squashfs: fix locking bug in zlib wrapper

Fix locking bug in zlib wrapper introduced by recent decompressor changes.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>

diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c
index 15a03d0fb9f3a08d64bc85e7b53042757ad9c975..7a603874e483166022a58ee788d0877b99d4505f 100644 (file)
--- a/fs/squashfs/zlib_wrapper.c
+++ b/fs/squashfs/zlib_wrapper.c
@@ -128,8 +128,9 @@ static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
                goto release_mutex;
        }
 
+       length = stream->total_out;
        mutex_unlock(&msblk->read_data_mutex);
-       return stream->total_out;
+       return length;
 
 release_mutex:
        mutex_unlock(&msblk->read_data_mutex);