ocfs2: Return extent flags for xattr value tree.

With the new refcount tree, xattr value can also be refcounted
among multiple files. So return the appropriate extent flags
so that CoW can used it later.

Signed-off-by: Tao Ma <tao.ma@oracle.com>

3 files changed, 11 insertions, 5 deletions

diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 40b51056bb32..843db64e9d4a 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -541,7 +541,8 @@ static void ocfs2_relative_extent_offsets(struct super_block *sb,
 
 int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
                              u32 *p_cluster, u32 *num_clusters,
-                             struct ocfs2_extent_list *el)
+                             struct ocfs2_extent_list *el,
+                             unsigned int *extent_flags)
 {
         int ret = 0, i;
         struct buffer_head *eb_bh = NULL;
@@ -593,6 +594,9 @@ int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
                 *p_cluster = *p_cluster + coff;
                 if (num_clusters)
                         *num_clusters = ocfs2_rec_clusters(el, rec) - coff;
+
+                if (extent_flags)
+                        *extent_flags = rec->e_flags;
         }
 out:
         if (eb_bh)
diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h
index 9942f47efda7..e79d41c2c909 100644
--- a/fs/ocfs2/extent_map.h
+++ b/fs/ocfs2/extent_map.h
@@ -55,7 +55,8 @@ int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 
 int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
                              u32 *p_cluster, u32 *num_clusters,
-                             struct ocfs2_extent_list *el);
+                             struct ocfs2_extent_list *el,
+                             unsigned int *extent_flags);
 
 int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
                            struct buffer_head *bhs[], int flags,
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 1bf12c453f99..dda49c00362a 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -704,7 +704,7 @@ static int ocfs2_xattr_shrink_size(struct inode *inode,
         while (trunc_len) {
                 ret = ocfs2_xattr_get_clusters(inode, cpos, &phys_cpos,
                                                &alloc_size,
-                                               &vb->vb_xv->xr_list);
+                                               &vb->vb_xv->xr_list, NULL);
                 if (ret) {
                         mlog_errno(ret);
                         goto out;
@@ -959,7 +959,7 @@ static int ocfs2_xattr_get_value_outside(struct inode *inode,
         cpos = 0;
         while (cpos < clusters) {
                 ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
-                                               &num_clusters, el);
+                                               &num_clusters, el, NULL);
                 if (ret) {
                         mlog_errno(ret);
                         goto out;
@@ -1198,7 +1198,8 @@ static int __ocfs2_xattr_set_value_outside(struct inode *inode,
 
         while (cpos < clusters) {
                 ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
-                                               &num_clusters, &xv->xr_list);
+                                               &num_clusters, &xv->xr_list,
+                                               NULL);
                 if (ret) {
                         mlog_errno(ret);
                         goto out;