From: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
commit 6519f708cc355c4834edbe1885c8542c0e7ef907 uptream.
[ Slightly modify fs/xfs/xfs_linux.h to resolve merge conflicts ]
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@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
Acked-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/xfs_error.c | 2 +-
fs/xfs/xfs_linux.h | 6 ++++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index e9acd58248f9..182b70464b71 100644
--- 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 f4f52ac5628c..4f6f09157f0d 100644
--- a/fs/xfs/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -217,6 +217,12 @@ int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
#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
--
2.39.1
