[PATCH 3/7] xfs_io: dump new atomic_write_unit_max_opt statx field

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

Dump the new atomic writes statx field that's being submitted for 6.16.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
---
 libfrog/statx.h       |    6 +++++-
 io/stat.c             |    1 +
 m4/package_libcdev.m4 |    2 +-
 3 files changed, 7 insertions(+), 2 deletions(-)


diff --git a/libfrog/statx.h b/libfrog/statx.h
index b76dfae21e7092..e11e2d8f49fa5f 100644
--- a/libfrog/statx.h
+++ b/libfrog/statx.h
@@ -143,7 +143,11 @@ struct statx {
 	__u32	stx_dio_read_offset_align;
 
 	/* 0xb8 */
-	__u64	__spare3[9];	/* Spare space for future expansion */
+	/* Optimised max atomic write unit in bytes */
+	__u32	stx_atomic_write_unit_max_opt;
+	__u32	__spare2[1];
+	/* 0xc0 */
+	__u64	__spare3[8];	/* Spare space for future expansion */
 	/* 0x100 */
 };
 
diff --git a/io/stat.c b/io/stat.c
index 46475df343470c..c257037aa8eec3 100644
--- a/io/stat.c
+++ b/io/stat.c
@@ -396,6 +396,7 @@ dump_raw_statx(struct statx *stx)
 	printf("stat.atomic_write_unit_max = %u\n", stx->stx_atomic_write_unit_max);
 	printf("stat.atomic_write_segments_max = %u\n", stx->stx_atomic_write_segments_max);
 	printf("stat.dio_read_offset_align = %u\n", stx->stx_dio_read_offset_align);
+	printf("stat.atomic_write_unit_max_opt = %u\n", stx->stx_atomic_write_unit_max_opt);
 	return 0;
 }
 
diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
index 61353d0aa9d536..b77ac1a7580a80 100644
--- a/m4/package_libcdev.m4
+++ b/m4/package_libcdev.m4
@@ -126,7 +126,7 @@ AC_DEFUN([AC_NEED_INTERNAL_FSCRYPT_POLICY_V2],
 AC_DEFUN([AC_NEED_INTERNAL_STATX],
   [ AC_CHECK_TYPE(struct statx,
       [
-        AC_CHECK_MEMBER(struct statx.stx_dio_read_offset_align,
+        AC_CHECK_MEMBER(struct statx.stx_atomic_write_unit_max_opt,
           ,
           need_internal_statx=yes,
           [#include <linux/stat.h>]