[PATCH 2/7] xfs: xfs_buf_corruption_error should take __this_address

["Darrick J. Wong" <darrick.wong@oracle.com>]

From: Darrick J. Wong <darrick.wong@oracle.com>

Add a xfs_failaddr_t parameter to this function so that callers can
potentially pass in (and therefore report) the exact point in the code
where we decided that a metadata buffer was corrupt.  This enables us to
wire it up to checking functions that have to run outside of verifiers.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_buf.c   |    2 +-
 fs/xfs/xfs_error.c |    5 +++--
 fs/xfs/xfs_error.h |    2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)


diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 9d26e37f78f5..28304dc751d8 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1593,7 +1593,7 @@ __xfs_buf_mark_corrupt(
 	ASSERT(bp->b_log_item == NULL ||
 	       !(bp->b_log_item->bli_flags & XFS_BLI_DIRTY));
 
-	xfs_buf_corruption_error(bp);
+	xfs_buf_corruption_error(bp, fa);
 	xfs_buf_stale(bp);
 }
 
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 57068d4ffba2..a21e9cc6516a 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -350,13 +350,14 @@ xfs_corruption_error(
  */
 void
 xfs_buf_corruption_error(
-	struct xfs_buf		*bp)
+	struct xfs_buf		*bp,
+	xfs_failaddr_t		fa)
 {
 	struct xfs_mount	*mp = bp->b_mount;
 
 	xfs_alert_tag(mp, XFS_PTAG_VERIFIER_ERROR,
 		  "Metadata corruption detected at %pS, %s block 0x%llx",
-		  __return_address, bp->b_ops->name, bp->b_bn);
+		  fa, bp->b_ops->name, bp->b_bn);
 
 	xfs_alert(mp, "Unmount and run xfs_repair");
 
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
index 31a5d321ba9a..1717b7508356 100644
--- a/fs/xfs/xfs_error.h
+++ b/fs/xfs/xfs_error.h
@@ -15,7 +15,7 @@ extern void xfs_corruption_error(const char *tag, int level,
 			struct xfs_mount *mp, const void *buf, size_t bufsize,
 			const char *filename, int linenum,
 			xfs_failaddr_t failaddr);
-void xfs_buf_corruption_error(struct xfs_buf *bp);
+void xfs_buf_corruption_error(struct xfs_buf *bp, xfs_failaddr_t fa);
 extern void xfs_buf_verifier_error(struct xfs_buf *bp, int error,
 			const char *name, const void *buf, size_t bufsz,
 			xfs_failaddr_t failaddr);