This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / fs / stack.c

diff --git a/fs/stack.c b/fs/stack.c
new file mode 100644 (file)
index 0000000..8ffb880
--- /dev/null
+++ b/fs/stack.c
@@ -0,0 +1,38 @@
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/fs_stack.h>
+
+/* does _NOT_ require i_mutex to be held.
+ *
+ * This function cannot be inlined since i_size_{read,write} is rather
+ * heavy-weight on 32-bit systems
+ */
+void fsstack_copy_inode_size(struct inode *dst, const struct inode *src)
+{
+       i_size_write(dst, i_size_read((struct inode *)src));
+       dst->i_blocks = src->i_blocks;
+}
+EXPORT_SYMBOL_GPL(fsstack_copy_inode_size);
+
+/* copy all attributes; get_nlinks is optional way to override the i_nlink
+ * copying
+ */
+void fsstack_copy_attr_all(struct inode *dest, const struct inode *src,
+                               int (*get_nlinks)(struct inode *))
+{
+       if (!get_nlinks)
+               dest->i_nlink = src->i_nlink;
+       else
+               dest->i_nlink = (*get_nlinks)(dest);
+
+       dest->i_mode = src->i_mode;
+       dest->i_uid = src->i_uid;
+       dest->i_gid = src->i_gid;
+       dest->i_rdev = src->i_rdev;
+       dest->i_atime = src->i_atime;
+       dest->i_mtime = src->i_mtime;
+       dest->i_ctime = src->i_ctime;
+       dest->i_blkbits = src->i_blkbits;
+       dest->i_flags = src->i_flags;
+}
+EXPORT_SYMBOL_GPL(fsstack_copy_attr_all);