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-rw-r--r--config/kernel-bio-rw-syncio.m439
1 files changed, 35 insertions, 4 deletions
diff --git a/config/kernel-bio-rw-syncio.m4 b/config/kernel-bio-rw-syncio.m4
index 2c80f5c0e..6f8b5b591 100644
--- a/config/kernel-bio-rw-syncio.m4
+++ b/config/kernel-bio-rw-syncio.m4
@@ -1,7 +1,24 @@
dnl #
-dnl # 2.6.29 API change
-dnl # BIO_RW_SYNC renamed to BIO_RW_SYNCIO
+dnl # Preferred interface for flagging a synchronous bio:
+dnl # 2.6.12-2.6.29: BIO_RW_SYNC
+dnl # 2.6.30-2.6.35: BIO_RW_SYNCIO
+dnl # 2.6.36-2.6.xx: REQ_SYNC
dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BIO_RW_SYNC], [
+ AC_MSG_CHECKING([whether BIO_RW_SYNC is defined])
+ ZFS_LINUX_TRY_COMPILE([
+ #include <linux/bio.h>
+ ],[
+ int flags;
+ flags = BIO_RW_SYNC;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_BIO_RW_SYNC, 1, [BIO_RW_SYNC is defined])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
AC_DEFUN([ZFS_AC_KERNEL_BIO_RW_SYNCIO], [
AC_MSG_CHECKING([whether BIO_RW_SYNCIO is defined])
ZFS_LINUX_TRY_COMPILE([
@@ -11,8 +28,22 @@ AC_DEFUN([ZFS_AC_KERNEL_BIO_RW_SYNCIO], [
flags = BIO_RW_SYNCIO;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_BIO_RW_SYNCIO, 1,
- [BIO_RW_SYNCIO is defined])
+ AC_DEFINE(HAVE_BIO_RW_SYNCIO, 1, [BIO_RW_SYNCIO is defined])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_REQ_SYNC], [
+ AC_MSG_CHECKING([whether REQ_SYNC is defined])
+ ZFS_LINUX_TRY_COMPILE([
+ #include <linux/bio.h>
+ ],[
+ int flags;
+ flags = REQ_SYNC;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_REQ_SYNC, 1, [REQ_SYNC is defined])
],[
AC_MSG_RESULT(no)
])