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dnl #
dnl # 4.7 API change
dnl # i_mutex is changed to i_rwsem. Instead of directly using
dnl # i_mutex/i_rwsem, we should use inode_lock() and inode_lock_shared()
dnl # We test inode_lock_shared because inode_lock is introduced earlier.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_LOCK], [
ZFS_LINUX_TEST_SRC([inode_lock], [
#include <linux/fs.h>
],[
struct inode *inode = NULL;
inode_lock_shared(inode);
])
])
AC_DEFUN([ZFS_AC_KERNEL_INODE_LOCK], [
AC_MSG_CHECKING([whether inode_lock_shared() exists])
ZFS_LINUX_TEST_RESULT([inode_lock], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes])
],[
AC_MSG_RESULT(no)
])
])
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