freebsd-dev/config/kernel-fsync.m4
Brian Behlendorf 7268e1bec8 Linux 2.6.35 compat, fops->fsync()
The fsync() callback in the file_operations structure used to take
3 arguments.  The callback now only takes 2 arguments because the
dentry argument was determined to be unused by all consumers.  To
handle this a compatibility prototype was added to ensure the right
prototype is used.  Our implementation never used the dentry argument
either so it's just a matter of using the right prototype.
2011-02-11 09:05:51 -08:00

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dnl #
dnl # 2.6.35 API change
dnl # The dentry argument was deamed unused and dropped in 2.6.36.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_FSYNC_2ARGS], [
AC_MSG_CHECKING([whether fops->fsync() wants 2 args])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
int (*fsync) (struct file *, int datasync) = NULL;
struct file_operations fops;
fops.fsync = fsync;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_2ARGS_FSYNC, 1, [fops->fsync() want 2 args])
],[
AC_MSG_RESULT(no)
])
])