_ABORT) && !XFS_FORCED_SHUTDOWN(mp)) {
+ struct xfs_log_item_desc *lidp;
+
+ list_for_each_entry(lidp, &tp->t_items, lid_trans)
+ ASSERT(!(lidp->lid_item->li_type == XFS_LI_EFD));
}
#endif
xfs_trans_unreserve_and_mod_sb(tp);
if (error)
return error;
- xfs_trans_ijoin(trans, dp, XFS_ILOCK_EXCL);
- xfs_trans_ihold(trans, dp);
+ xfs_trans_ijoin(trans, dp);
return 0;
}
projects / ~andy / linux / blobdiff