lustre/kernel_patches/patches/ext3-extents-in-ea-exports-symbol-2.6.7.patch

   1 Index: linux-2.6.7/fs/ext3/extents-in-ea.c
   2 ===================================================================
   3 --- linux-2.6.7.orig/fs/ext3/extents-in-ea.c    2004-08-13 08:58:28.000000000 +0800
   4 +++ linux-2.6.7/fs/ext3/extents-in-ea.c 2004-08-13 08:58:34.000000000 +0800
   5 @@ -115,7 +115,7 @@
   6         kfree(root);
   7         return err;
   8  }
   9 -
  10 +EXPORT_SYMBOL(ext3_init_tree_in_ea);
  11  static int
  12  ext3_ext_in_ea_new_extent(struct ext3_extents_tree *tree,
  13                         struct ext3_ext_path *path,
  14 @@ -173,7 +173,7 @@
  15         }
  16         return err;
  17  }
  18 -
  19 +EXPORT_SYMBOL(ext3_ext_in_ea_alloc_space);
  20  int ext3_ext_in_ea_remove_space(struct inode *inode, int name_index,
  21                                 const char *eaname, unsigned long from,
  22                                 unsigned long num)
  23 @@ -188,7 +188,7 @@
  24         }
  25         return err;
  26  }
  27 -
  28 +EXPORT_SYMBOL(ext3_ext_in_ea_remove_space);
  29  int ext3_ext_in_ea_presence(struct inode *inode, int name_index,
  30                                 const char *eaname, unsigned long block)
  31  {
  32 @@ -331,3 +331,49 @@
  33         return err;
  34  }
  35
  36 +EXPORT_SYMBOL(ext3_ext_in_ea_ioctl);
  37 +int ext3_ext_in_ea_get_extents(struct inode *inode, int name_index,
  38 +                              const char *eaname, char **buf, int *size)
  39 +{
  40 +       /*allocate the buffer and put the extents there*/
  41 +       struct ext3_extents_tree tree;
  42 +       struct ext3_extent_buf ex_buf;
  43 +       int    err;
  44 +       err = ext3_init_tree_in_ea_desc(&tree, inode, name_index, eaname);
  45 +       if (err)
  46 +               goto out;
  47 +       ex_buf.cur = *buf;
  48 +       ex_buf.err = 0;
  49 +       tree.private = &ex_buf;
  50 +       ex_buf.start = 0;
  51 +
  52 +       err = ext3_ext_walk_space(&tree, ex_buf.start, EXT_MAX_BLOCK,
  53 +                                               ext3_ext_store_extent_cb);
  54 +       if (err == 0)
  55 +               err = ex_buf.err;
  56 +       ext3_release_tree_in_ea_desc(&tree);
  57 +out:
  58 +       return err;
  59 +}
  60 +EXPORT_SYMBOL(ext3_ext_in_ea_get_extents);
  61 +int ext3_ext_in_ea_get_extents_num(struct inode *inode, int name_index,
  62 +                                  const char *eaname, int *size)
  63 +{
  64 +       struct ext3_extents_tree tree;
  65 +       struct ext3_extent_tree_stats stats_buf;
  66 +       int    err = 0, ext_num;
  67 +       /*get extents number*/
  68 +       err = ext3_init_tree_in_ea_desc(&tree, inode, name_index, eaname);
  69 +       if (err)
  70 +               return err;
  71 +       tree.private = &stats_buf;
  72 +       err = ext3_ext_walk_space(&tree, 0, EXT_MAX_BLOCK,
  73 +                                 ext3_ext_collect_stats_cb);
  74 +       ext_num = stats_buf.extents_num;
  75 +       ext3_release_tree_in_ea_desc(&tree);
  76 +
  77 +       *size = ext_num * sizeof(struct ext3_extent);
  78 +
  79 +       return err;
  80 +}
  81 +EXPORT_SYMBOL(ext3_ext_in_ea_get_extents_num);
  82 Index: linux-2.6.7/fs/ext3/ioctl.c
  83 ===================================================================
  84 --- linux-2.6.7.orig/fs/ext3/ioctl.c    2004-08-13 08:58:28.000000000 +0800
  85 +++ linux-2.6.7/fs/ext3/ioctl.c 2004-08-13 08:58:34.000000000 +0800
  86 @@ -11,6 +11,7 @@
  87  #include <linux/jbd.h>
  88  #include <linux/ext3_fs.h>
  89  #include <linux/ext3_jbd.h>
  90 +#include <linux/ext3_extents.h>
  91  #include <linux/time.h>
  92  #include <asm/uaccess.h>
  93