linux-splice-support-20071106

[openafs.git] / src / cf / linux-test4.m4

diff --git a/src/cf/linux-test4.m4 b/src/cf/linux-test4.m4
index 659edaf..36dce1a 100644 (file)
--- a/src/cf/linux-test4.m4
+++ b/src/cf/linux-test4.m4
@@ -913,3 +913,15 @@ AC_DEFUN([LINUX_HAVE_SVC_ADDR_IN], [
       ac_cv_linux_have_svc_addr_in=no)])
   AC_MSG_RESULT($ac_cv_linux_have_svc_addr_in)])
 
+AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SPLICE], [
+  AC_MSG_CHECKING([for splice_write and splice_read in struct file_operations])
+  AC_CACHE_VAL([ac_cv_linux_fs_struct_fop_has_splice], [
+    AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct file_operations _fop;
+_fop.splice_write(NULL, NULL, NULL, 0, 0);
+_fop.splice_read(NULL, NULL, NULL, 0, 0);],
+      ac_cv_linux_fs_struct_fop_has_splice=yes,
+      ac_cv_linux_fs_struct_fop_has_splice=no)])
+  AC_MSG_RESULT($ac_cv_linux_fs_struct_fop_has_splice)])
+