Commit 47ae32d6a54955a041cdc30b06d0bb16e75f68d5 in mainline introduced
macro MNT_RELATIME to limit atime updates to frequency specified in the
mount option. This patch allows one to build ocfs2 with kernels having/not
having this change.
It should be noted that the functionality will not be available on kernels
not having the macro as the vfs support will be missing.
Signed-off-by: Sunil Mushran <[EMAIL PROTECTED]>
Signed-off-by: Joel Becker <[EMAIL PROTECTED]>
---
Makefile | 3 ++-
configure.in | 5 +++++
kapi-compat/include/relatime.h | 6 ++++++
3 files changed, 13 insertions(+), 1 deletions(-)
create mode 100644 kapi-compat/include/relatime.h
diff --git a/Makefile b/Makefile
index 5539d48..ea4b979 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,8 @@ KAPI_COMPAT_FILES = \
kapi-compat/include/register_sysctl.h \
kapi-compat/include/su_mutex.h \
kapi-compat/include/kobject.h \
- kapi-compat/include/cap.h
+ kapi-compat/include/cap.h \
+ kapi-compat/include/relatime.h
PATCH_FILES =
diff --git a/configure.in b/configure.in
index e58cc18..a792b2f 100644
--- a/configure.in
+++ b/configure.in
@@ -258,6 +258,11 @@ OCFS2_CHECK_KERNEL([struct splice_desc in splice.h],
splice.h,
, NO_SPLICE_HEADER=yes, [^struct splice_desc ])
AC_SUBST(NO_SPLICE_HEADER)
+relatime_compat_header=""
+OCFS2_CHECK_KERNEL([MNT_RELATIME in mount.h], mount.h,
+ , relatime_compat_header="relatime.h", [^#define MNT_RELATIME])
+KAPI_COMPAT_HEADERS="$KAPI_COMPAT_HEADERS $relatime_compat_header"
+
# using -include has two advantages:
# the source doesn't need to know to include compat headers
# the compat header file names don't go through the search path
diff --git a/kapi-compat/include/relatime.h b/kapi-compat/include/relatime.h
new file mode 100644
index 0000000..34c5d38
--- /dev/null
+++ b/kapi-compat/include/relatime.h
@@ -0,0 +1,6 @@
+#ifndef KAPI_RELATIME_H
+#define KAPI_RELATIME_H
+
+#define MNT_RELATIME 0x20
+
+#endif
--
1.5.2.5
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