diff --git a/[refs] b/[refs]
index c4faea66cfa2..03953053a3dc 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 59345374742ee6673c2d04b0fa8c888e881b7209
+refs/heads/master: 5c81a4197de38411fe3e27f8593fff73a5d6b868
diff --git a/trunk/fs/ext2/super.c b/trunk/fs/ext2/super.c
index 9f43879d6d68..f2702cda9779 100644
--- a/trunk/fs/ext2/super.c
+++ b/trunk/fs/ext2/super.c
@@ -1157,7 +1157,7 @@ static ssize_t ext2_quota_write(struct super_block *sb, int type,
 	struct buffer_head tmp_bh;
 	struct buffer_head *bh;
 
-	mutex_lock(&inode->i_mutex);
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
 	while (towrite > 0) {
 		tocopy = sb->s_blocksize - offset < towrite ?
 				sb->s_blocksize - offset : towrite;
diff --git a/trunk/fs/ext3/super.c b/trunk/fs/ext3/super.c
index f2dd71336612..813d589cc6c0 100644
--- a/trunk/fs/ext3/super.c
+++ b/trunk/fs/ext3/super.c
@@ -2614,7 +2614,7 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type,
 	struct buffer_head *bh;
 	handle_t *handle = journal_current_handle();
 
-	mutex_lock(&inode->i_mutex);
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
 	while (towrite > 0) {
 		tocopy = sb->s_blocksize - offset < towrite ?
 				sb->s_blocksize - offset : towrite;
diff --git a/trunk/fs/reiserfs/super.c b/trunk/fs/reiserfs/super.c
index 28eb3c886034..5567328f1041 100644
--- a/trunk/fs/reiserfs/super.c
+++ b/trunk/fs/reiserfs/super.c
@@ -2203,7 +2203,7 @@ static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
 	size_t towrite = len;
 	struct buffer_head tmp_bh, *bh;
 
-	mutex_lock(&inode->i_mutex);
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
 	while (towrite > 0) {
 		tocopy = sb->s_blocksize - offset < towrite ?
 		    sb->s_blocksize - offset : towrite;
diff --git a/trunk/fs/ufs/super.c b/trunk/fs/ufs/super.c
index 19a99726e58d..992ee0b87cc3 100644
--- a/trunk/fs/ufs/super.c
+++ b/trunk/fs/ufs/super.c
@@ -1326,7 +1326,7 @@ static ssize_t ufs_quota_write(struct super_block *sb, int type,
 	size_t towrite = len;
 	struct buffer_head *bh;
 
-	mutex_lock(&inode->i_mutex);
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
 	while (towrite > 0) {
 		tocopy = sb->s_blocksize - offset < towrite ?
 				sb->s_blocksize - offset : towrite;