--- /dev/null
+/*
+ * Copyright (c) 2008-2010, 2013 Dave Chinner
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_bit.h"
+#include "xfs_mount.h"
+#include "xfs_trans.h"
+#include "xfs_trans_priv.h"
+#include "xfs_error.h"
+#include "xfs_icreate_item.h"
+#include "xfs_log.h"
+
+kmem_zone_t *xfs_icreate_zone; /* inode create item zone */
+
+static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
+{
+ return container_of(lip, struct xfs_icreate_item, ic_item);
+}
+
+/*
+ * This returns the number of iovecs needed to log the given inode item.
+ *
+ * We only need one iovec for the icreate log structure.
+ */
+STATIC void
+xfs_icreate_item_size(
+ struct xfs_log_item *lip,
+ int *nvecs,
+ int *nbytes)
+{
+ *nvecs += 1;
+ *nbytes += sizeof(struct xfs_icreate_log);
+}
+
+/*
+ * This is called to fill in the vector of log iovecs for the
+ * given inode create log item.
+ */
+STATIC void
+xfs_icreate_item_format(
+ struct xfs_log_item *lip,
+ struct xfs_log_vec *lv)
+{
+ struct xfs_icreate_item *icp = ICR_ITEM(lip);
+ struct xfs_log_iovec *vecp = NULL;
+
+ xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE,
+ &icp->ic_format,
+ sizeof(struct xfs_icreate_log));
+}
+
+
+/* Pinning has no meaning for the create item, so just return. */
+STATIC void
+xfs_icreate_item_pin(
+ struct xfs_log_item *lip)
+{
+}
+
+
+/* pinning has no meaning for the create item, so just return. */
+STATIC void
+xfs_icreate_item_unpin(
+ struct xfs_log_item *lip,
+ int remove)
+{
+}
+
+STATIC void
+xfs_icreate_item_unlock(
+ struct xfs_log_item *lip)
+{
+ struct xfs_icreate_item *icp = ICR_ITEM(lip);
+
+ if (icp->ic_item.li_flags & XFS_LI_ABORTED)
+ kmem_zone_free(xfs_icreate_zone, icp);
+ return;
+}
+
+/*
+ * Because we have ordered buffers being tracked in the AIL for the inode
+ * creation, we don't need the create item after this. Hence we can free
+ * the log item and return -1 to tell the caller we're done with the item.
+ */
+STATIC xfs_lsn_t
+xfs_icreate_item_committed(
+ struct xfs_log_item *lip,
+ xfs_lsn_t lsn)
+{
+ struct xfs_icreate_item *icp = ICR_ITEM(lip);
+
+ kmem_zone_free(xfs_icreate_zone, icp);
+ return (xfs_lsn_t)-1;
+}
+
+/* item can never get into the AIL */
+STATIC uint
+xfs_icreate_item_push(
+ struct xfs_log_item *lip,
+ struct list_head *buffer_list)
+{
+ ASSERT(0);
+ return XFS_ITEM_SUCCESS;
+}
+
+/* Ordered buffers do the dependency tracking here, so this does nothing. */
+STATIC void
+xfs_icreate_item_committing(
+ struct xfs_log_item *lip,
+ xfs_lsn_t lsn)
+{
+}
+
+/*
+ * This is the ops vector shared by all buf log items.
+ */
+static struct xfs_item_ops xfs_icreate_item_ops = {
+ .iop_size = xfs_icreate_item_size,
+ .iop_format = xfs_icreate_item_format,
+ .iop_pin = xfs_icreate_item_pin,
+ .iop_unpin = xfs_icreate_item_unpin,
+ .iop_push = xfs_icreate_item_push,
+ .iop_unlock = xfs_icreate_item_unlock,
+ .iop_committed = xfs_icreate_item_committed,
+ .iop_committing = xfs_icreate_item_committing,
+};
+
+
+/*
+ * Initialize the inode log item for a newly allocated (in-core) inode.
+ *
+ * Inode extents can only reside within an AG. Hence specify the starting
+ * block for the inode chunk by offset within an AG as well as the
+ * length of the allocated extent.
+ *
+ * This joins the item to the transaction and marks it dirty so
+ * that we don't need a separate call to do this, nor does the
+ * caller need to know anything about the icreate item.
+ */
+void
+xfs_icreate_log(
+ struct xfs_trans *tp,
+ xfs_agnumber_t agno,
+ xfs_agblock_t agbno,
+ unsigned int count,
+ unsigned int inode_size,
+ xfs_agblock_t length,
+ unsigned int generation)
+{
+ struct xfs_icreate_item *icp;
+
+ icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
+
+ xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
+ &xfs_icreate_item_ops);
+
+ icp->ic_format.icl_type = XFS_LI_ICREATE;
+ icp->ic_format.icl_size = 1; /* single vector */
+ icp->ic_format.icl_ag = cpu_to_be32(agno);
+ icp->ic_format.icl_agbno = cpu_to_be32(agbno);
+ icp->ic_format.icl_count = cpu_to_be32(count);
+ icp->ic_format.icl_isize = cpu_to_be32(inode_size);
+ icp->ic_format.icl_length = cpu_to_be32(length);
+ icp->ic_format.icl_gen = cpu_to_be32(generation);
+
+ xfs_trans_add_item(tp, &icp->ic_item);
+ tp->t_flags |= XFS_TRANS_DIRTY;
+ icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY;
+}
Code Review / kvmfornfv.git / blobdiff