1 files changed, 153 insertions, 62 deletions

diff --git a/fs/xfs/xfs_trans_extfree.c b/fs/xfs/xfs_trans_extfree.c
index a96ae540eb62..459ddec137a4 100644
--- a/fs/xfs/xfs_trans_extfree.c
+++ b/fs/xfs/xfs_trans_extfree.c
@@ -21,66 +21,15 @@
 #include "xfs_format.h"
 #include "xfs_log_format.h"
 #include "xfs_trans_resv.h"
+#include "xfs_bit.h"
 #include "xfs_mount.h"
+#include "xfs_defer.h"
 #include "xfs_trans.h"
 #include "xfs_trans_priv.h"
 #include "xfs_extfree_item.h"
 #include "xfs_alloc.h"
-
-/*
- * This routine is called to allocate an "extent free intention"
- * log item that will hold nextents worth of extents.  The
- * caller must use all nextents extents, because we are not
- * flexible about this at all.
- */
-xfs_efi_log_item_t *
-xfs_trans_get_efi(xfs_trans_t	*tp,
-		  uint		nextents)
-{
-	xfs_efi_log_item_t	*efip;
-
-	ASSERT(tp != NULL);
-	ASSERT(nextents > 0);
-
-	efip = xfs_efi_init(tp->t_mountp, nextents);
-	ASSERT(efip != NULL);
-
-	/*
-	 * Get a log_item_desc to point at the new item.
-	 */
-	xfs_trans_add_item(tp, &efip->efi_item);
-	return efip;
-}
-
-/*
- * This routine is called to indicate that the described
- * extent is to be logged as needing to be freed.  It should
- * be called once for each extent to be freed.
- */
-void
-xfs_trans_log_efi_extent(xfs_trans_t		*tp,
-			 xfs_efi_log_item_t	*efip,
-			 xfs_fsblock_t		start_block,
-			 xfs_extlen_t		ext_len)
-{
-	uint			next_extent;
-	xfs_extent_t		*extp;
-
-	tp->t_flags |= XFS_TRANS_DIRTY;
-	efip->efi_item.li_desc->lid_flags |= XFS_LID_DIRTY;
-
-	/*
-	 * atomic_inc_return gives us the value after the increment;
-	 * we want to use it as an array index so we need to subtract 1 from
-	 * it.
-	 */
-	next_extent = atomic_inc_return(&efip->efi_next_extent) - 1;
-	ASSERT(next_extent < efip->efi_format.efi_nextents);
-	extp = &(efip->efi_format.efi_extents[next_extent]);
-	extp->ext_start = start_block;
-	extp->ext_len = ext_len;
-}
-
+#include "xfs_bmap.h"
+#include "xfs_trace.h"
 
 /*
  * This routine is called to allocate an "extent free done"
@@ -88,12 +37,12 @@ xfs_trans_log_efi_extent(xfs_trans_t		*tp,
  * caller must use all nextents extents, because we are not
  * flexible about this at all.
  */
-xfs_efd_log_item_t *
-xfs_trans_get_efd(xfs_trans_t		*tp,
-		  xfs_efi_log_item_t	*efip,
-		  uint			nextents)
+struct xfs_efd_log_item *
+xfs_trans_get_efd(struct xfs_trans		*tp,
+		  struct xfs_efi_log_item	*efip,
+		  uint				nextents)
 {
-	xfs_efd_log_item_t	*efdp;
+	struct xfs_efd_log_item			*efdp;
 
 	ASSERT(tp != NULL);
 	ASSERT(nextents > 0);
@@ -118,13 +67,19 @@ xfs_trans_free_extent(
 	struct xfs_trans	*tp,
 	struct xfs_efd_log_item	*efdp,
 	xfs_fsblock_t		start_block,
-	xfs_extlen_t		ext_len)
+	xfs_extlen_t		ext_len,
+	struct xfs_owner_info	*oinfo)
 {
+	struct xfs_mount	*mp = tp->t_mountp;
 	uint			next_extent;
+	xfs_agnumber_t		agno = XFS_FSB_TO_AGNO(mp, start_block);
+	xfs_agblock_t		agbno = XFS_FSB_TO_AGBNO(mp, start_block);
 	struct xfs_extent	*extp;
 	int			error;
 
-	error = xfs_free_extent(tp, start_block, ext_len);
+	trace_xfs_bmap_free_deferred(tp->t_mountp, agno, 0, agbno, ext_len);
+
+	error = xfs_free_extent(tp, start_block, ext_len, oinfo);
 
