89 lines
2 KiB
Text
89 lines
2 KiB
Text
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dnl #
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dnl # 3.6 API change
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA], [
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AC_MSG_CHECKING([whether dops->d_revalidate() takes struct nameidata])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/dcache.h>
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#include <linux/sched.h>
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int revalidate (struct dentry *dentry,
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struct nameidata *nidata) { return 0; }
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static const struct dentry_operations
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dops __attribute__ ((unused)) = {
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.d_revalidate = revalidate,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_D_REVALIDATE_NAMEIDATA, 1,
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[dops->d_revalidate() operation takes nameidata])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.30 API change
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dnl # The 'struct dentry_operations' was constified in the dentry structure.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_CONST_DENTRY_OPERATIONS], [
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AC_MSG_CHECKING([whether dentry uses const struct dentry_operations])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/dcache.h>
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const struct dentry_operations test_d_op = {
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.d_revalidate = NULL,
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};
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],[
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struct dentry d __attribute__ ((unused));
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d.d_op = &test_d_op;
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_CONST_DENTRY_OPERATIONS, 1,
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[dentry uses const struct dentry_operations])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.38 API change
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dnl # Added d_set_d_op() helper function.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_D_SET_D_OP],
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[AC_MSG_CHECKING([whether d_set_d_op() is available])
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ZFS_LINUX_TRY_COMPILE_SYMBOL([
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#include <linux/dcache.h>
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], [
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d_set_d_op(NULL, NULL);
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], [d_set_d_op], [fs/dcache.c], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_D_SET_D_OP, 1,
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[d_set_d_op() is available])
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], [
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.38 API chage
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dnl # Added sb->s_d_op default dentry_operations member
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_S_D_OP],
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[AC_MSG_CHECKING([whether super_block has s_d_op])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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],[
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struct super_block sb __attribute__ ((unused));
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sb.s_d_op = NULL;
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], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_S_D_OP, 1, [struct super_block has s_d_op])
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], [
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AC_MSG_RESULT(no)
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])
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])
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