diff options
Diffstat (limited to 'config/kernel-dentry-operations.m4')
| -rw-r--r-- | config/kernel-dentry-operations.m4 | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/config/kernel-dentry-operations.m4 b/config/kernel-dentry-operations.m4 new file mode 100644 index 000000000..5685b7d6f --- /dev/null +++ b/config/kernel-dentry-operations.m4 @@ -0,0 +1,64 @@ +dnl # +dnl # 3.6 API change +dnl # +AC_DEFUN([ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA], [ + AC_MSG_CHECKING([whether dops->d_revalidate() takes struct nameidata]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/dcache.h> + ],[ + int (*revalidate) (struct dentry *, struct nameidata *) = NULL; + struct dentry_operations dops __attribute__ ((unused)) = { + .d_revalidate = revalidate, + }; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_D_REVALIDATE_NAMEIDATA, 1, + [dops->d_revalidate() operation takes nameidata]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # 2.6.30 API change +dnl # The 'struct dentry_operations' was constified in the dentry structure. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_CONST_DENTRY_OPERATIONS], [ + AC_MSG_CHECKING([whether dentry uses const struct dentry_operations]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/dcache.h> + + const struct dentry_operations test_d_op = { + .d_revalidate = NULL, + }; + ],[ + struct dentry d __attribute__ ((unused)); + + d.d_op = &test_d_op; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_CONST_DENTRY_OPERATIONS, 1, + [dentry uses const struct dentry_operations]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # 2.6.38 API change +dnl # Added d_set_d_op() helper function. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_D_SET_D_OP], + [AC_MSG_CHECKING([whether d_set_d_op() is available]) + ZFS_LINUX_TRY_COMPILE_SYMBOL([ + #include <linux/dcache.h> + ], [ + d_set_d_op(NULL, NULL); + ], [d_set_d_op], [fs/dcache.c], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_D_SET_D_OP, 1, + [d_set_d_op() is available]) + ], [ + AC_MSG_RESULT(no) + ]) +]) |