xfs: cleanup the transaction commit path a bit
Now that the nodelaylog mode is gone we can simplify the transaction commit
path a bit by removing the xfs_trans_commit_cil routine. Restoring the
process flags is merged into xfs_trans_commit which already does it for
the error path, and allocating the log vectors is merged into
xlog_cil_format_items, which already fills them with data, thus avoiding
one loop over all log items.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index d511332..6170f1c 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -1325,82 +1325,6 @@
}
/*
- * Walk the log items and allocate log vector structures for
- * each item large enough to fit all the vectors they require.
- * Note that this format differs from the old log vector format in
- * that there is no transaction header in these log vectors.
- */
-STATIC struct xfs_log_vec *
-xfs_trans_alloc_log_vecs(
- xfs_trans_t *tp)
-{
- struct xfs_log_item_desc *lidp;
- struct xfs_log_vec *lv = NULL;
- struct xfs_log_vec *ret_lv = NULL;
-
-
- /* Bail out if we didn't find a log item. */
- if (list_empty(&tp->t_items)) {
- ASSERT(0);
- return 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))
- continue;
-
- /* Skip items that do not have any vectors for writing */
- lidp->lid_size = IOP_SIZE(lidp->lid_item);
- if (!lidp->lid_size)
- continue;
-
- new_lv = kmem_zalloc(sizeof(*new_lv) +
- lidp->lid_size * sizeof(struct xfs_log_iovec),
- KM_SLEEP);
-
- /* The allocated iovec region lies beyond the log vector. */
- new_lv->lv_iovecp = (struct xfs_log_iovec *)&new_lv[1];
- new_lv->lv_niovecs = lidp->lid_size;
- new_lv->lv_item = lidp->lid_item;
- if (!ret_lv)
- ret_lv = new_lv;
- else
- lv->lv_next = new_lv;
- lv = new_lv;
- }
-
- return ret_lv;
-}
-
-static int
-xfs_trans_commit_cil(
- struct xfs_mount *mp,
- struct xfs_trans *tp,
- xfs_lsn_t *commit_lsn,
- int flags)
-{
- struct xfs_log_vec *log_vector;
-
- /*
- * Get each log item to allocate a vector structure for
- * the log item to to pass to the log write code. The
- * CIL commit code will format the vector and save it away.
- */
- log_vector = xfs_trans_alloc_log_vecs(tp);
- if (!log_vector)
- return ENOMEM;
-
- xfs_log_commit_cil(mp, tp, log_vector, commit_lsn, flags);
-
- current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
- xfs_trans_free(tp);
- return 0;
-}
-
-/*
* Commit the given transaction to the log.
*
* XFS disk error handling mechanism is not based on a typical
@@ -1456,13 +1380,16 @@
xfs_trans_apply_sb_deltas(tp);
xfs_trans_apply_dquot_deltas(tp);
- error = xfs_trans_commit_cil(mp, tp, &commit_lsn, flags);
+ error = xfs_log_commit_cil(mp, tp, &commit_lsn, flags);
if (error == ENOMEM) {
xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
error = XFS_ERROR(EIO);
goto out_unreserve;
}
+ current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
+ xfs_trans_free(tp);
+
/*
* If the transaction needs to be synchronous, then force the
* log out now and wait for it.
