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Diffstat (limited to 'config/kernel-kmap-atomic-args.m4')
| -rw-r--r-- | config/kernel-kmap-atomic-args.m4 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/config/kernel-kmap-atomic-args.m4 b/config/kernel-kmap-atomic-args.m4 new file mode 100644 index 000000000..beb1692e7 --- /dev/null +++ b/config/kernel-kmap-atomic-args.m4 @@ -0,0 +1,20 @@ +dnl # +dnl # 2.6.37 API change +dnl # kmap_atomic changed from assigning hard-coded named slot to using +dnl # push/pop based dynamical allocation. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS], [ + AC_MSG_CHECKING([whether kmap_atomic wants 1 args]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/pagemap.h> + ],[ + struct page page; + kmap_atomic(&page); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_1ARG_KMAP_ATOMIC, 1, + [kmap_atomic wants 1 args]) + ],[ + AC_MSG_RESULT(no) + ]) +]) |