xfs: propagate bmap updates to rmapbt
When we map, unmap, or convert an extent in a file's data or attr
fork, schedule a respective update in the rmapbt. Previous versions
of this patch required a 1:1 correspondence between bmap and rmap,
but this is no longer true as we now have ability to make interval
queries against the rmapbt.
We use the deferred operations code to handle redo operations
atomically and deadlock free. This plumbs in all five rmap actions
(map, unmap, convert extent, alloc, free); we'll use the first three
now for file data, and reflink will want the last two. We also add
an error injection site to test log recovery.
Finally, we need to fix the bmap shift extent code to adjust the
rmaps correctly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
index da6f951..3d22470 100644
--- a/fs/xfs/xfs_error.h
+++ b/fs/xfs/xfs_error.h
@@ -91,7 +91,8 @@
#define XFS_ERRTAG_DIOWRITE_IOERR 20
#define XFS_ERRTAG_BMAPIFORMAT 21
#define XFS_ERRTAG_FREE_EXTENT 22
-#define XFS_ERRTAG_MAX 23
+#define XFS_ERRTAG_RMAP_FINISH_ONE 23
+#define XFS_ERRTAG_MAX 24
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@@ -119,6 +120,7 @@
#define XFS_RANDOM_DIOWRITE_IOERR (XFS_RANDOM_DEFAULT/10)
#define XFS_RANDOM_BMAPIFORMAT XFS_RANDOM_DEFAULT
#define XFS_RANDOM_FREE_EXTENT 1
+#define XFS_RANDOM_RMAP_FINISH_ONE 1
#ifdef DEBUG
extern int xfs_error_test_active;