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-rw-r--r--fs/xfs/xfs_trans.c79
1 files changed, 78 insertions, 1 deletions
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index f6d956b7711e..f80a067a4658 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -1350,7 +1350,7 @@ xfs_trans_fill_vecs(
* they could be immediately flushed and we'd have to race with the flusher
* trying to pull the item from the AIL as we add it.
*/
-void
+static void
xfs_trans_item_committed(
struct xfs_log_item *lip,
xfs_lsn_t commit_lsn,
@@ -1425,6 +1425,83 @@ xfs_trans_committed(
xfs_trans_free(tp);
}
+static inline void
+xfs_log_item_batch_insert(
+ struct xfs_ail *ailp,
+ struct xfs_log_item **log_items,
+ int nr_items,
+ xfs_lsn_t commit_lsn)
+{
+ int i;
+
+ spin_lock(&ailp->xa_lock);
+ /* xfs_trans_ail_update_bulk drops ailp->xa_lock */
+ xfs_trans_ail_update_bulk(ailp, log_items, nr_items, commit_lsn);
+
+ for (i = 0; i < nr_items; i++)
+ IOP_UNPIN(log_items[i], 0);
+}
+
+/*
+ * Bulk operation version of xfs_trans_committed that takes a log vector of
+ * items to insert into the AIL. This uses bulk AIL insertion techniques to
+ * minimise lock traffic.
+ */
+void
+xfs_trans_committed_bulk(
+ struct xfs_ail *ailp,
+ struct xfs_log_vec *log_vector,
+ xfs_lsn_t commit_lsn,
+ int aborted)
+{
+#define LOG_ITEM_BATCH_SIZE 32
+ struct xfs_log_item *log_items[LOG_ITEM_BATCH_SIZE];
+ struct xfs_log_vec *lv;
+ int i = 0;
+
+ /* unpin all the log items */
+ for (lv = log_vector; lv; lv = lv->lv_next ) {
+ struct xfs_log_item *lip = lv->lv_item;
+ xfs_lsn_t item_lsn;
+
+ if (aborted)
+ lip->li_flags |= XFS_LI_ABORTED;
+ item_lsn = IOP_COMMITTED(lip, commit_lsn);
+
+ /* item_lsn of -1 means the item was freed */
+ if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0)
+ continue;
+
+ if (item_lsn != commit_lsn) {
+
+ /*
+ * Not a bulk update option due to unusual item_lsn.
+ * Push into AIL immediately, rechecking the lsn once
+ * we have the ail lock. Then unpin the item.
+ */
+ spin_lock(&ailp->xa_lock);
+ if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0)
+ xfs_trans_ail_update(ailp, lip, item_lsn);
+ else
+ spin_unlock(&ailp->xa_lock);
+ IOP_UNPIN(lip, 0);
+ continue;
+ }
+
+ /* Item is a candidate for bulk AIL insert. */
+ log_items[i++] = lv->lv_item;
+ if (i >= LOG_ITEM_BATCH_SIZE) {
+ xfs_log_item_batch_insert(ailp, log_items,
+ LOG_ITEM_BATCH_SIZE, commit_lsn);
+ i = 0;
+ }
+ }
+
+ /* make sure we insert the remainder! */
+ if (i)
+ xfs_log_item_batch_insert(ailp, log_items, i, commit_lsn);
+}
+
/*
* Called from the trans_commit code when we notice that
* the filesystem is in the middle of a forced shutdown.