xfs: allow bulkstat to return metadata directories

Source kernel commit: df866c538ff098baa210b407b822818a415a6e7e

Allow the V5 bulkstat ioctl to return information about metadata
directory files so that xfs_scrub can find and scrub them, since they
are otherwise ordinary directories.

(Metadata files of course require per-file scrub code and hence do not
need exposure.)

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index a42c1a33691c0f1ce64d89ccf36a41800835daf2..499bea4ea8067fe3127378feb728bc60ced027be 100644 (file)
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -490,9 +490,17 @@ struct xfs_bulk_ireq {
  */
 #define XFS_BULK_IREQ_NREXT64  (1U << 2)
 
+/*
+ * Allow bulkstat to return information about metadata directories.  This
+ * enables xfs_scrub to find them for scanning, as they are otherwise ordinary
+ * directories.
+ */
+#define XFS_BULK_IREQ_METADIR  (1U << 3)
+
 #define XFS_BULK_IREQ_FLAGS_ALL        (XFS_BULK_IREQ_AGNO |    \
                                 XFS_BULK_IREQ_SPECIAL | \
-                                XFS_BULK_IREQ_NREXT64)
+                                XFS_BULK_IREQ_NREXT64 | \
+                                XFS_BULK_IREQ_METADIR)
 
 /* Operate on the root directory inode. */
 #define XFS_BULK_IREQ_SPECIAL_ROOT     (1)