https://bugs.kde.org/show_bug.cgi?id=317127
--- Comment #21 from Mark Wielaard <m...@klomp.org> ---
Could we make it linux generic by just using __NR_statfs and struct statfs
(which seems defined for each linux arch already):
diff --git a/coregrind/m_aspacemgr/aspacemgr-linux.c
b/coregrind/m_aspacemgr/aspacemgr-linux.c
index 9362f65af3c8..3da68db381e1 100644
--- a/coregrind/m_aspacemgr/aspacemgr-linux.c
+++ b/coregrind/m_aspacemgr/aspacemgr-linux.c
@@ -891,6 +891,14 @@ static void sync_check_mapping_callback ( Addr addr, SizeT
len, UInt prot,
/* hack apparently needed on MontaVista Linux */
if (filename && VG_(strstr)(filename, "/.lib-ro/"))
cmp_devino = False;
+
+#if defined(VGO_linux)
+ struct vki_statfs statfs = {0};
+ SysRes res = VG_(do_syscall2)(__NR_statfs, (UWord)filename,
(UWord)&statfs);
+ if (!sr_isError(res) && statfs.f_type == VKI_BTRFS_SUPER_MAGIC) {
+ cmp_devino = False;
+ }
+#endif
#endif
/* If we are doing sloppy execute permission checks then we
diff --git a/include/vki/vki-linux.h b/include/vki/vki-linux.h
index be3d76690cee..708a12b64d03 100644
--- a/include/vki/vki-linux.h
+++ b/include/vki/vki-linux.h
@@ -5455,6 +5460,12 @@ struct vki_open_how {
#define VKI_CLOSE_RANGE_UNSHARE (1U << 1)
#define VKI_CLOSE_RANGE_CLOEXEC (1U << 2)
+//----------------------------------------------------------------------
+// From linux/magic.h
+//----------------------------------------------------------------------
+
+#define VKI_BTRFS_SUPER_MAGIC 0x9123683E
+
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
--
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