xfs: add xfs_verifier_error()

[cascardo/linux.git] / fs / xfs / xfs_error.c

diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 9995b80..a8b2ecb 100644 (file)
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -178,3 +178,28 @@ xfs_corruption_error(
        xfs_error_report(tag, level, mp, filename, linenum, ra);
        xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
 }
+
+/*
+ * Warnings specifically for verifier errors.  Differentiate CRC vs. invalid
+ * values, and omit the stack trace unless the error level is tuned high.
+ */
+void
+xfs_verifier_error(
+       struct xfs_buf          *bp)
+{
+       struct xfs_mount *mp = bp->b_target->bt_mount;
+
+       xfs_alert(mp, "Metadata %s detected at %pF, block 0x%llx",
+                 bp->b_error == EFSBADCRC ? "CRC error" : "corruption",
+                 __return_address, bp->b_bn);
+
+       xfs_alert(mp, "Unmount and run xfs_repair");
+
+       if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
+               xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
+               xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
+       }
+
+       if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
+               xfs_stack_trace();
+}