[PATCH] xfs: Fix xfs_dir2_sf_entry_t size check

[Vincenzo Frascino]

xfs_check_ondisk_structs() verifies that the sizes of the data types
used by xfs are correct via the XFS_CHECK_STRUCT_SIZE() macro.

xfs_dir2_sf_entry_t size is set erroneously to 3 which breaks the
compilation with the assertion below:

In file included from linux/include/linux/string.h:6,
                 from linux/include/linux/uuid.h:12,
                 from linux/fs/xfs/xfs_linux.h:10,
                 from linux/fs/xfs/xfs.h:22,
                 from linux/fs/xfs/xfs_super.c:7:
In function âxfs_check_ondisk_structsâ,
    inlined from âinit_xfs_fsâ at linux/fs/xfs/xfs_super.c:2025:2:
linux/include/linux/compiler.h:350:38:
    error: call to â__compiletime_assert_107â declared with attribute
    error: XFS: sizeof(xfs_dir2_sf_entry_t) is wrong, expected 3
    _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)

Restore the correct behavior defining the correct size.

Cc: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
---
 fs/xfs/xfs_ondisk.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h
index b6701b4f59a9..ee487ddc60c7 100644
--- a/fs/xfs/xfs_ondisk.h
+++ b/fs/xfs/xfs_ondisk.h
@@ -104,7 +104,7 @@ xfs_check_ondisk_structs(void)
 	XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_hdr_t,		16);
 	XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_t,			16);
 	XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_tail_t,		4);
-	XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t,		3);
+	XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t,		4);
 	XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, namelen,		0);
 	XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, offset,		1);
 	XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, name,		3);
-- 
2.24.1