ocfs2: reserve inline space for extended attribute

Add the structures and helper functions we want for handling inline extended
attributes. We also update the inline-data handlers so that they properly
function in the event that we have both inline data and inline attributes
sharing an inode block.

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

1 files changed, 16 insertions, 6 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index e45421fee204..ace27d1ca574 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -6577,20 +6577,29 @@ out:
         return ret;
 }
 
-static void ocfs2_zero_dinode_id2(struct inode *inode, struct ocfs2_dinode *di)
+static void ocfs2_zero_dinode_id2_with_xattr(struct inode *inode,
+                                             struct ocfs2_dinode *di)
 {
         unsigned int blocksize = 1 << inode->i_sb->s_blocksize_bits;
+        unsigned int xattrsize = le16_to_cpu(di->i_xattr_inline_size);
 
-        memset(&di->id2, 0, blocksize - offsetof(struct ocfs2_dinode, id2));
+        if (le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_XATTR_FL)
+                memset(&di->id2, 0, blocksize -
+                                    offsetof(struct ocfs2_dinode, id2) -
+                                    xattrsize);
+        else
+                memset(&di->id2, 0, blocksize -
+                                    offsetof(struct ocfs2_dinode, id2));
 }
 
 void ocfs2_dinode_new_extent_list(struct inode *inode,
                                   struct ocfs2_dinode *di)
 {
-        ocfs2_zero_dinode_id2(inode, di);
+        ocfs2_zero_dinode_id2_with_xattr(inode, di);
         di->id2.i_list.l_tree_depth = 0;
         di->id2.i_list.l_next_free_rec = 0;
-        di->id2.i_list.l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(inode->i_sb));
+        di->id2.i_list.l_count = cpu_to_le16(
+                ocfs2_extent_recs_per_inode_with_xattr(inode->i_sb, di));
 }
 
 void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di)
@@ -6607,9 +6616,10 @@ void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di)
          * We clear the entire i_data structure here so that all
          * fields can be properly initialized.
          */
-        ocfs2_zero_dinode_id2(inode, di);
+        ocfs2_zero_dinode_id2_with_xattr(inode, di);
 
-        idata->id_count = cpu_to_le16(ocfs2_max_inline_data(inode->i_sb));
+        idata->id_count = cpu_to_le16(
+                        ocfs2_max_inline_data_with_xattr(inode->i_sb, di));
 }
 
 int ocfs2_convert_inline_data_to_extents(struct inode *inode,