- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_FUNC_RELEASEPAGE_WITH_INT
-#
-# if ->releasepage() takes an int arg in 2.6.9
-# This kernel defines gfp_t (HAS_GFP_T) but doesn't use it for this function,
-# while others either don't have gfp_t or pass gfp_t as the parameter.
-#
-AC_DEFUN([LC_FUNC_RELEASEPAGE_WITH_INT],
-[AC_MSG_CHECKING([if releasepage has a int parameter])
-RELEASEPAGE_WITH_INT="`grep -c 'releasepage.*int' $LINUX/include/linux/fs.h`"
-if test "$RELEASEPAGE_WITH_INT" != 0 ; then
- AC_DEFINE(HAVE_RELEASEPAGE_WITH_INT, 1,
- [releasepage with int parameter])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-])
-
-
-#
-# LC_FUNC_ZAP_PAGE_RANGE
-#
-# if zap_page_range() takes a vma arg
-#
-AC_DEFUN([LC_FUNC_ZAP_PAGE_RANGE],
-[AC_MSG_CHECKING([if zap_page_range with vma parameter])
-ZAP_PAGE_RANGE_VMA="`grep -c 'zap_page_range.*struct vm_area_struct' $LINUX/include/linux/mm.h`"
-if test "$ZAP_PAGE_RANGE_VMA" != 0 ; then
- AC_DEFINE(ZAP_PAGE_RANGE_VMA, 1, [zap_page_range with vma parameter])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-])
-
-#
-# LC_FUNC_PDE
-#
-# if proc_fs.h defines PDE()
-#
-AC_DEFUN([LC_FUNC_PDE],
-[AC_MSG_CHECKING([if kernel defines PDE])
-HAVE_PDE="`grep -c 'proc_dir_entry..PDE' $LINUX/include/linux/proc_fs.h`"
-if test "$HAVE_PDE" != 0 ; then
- AC_DEFINE(HAVE_PDE, 1, [the kernel defines PDE])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-])
-
-#
-# LC_FUNC_FILEMAP_FDATASYNC
-#
-# if filemap_fdatasync() exists
-#
-AC_DEFUN([LC_FUNC_FILEMAP_FDATAWRITE],
-[AC_MSG_CHECKING([whether filemap_fdatawrite() is defined])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
-],[
- int (*foo)(struct address_space *)= filemap_fdatawrite;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_FILEMAP_FDATAWRITE, 1, [filemap_fdatawrite() found])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_FUNC_DIRECT_IO
-#
-# if direct_IO takes a struct file argument
-#
-AC_DEFUN([LC_FUNC_DIRECT_IO],
-[AC_MSG_CHECKING([if kernel passes struct file to direct_IO])
-HAVE_DIO_FILE="`grep -c 'direct_IO.*struct file' $LINUX/include/linux/fs.h`"
-if test "$HAVE_DIO_FILE" != 0 ; then
- AC_DEFINE(HAVE_DIO_FILE, 1, [the kernel passes struct file to direct_IO])
- AC_MSG_RESULT(yes)
-else
- AC_MSG_RESULT(no)
-fi
-])
-
-#
-# LC_HEADER_MM_INLINE
-#
-# RHEL kernels define page_count in mm_inline.h
-#
-AC_DEFUN([LC_HEADER_MM_INLINE],
-[AC_MSG_CHECKING([if kernel has mm_inline.h header])
-LB_LINUX_TRY_COMPILE([
- #include <linux/mm_inline.h>
-],[
- #ifndef page_count
- #error mm_inline.h does not define page_count
- #endif
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_MM_INLINE, 1, [mm_inline found])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_STRUCT_INODE
-#
-# if inode->i_alloc_sem exists
-#
-AC_DEFUN([LC_STRUCT_INODE],
-[AC_MSG_CHECKING([if struct inode has i_alloc_sem])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- #include <linux/version.h>
-],[
- #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,24))
- #error "down_read_trylock broken before 2.4.24"
- #endif
- struct inode i;
- return (char *)&i.i_alloc_sem - (char *)&i;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_I_ALLOC_SEM, 1, [struct inode has i_alloc_sem])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_FUNC_REGISTER_CACHE
-#
-# if register_cache() is defined by kernel
-#
-# There are two ways to shrink one customized cache in linux kernels. For the
-# kernels are prior than 2.6.5(?), register_cache() is used, and for latest
-# kernels, set_shrinker() is used instead.
-#
-AC_DEFUN([LC_FUNC_REGISTER_CACHE],
-[AC_MSG_CHECKING([if kernel defines cache pressure hook])
-LB_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
-],[
- shrinker_t shrinker;
-
- set_shrinker(1, shrinker);