linux-kernel - [PATCH 44/45] ocfs2/xattr: Fix a bug in xattr allocation estimation

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Date:	Fri, 19 Dec 2008 13:54:03 -0800
From:	Mark Fasheh <mfasheh@...e.com>
To:	linux-kernel@...r.kernel.org
Cc:	ocfs2-devel@....oracle.com, Joel Becker <joel.becker@...cle.com>,
	Tao Ma <tao.ma@...cle.com>, Mark Fasheh <mfasheh@...e.com>
Subject: [PATCH 44/45] ocfs2/xattr: Fix a bug in xattr allocation estimation

From: Tao Ma <tao.ma@...cle.com>

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@...cle.com>
Signed-off-by: Tao Ma <tao.ma@...cle.com>
Signed-off-by: Mark Fasheh <mfasheh@...e.com>
---
 fs/ocfs2/xattr.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 8af29b3..d0b94ed 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 {
 		/*
-- 
1.5.6

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