 	/*
 	 * Mark the transaction dirty, even on error. This ensures the
@@ -145,3 +100,139 @@ xfs_trans_free_extent(
 
 	return error;
 }
+
+/* Sort bmap items by AG. */
+static int
+xfs_extent_free_diff_items(
+	void				*priv,
+	struct list_head		*a,
+	struct list_head		*b)
+{
+	struct xfs_mount		*mp = priv;
+	struct xfs_extent_free_item	*ra;
+	struct xfs_extent_free_item	*rb;
+
+	ra = container_of(a, struct xfs_extent_free_item, xefi_list);
+	rb = container_of(b, struct xfs_extent_free_item, xefi_list);
+	return  XFS_FSB_TO_AGNO(mp, ra->xefi_startblock) -
+		XFS_FSB_TO_AGNO(mp, rb->xefi_startblock);
+}
+
+/* Get an EFI. */
+STATIC void *
+xfs_extent_free_create_intent(
+	struct xfs_trans		*tp,
+	unsigned int			count)
+{
+	struct xfs_efi_log_item		*efip;
+
+	ASSERT(tp != NULL);
+	ASSERT(count > 0);
+
+	efip = xfs_efi_init(tp->t_mountp, count);
+	ASSERT(efip != NULL);
+
+	/*
+	 * Get a log_item_desc to point at the new item.
+	 */
+	xfs_trans_add_item(tp, &efip->efi_item);
+	return efip;
+}
+
+/* Log a free extent to the intent item. */
+STATIC void
+xfs_extent_free_log_item(
+	struct xfs_trans		*tp,
+	void				*intent,
+	struct list_head		*item)
+{
+	struct xfs_efi_log_item		*efip = intent;
+	struct xfs_extent_free_item	*free;
+	uint				next_extent;
+	struct xfs_extent		*extp;
+
+	free = container_of(item, struct xfs_extent_free_item, xefi_list);
+
+	tp->t_flags |= XFS_TRANS_DIRTY;
+	efip->efi_item.li_desc->lid_flags |= XFS_LID_DIRTY;
+
+	/*
+	 * atomic_inc_return gives us the value after the increment;
+	 * we want to use it as an array index so we need to subtract 1 from
+	 * it.
+	 */
+	next_extent = atomic_inc_return(&efip->efi_next_extent) - 1;
+	ASSERT(next_extent < efip->efi_format.efi_nextents);
+	extp = &efip->efi_format.efi_extents[next_extent];
+	extp->ext_start = free->xefi_startblock;
+	extp->ext_len = free->xefi_blockcount;
+}
+
+/* Get an EFD so we can process all the free extents. */
+STATIC void *
+xfs_extent_free_create_done(
+	struct xfs_trans		*tp,
+	void				*intent,
+	unsigned int			count)
+{
+	return xfs_trans_get_efd(tp, intent, count);
+}
+
+/* Process a free extent. */
+STATIC int
+xfs_extent_free_finish_item(
+	struct xfs_trans		*tp,
+	struct xfs_defer_ops		*dop,
+	struct list_head		*item,
+	void				*done_item,
+	void				**state)
+{
+	struct xfs_extent_free_item	*free;
+	int				error;
+
+	free = container_of(item, struct xfs_extent_free_item, xefi_list);
+	error = xfs_trans_free_extent(tp, done_item,
+			free->xefi_startblock,
+			free->xefi_blockcount,
+			&free->xefi_oinfo);
+	kmem_free(free);
+	return error;
+}
+
+/* Abort all pending EFIs. */
+STATIC void
+xfs_extent_free_abort_intent(
+	void				*intent)
+{
+	xfs_efi_release(intent);
+}
+
+/* Cancel a free extent. */
+STATIC void
+xfs_extent_free_cancel_item(
+	struct list_head		*item)
+{
+	struct xfs_extent_free_item	*free;
+
+	free = container_of(item, struct xfs_extent_free_item, xefi_list);
+	kmem_free(free);
+}
+
+static const struct xfs_defer_op_type xfs_extent_free_defer_type = {
+	.type		= XFS_DEFER_OPS_TYPE_FREE,
+	.max_items	= XFS_EFI_MAX_FAST_EXTENTS,
+	.diff_items	= xfs_extent_free_diff_items,
+	.create_intent	= xfs_extent_free_create_intent,
+	.abort_intent	= xfs_extent_free_abort_intent,
+	.log_item	= xfs_extent_free_log_item,
+	.create_done	= xfs_extent_free_create_done,
+	.finish_item	= xfs_extent_free_finish_item,
+	.cancel_item	= xfs_extent_free_cancel_item,
+};
+
+/* Register the deferred op type. */
+void
+xfs_extent_free_init_defer_op(void)
+{
+	xfs_defer_init_op_type(&xfs_extent_free_defer_type);
+}