1 files changed, 3 insertions, 2 deletions

diff --git a/Documentation/filesystems/xfs.txt b/Documentation/filesystems/xfs.txt
index 7077103ac541..0bfafe108357 100644
--- a/Documentation/filesystems/xfs.txt
+++ b/Documentation/filesystems/xfs.txt
@@ -287,9 +287,9 @@ The following sysctls are available for the XFS filesystem:
                 XFS_ERRLEVEL_LOW:       1
                 XFS_ERRLEVEL_HIGH:      5
 
-  fs.xfs.panic_mask             (Min: 0  Default: 0  Max: 127)
+  fs.xfs.panic_mask             (Min: 0  Default: 0  Max: 255)
         Causes certain error conditions to call BUG(). Value is a bitmask;
-        AND together the tags which represent errors which should cause panics:
+        OR together the tags which represent errors which should cause panics:
 
                 XFS_NO_PTAG                     0
                 XFS_PTAG_IFLUSH                 0x00000001
@@ -299,6 +299,7 @@ The following sysctls are available for the XFS filesystem:
                 XFS_PTAG_SHUTDOWN_CORRUPT       0x00000010
                 XFS_PTAG_SHUTDOWN_IOERROR       0x00000020
                 XFS_PTAG_SHUTDOWN_LOGERROR      0x00000040
+                XFS_PTAG_FSBLOCK_ZERO           0x00000080
 
         This option is intended for debugging only.