Update SAs when an inode is dirtied

[zfs.git] / config / kernel-dirty-inode.m4

diff --git a/config/kernel-dirty-inode.m4 b/config/kernel-dirty-inode.m4
new file mode 100644 (file)
index 0000000..2ededf1
--- /dev/null
+++ b/config/kernel-dirty-inode.m4
@@ -0,0 +1,23 @@
+dnl #
+dnl # 3.0 API change
+dnl # The sops->dirty_inode() callbacks were updated to take a flags
+dnl # argument.  This allows the greater control over whether the
+dnl # filesystem needs to push out a transaction or not.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_DIRTY_INODE_WITH_FLAGS], [
+       AC_MSG_CHECKING([whether sops->dirty_inode() wants flags])
+       ZFS_LINUX_TRY_COMPILE([
+               #include <linux/fs.h>
+       ],[
+               void (*dirty_inode) (struct inode *, int) = NULL;
+               struct super_operations sops __attribute__ ((unused));
+
+               sops.dirty_inode = dirty_inode;
+       ],[
+               AC_MSG_RESULT([yes])
+               AC_DEFINE(HAVE_DIRTY_INODE_WITH_FLAGS, 1,
+                       [sops->dirty_inode() wants flags])
+       ],[
+               AC_MSG_RESULT([no])
+       ])
+])