xfs: report corruption only as a regular error

Redefine XFS_IS_CORRUPT so that it reports corruptions only via
xfs_corruption_report.  Since these are on-disk contents (and not checks
of internal state), we don't ever want to panic the kernel.  This also
amends the corruption report to recommend unmounting and running
xfs_repair.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 51dd1f4..331765a 100644 (file)
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -335,7 +335,7 @@ xfs_corruption_error(
        int                     linenum,
        xfs_failaddr_t          failaddr)
 {
-       if (level <= xfs_error_level)
+       if (buf && level <= xfs_error_level)
                xfs_hex_dump(buf, bufsize);
        xfs_error_report(tag, level, mp, filename, linenum, failaddr);
        xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");

diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
index 64bbbcc..8738bb0 100644 (file)
--- a/fs/xfs/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -229,10 +229,6 @@ int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
 #define ASSERT(expr)   \
        (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
 
-#define XFS_IS_CORRUPT(mp, expr)       \
-       (unlikely(expr) ? assfail((mp), #expr, __FILE__, __LINE__), \
-                         true : false)
-
 #else  /* !DEBUG */
 
 #ifdef XFS_WARN
@@ -240,20 +236,19 @@ int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
 #define ASSERT(expr)   \
        (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
 
-#define XFS_IS_CORRUPT(mp, expr)       \
-       (unlikely(expr) ? asswarn((mp), #expr, __FILE__, __LINE__), \
-                         true : false)
-
 #else  /* !DEBUG && !XFS_WARN */
 
 #define ASSERT(expr)           ((void)0)
-#define XFS_IS_CORRUPT(mp, expr)       \
-       (unlikely(expr) ? XFS_ERROR_REPORT(#expr, XFS_ERRLEVEL_LOW, (mp)), \
-                         true : false)
 
 #endif /* XFS_WARN */
 #endif /* DEBUG */
 
+#define XFS_IS_CORRUPT(mp, expr)       \
+       (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
+                                              NULL, 0, __FILE__, __LINE__, \
+                                              __this_address), \
+                         true : false)
+
 #define STATIC static noinline
 
 #ifdef CONFIG_XFS_RT