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Linux 5.0 compat: Use totalram_pages()

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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
This commit is contained in:
Tony Hutter
2019-01-10 14:28:10 -08:00
committed by Brian Behlendorf
parent 77e50c3070
commit 031cea17a3
4 changed files with 28 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/kernel-totalram-pages-func.m4
+18
View File
@@ -0,0 +1,18 @@
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([ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC], [
AC_MSG_CHECKING([whether totalram_pages() exists])
ZFS_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)
])
])
config/kernel.m4
+1
View File
@@ -163,6 +163,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_USERNS_CAPABILITIES
ZFS_AC_KERNEL_IN_COMPAT_SYSCALL
ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64
ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC
AS_IF([test "$LINUX_OBJ" != "$LINUX"], [
KERNEL_MAKE="$KERNEL_MAKE O=$LINUX_OBJ"