diff options
Diffstat (limited to 'config/spl-build.m4')
| -rw-r--r-- | config/spl-build.m4 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/config/spl-build.m4 b/config/spl-build.m4 index 08b84efe9..eef52334f 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -93,6 +93,7 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_SCHED_RT_HEADER SPL_AC_2ARGS_VFS_GETATTR SPL_AC_USLEEP_RANGE + SPL_AC_KMEM_CACHE_ALLOCFLAGS ]) AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ @@ -2532,3 +2533,40 @@ AC_DEFUN([SPL_AC_USLEEP_RANGE], [ AC_MSG_RESULT(no) ]) ]) + +dnl # +dnl # 2.6.35 API change, +dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are +dnl # private allocation flags which are applied when allocating a new slab +dnl # in kmem_getpages(). Unfortunately there is no public API for setting +dnl # non-default flags. +dnl # +AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ + AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/slab.h> + ],[ + struct kmem_cache cachep __attribute__ ((unused)); + cachep.allocflags = GFP_KERNEL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1, + [struct kmem_cache has allocflags]) + ],[ + AC_MSG_RESULT(no) + + AC_MSG_CHECKING([whether struct kmem_cache has gfpflags]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/slab.h> + ],[ + struct kmem_cache cachep __attribute__ ((unused)); + cachep.gfpflags = GFP_KERNEL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1, + [struct kmem_cache has gfpflags]) + ],[ + AC_MSG_RESULT(no) + ]) + ]) +]) |