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-rw-r--r--include/linux/stat.h1
-rw-r--r--include/uapi/linux/stat.h4
2 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/stat.h b/include/linux/stat.h
index 52150570d37a..bf92441dbad2 100644
--- a/include/linux/stat.h
+++ b/include/linux/stat.h
@@ -53,6 +53,7 @@ struct kstat {
u32 dio_mem_align;
u32 dio_offset_align;
u64 change_cookie;
+ u64 subvol;
};
/* These definitions are internal to the kernel for now. Mainly used by nfsd. */
diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h
index 2f2ee82d5517..67626d535316 100644
--- a/include/uapi/linux/stat.h
+++ b/include/uapi/linux/stat.h
@@ -126,8 +126,9 @@ struct statx {
__u64 stx_mnt_id;
__u32 stx_dio_mem_align; /* Memory buffer alignment for direct I/O */
__u32 stx_dio_offset_align; /* File offset alignment for direct I/O */
+ __u64 stx_subvol; /* Subvolume identifier */
/* 0xa0 */
- __u64 __spare3[12]; /* Spare space for future expansion */
+ __u64 __spare3[11]; /* Spare space for future expansion */
/* 0x100 */
};
@@ -155,6 +156,7 @@ struct statx {
#define STATX_MNT_ID 0x00001000U /* Got stx_mnt_id */
#define STATX_DIOALIGN 0x00002000U /* Want/got direct I/O alignment info */
#define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */
+#define STATX_SUBVOL 0x00008000U /* Want/got stx_subvol */
#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */