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authorJoel Becker <joel.becker@oracle.com>2008-12-09 14:24:33 -0800
committerMark Fasheh <mfasheh@suse.com>2009-01-05 08:40:32 -0800
commit2a50a743bdaab104155bd9e988d2ba3bb4177263 (patch)
treea330bfffe09dfca4340075bd9c44f632a3284469 /fs/ocfs2/xattr.h
parent4d0e214ee83185fcaa2cb97cd026d32bdc5c994a (diff)
downloadlinux-2.6.38-lt-ux500-2a50a743bdaab104155bd9e988d2ba3bb4177263.tar.gz
ocfs2: Create ocfs2_xattr_value_buf.
When an ocfs2 extended attribute is large enough to require its own allocation tree, we root it with an ocfs2_xattr_value_root. However, these roots can be a part of inodes, xattr blocks, or xattr buckets. Thus, they need a different journal access function for each container. We wrap the bh, its journal access function, and the value root (xv) in a structure called ocfs2_xattr_valu_buf. This is a package that can be passed around. In this first pass, we simply pass it to the extent tree code. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/xattr.h')
-rw-r--r--fs/ocfs2/xattr.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index 9a67e7d8f81..5a1ebc789f7 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -70,4 +70,18 @@ int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
int, struct ocfs2_security_xattr_info *,
int *, int *, struct ocfs2_alloc_context **);
+/*
+ * xattrs can live inside an inode, as part of an external xattr block,
+ * or inside an xattr bucket, which is the leaf of a tree rooted in an
+ * xattr block. Some of the xattr calls, especially the value setting
+ * functions, want to treat each of these locations as equal. Let's wrap
+ * them in a structure that we can pass around instead of raw buffer_heads.
+ */
+struct ocfs2_xattr_value_buf {
+ struct buffer_head *vb_bh;
+ ocfs2_journal_access_func vb_access;
+ struct ocfs2_xattr_value_root *vb_xv;
+};
+
+
#endif /* OCFS2_XATTR_H */