xfs: refactor adding recovered intent items to the log

During recovery, every intent that we recover from the log has to be
added to the AIL.  Replace the open-coded addition with a helper.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>

fs/xfs/xfs_bmap_item.c

@@ -651,15 +651,11 @@ xlog_recover_bui_commit_pass2(
 		return error;
 	}
 	atomic_set(&buip->bui_next_extent, bui_formatp->bui_nextents);
-
-	spin_lock(&log->l_ailp->ail_lock);
 	/*
-	 * The RUI has two references. One for the RUD and one for RUI to ensure
-	 * it makes it into the AIL. Insert the RUI into the AIL directly and
-	 * drop the RUI reference. Note that xfs_trans_ail_update() drops the
-	 * AIL lock.
+	 * Insert the intent into the AIL directly and drop one reference so
+	 * that finishing or canceling the work will drop the other.
 	 */
-	xfs_trans_ail_update(log->l_ailp, &buip->bui_item, lsn);
+	xfs_trans_ail_insert(log->l_ailp, &buip->bui_item, lsn);
 	xfs_bui_release(buip);
 	return 0;
 }

fs/xfs/xfs_extfree_item.c

@@ -710,15 +710,11 @@ xlog_recover_efi_commit_pass2(
 		return error;
 	}
 	atomic_set(&efip->efi_next_extent, efi_formatp->efi_nextents);
-
-	spin_lock(&log->l_ailp->ail_lock);
 	/*
-	 * The EFI has two references. One for the EFD and one for EFI to ensure
-	 * it makes it into the AIL. Insert the EFI into the AIL directly and
-	 * drop the EFI reference. Note that xfs_trans_ail_update() drops the
-	 * AIL lock.
+	 * Insert the intent into the AIL directly and drop one reference so
+	 * that finishing or canceling the work will drop the other.
 	 */
-	xfs_trans_ail_update(log->l_ailp, &efip->efi_item, lsn);
+	xfs_trans_ail_insert(log->l_ailp, &efip->efi_item, lsn);
 	xfs_efi_release(efip);
 	return 0;
 }

fs/xfs/xfs_refcount_item.c

@@ -660,15 +660,11 @@ xlog_recover_cui_commit_pass2(
 		return error;
 	}
 	atomic_set(&cuip->cui_next_extent, cui_formatp->cui_nextents);
-
-	spin_lock(&log->l_ailp->ail_lock);
 	/*
-	 * The CUI has two references. One for the CUD and one for CUI to ensure
-	 * it makes it into the AIL. Insert the CUI into the AIL directly and
-	 * drop the CUI reference. Note that xfs_trans_ail_update() drops the
-	 * AIL lock.
+	 * Insert the intent into the AIL directly and drop one reference so
+	 * that finishing or canceling the work will drop the other.
 	 */
-	xfs_trans_ail_update(log->l_ailp, &cuip->cui_item, lsn);
+	xfs_trans_ail_insert(log->l_ailp, &cuip->cui_item, lsn);
 	xfs_cui_release(cuip);
 	return 0;
 }

fs/xfs/xfs_rmap_item.c

@@ -651,15 +651,11 @@ xlog_recover_rui_commit_pass2(
 		return error;
 	}
 	atomic_set(&ruip->rui_next_extent, rui_formatp->rui_nextents);
-
-	spin_lock(&log->l_ailp->ail_lock);
 	/*
-	 * The RUI has two references. One for the RUD and one for RUI to ensure
-	 * it makes it into the AIL. Insert the RUI into the AIL directly and
-	 * drop the RUI reference. Note that xfs_trans_ail_update() drops the
-	 * AIL lock.
+	 * Insert the intent into the AIL directly and drop one reference so
+	 * that finishing or canceling the work will drop the other.
 	 */
-	xfs_trans_ail_update(log->l_ailp, &ruip->rui_item, lsn);
+	xfs_trans_ail_insert(log->l_ailp, &ruip->rui_item, lsn);
 	xfs_rui_release(ruip);
 	return 0;
 }

fs/xfs/xfs_trans_ail.c

@@ -815,6 +815,17 @@ xfs_trans_ail_update_bulk(
 	xfs_ail_update_finish(ailp, tail_lsn);
 }
 
+/* Insert a log item into the AIL. */
+void
+xfs_trans_ail_insert(
+	struct xfs_ail		*ailp,
+	struct xfs_log_item	*lip,
+	xfs_lsn_t		lsn)
+{
+	spin_lock(&ailp->ail_lock);
+	xfs_trans_ail_update_bulk(ailp, NULL, &lip, 1, lsn);
+}
+
 /*
  * Delete one log item from the AIL.
  *

fs/xfs/xfs_trans_priv.h

@@ -91,6 +91,9 @@ xfs_trans_ail_update(
 	xfs_trans_ail_update_bulk(ailp, NULL, &lip, 1, lsn);
 }
 
+void xfs_trans_ail_insert(struct xfs_ail *ailp, struct xfs_log_item *lip,
+		xfs_lsn_t lsn);
+
 xfs_lsn_t xfs_ail_delete_one(struct xfs_ail *ailp, struct xfs_log_item *lip);
 void xfs_ail_update_finish(struct xfs_ail *ailp, xfs_lsn_t old_lsn)
 			__releases(ailp->ail_lock);