(This is the ported SPL part of this patch)
totalram_pages() was converted to an atomic variable in 5.0:
https://patchwork.kernel.org/patch/
10652795/
Its value should now be read though the totalram_pages() helper
function.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #8263
--- /dev/null
+dnl #
+dnl # Linux 5.0: totalram_pages is no longer a global variable, and must be
+dnl # read via the totalram_pages() helper function.
+dnl #
+AC_DEFUN([SPL_AC_KERNEL_TOTALRAM_PAGES_FUNC], [
+ AC_MSG_CHECKING([whether totalram_pages() exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ unsigned long pages __attribute__ ((unused));
+ pages = totalram_pages();
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_TOTALRAM_PAGES_FUNC, 1, [kernel has totalram_pages()])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
SPL_AC_KERNEL_READ
SPL_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST
SPL_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64
+ SPL_AC_KERNEL_TOTALRAM_PAGES_FUNC
])
AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
#include <sys/types.h>
#include <asm/uaccess.h>
+#ifdef HAVE_TOTALRAM_PAGES_FUNC
+#define zfs_totalram_pages totalram_pages()
+#else
+#define zfs_totalram_pages totalram_pages
+#endif
+
#define membar_producer() smp_wmb()
-#define physmem totalram_pages
+#define physmem zfs_totalram_pages
#define freemem (nr_free_pages() + \
global_page_state(NR_INACTIVE_FILE) + \
global_page_state(NR_INACTIVE_ANON) + \