From: Tao Ma <tao.ma@oracle.com>
Date: Wed, 19 Nov 2008 08:48:41 +0000 (+0800)
Subject: ocfs2/xattr: Fix a bug in xattr allocation estimation
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=97aff52ae13d3c11a074bbbfc80ad0b59cb8cdeb;p=openwrt%2Fstaging%2Fblogic.git

ocfs2/xattr: Fix a bug in xattr allocation estimation

When we extend one xattr's value to a large size, the old value size might
be smaller than the size of a value root. In those cases, we still need to
guess the metadata allocation.

Reported-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 8af29b3bd6de..d0b94edb9662 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2270,6 +2270,7 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
 								 value_size);
 			xv = (struct ocfs2_xattr_value_root *)
 			     (base + name_offset + name_len);
+			value_size = OCFS2_XATTR_ROOT_SIZE;
 		} else
 			xv = &def_xv.xv;
 
@@ -2283,7 +2284,8 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
 							     &xv->xr_list,
 							     new_clusters -
 							     old_clusters);
-			goto out;
+			if (value_size >= OCFS2_XATTR_ROOT_SIZE)
+				goto out;
 		}
 	} else {
 		/*