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Linux 3.10 compat: struct vmalloc_info moved 

Linux kernel commmit torvalds/linux@db3808c1 moved the
vmalloc_info structure from a private to a public header.
Now that it's available for kernel modules use it.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #257
This commit is contained in:
Yuxuan Shui 2013-05-14 08:31:53 +08:00 committed by Brian Behlendorf
parent 485b471eb2
commit c02ab72fb9
2 changed files with 22 additions and 0 deletions
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20
config/spl-build.m4
View File

@ -33,6 +33,7 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
SPL_AC_TASK_CURR
SPL_AC_CTL_UNNUMBERED
SPL_AC_CTL_NAME
SPL_AC_VMALLOC_INFO
SPL_AC_FLS64
SPL_AC_DEVICE_CREATE
SPL_AC_5ARGS_DEVICE_CREATE
@ -1357,6 +1358,25 @@ AC_DEFUN([SPL_AC_GET_VMALLOC_INFO],
])
])
dnl #
dnl # 3.10 API change,
dnl # struct vmalloc_info is now declared in linux/vmalloc.h
dnl #
AC_DEFUN([SPL_AC_VMALLOC_INFO], [
AC_MSG_CHECKING([whether struct vmalloc_info is declared])
SPL_LINUX_TRY_COMPILE([
#include <linux/vmalloc.h>
struct vmalloc_info { void *a; };
],[
return 0;
],[
AC_MSG_RESULT(no)
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_VMALLOC_INFO, 1, [yes])
])
])
dnl #
dnl # 2.6.17 API change
dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and

2
include/sys/vmsystm.h
View File

@ -74,10 +74,12 @@ extern size_t vmem_size(vmem_t *vmp, int typemask);
#ifndef HAVE_GET_VMALLOC_INFO
#ifdef CONFIG_MMU
#ifndef HAVE_VMALLOC_INFO
struct vmalloc_info {
unsigned long used;
unsigned long largest_chunk;
};
#endif
typedef void (*get_vmalloc_info_t)(struct vmalloc_info *);
extern get_vmalloc_info_t get_vmalloc_info_fn;