xfs: implement deferred bmbt map/unmap operations
Implement deferred versions of the inode block map/unmap functions.
These will be used in subsequent patches to make reflink operations
atomic.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
index 641e090..8d8e1b07 100644
--- a/fs/xfs/xfs_error.h
+++ b/fs/xfs/xfs_error.h
@@ -94,7 +94,8 @@
#define XFS_ERRTAG_RMAP_FINISH_ONE 23
#define XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE 24
#define XFS_ERRTAG_REFCOUNT_FINISH_ONE 25
-#define XFS_ERRTAG_MAX 26
+#define XFS_ERRTAG_BMAP_FINISH_ONE 26
+#define XFS_ERRTAG_MAX 27
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@@ -125,6 +126,7 @@
#define XFS_RANDOM_RMAP_FINISH_ONE 1
#define XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE 1
#define XFS_RANDOM_REFCOUNT_FINISH_ONE 1
+#define XFS_RANDOM_BMAP_FINISH_ONE 1
#ifdef DEBUG
extern int xfs_error_test_active;