ocfs2: Add extended attribute support

This patch implements storing extended attributes both in inode or a single
external block. We only store EA's in-inode when blocksize > 512 or that
inode block has free space for it. When an EA's value is larger than 80
bytes, we will store the value via b-tree outside inode or block.

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

1 files changed, 13 insertions, 4 deletions

diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index bb774d70d268..f1871ca83815 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -493,9 +493,9 @@ bail:
         return status;
 }
 
-int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
-                               struct ocfs2_extent_list *root_el,
-                               struct ocfs2_alloc_context **ac)
+int ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb,
+                                      int blocks,
+                                      struct ocfs2_alloc_context **ac)
 {
         int status;
         u32 slot;
@@ -507,7 +507,7 @@ int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
                 goto bail;
         }
 
-        (*ac)->ac_bits_wanted = ocfs2_extend_meta_needed(root_el);
+        (*ac)->ac_bits_wanted = blocks;
         (*ac)->ac_which = OCFS2_AC_USE_META;
         slot = osb->slot_num;
         (*ac)->ac_group_search = ocfs2_block_group_search;
@@ -532,6 +532,15 @@ bail:
         return status;
 }
 
+int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
+                               struct ocfs2_extent_list *root_el,
+                               struct ocfs2_alloc_context **ac)
+{
+        return ocfs2_reserve_new_metadata_blocks(osb,
+                                        ocfs2_extend_meta_needed(root_el),
+                                        ac);
+}
+
 static int ocfs2_steal_inode_from_other_nodes(struct ocfs2_super *osb,
                                               struct ocfs2_alloc_context *ac)
 {