compat: backport system_nrt_wq

[~emulex/for-vlad/old/compat.git] / compat / compat-2.6.27.c

diff --git a/compat/compat-2.6.27.c b/compat/compat-2.6.27.c
index 4fef36a..25bee28 100644 (file)
--- a/compat/compat-2.6.27.c
+++ b/compat/compat-2.6.27.c
@@ -9,9 +9,6 @@
  */
 
 #include <linux/compat.h>
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27))
-
 #include <linux/pci.h>
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24))
 #include <linux/mmc/sdio.h>
@@ -206,6 +203,37 @@ unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
 EXPORT_SYMBOL_GPL(sdio_align_size);
 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) */
 
+#ifdef CONFIG_DEBUG_FS
+/*
+ * Backport of debugfs_remove_recursive() without using the internals globals
+ * which are used by the kernel's version with:
+ * simple_release_fs(&debugfs_mount, &debugfs_mount_count);
+ */
+void debugfs_remove_recursive(struct dentry *dentry)
+{
+       struct dentry *last = NULL;
+
+       /* Sanity checks */
+       if (!dentry || !dentry->d_parent || !dentry->d_parent->d_inode)
+               return;
 
-#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27) */
+       while (dentry != last) {
+               struct dentry *child = dentry;
+
+               /* Find a child without children */
+               while (!list_empty(&child->d_subdirs))
+                       child = list_entry(child->d_subdirs.next,
+                                          struct dentry,
+                                          d_u.d_child);
+
+               /* Bail out if we already tried to remove that entry */
+               if (child == last)
+                       return;
+
+               last = child;
+               debugfs_remove(child);
+       }
+}
+EXPORT_SYMBOL_GPL(debugfs_remove_recursive);
+#endif /* CONFIG_DEBUG_FS */