libext2fs: fix missing unlocks in the error path in unix_set_blksize()

https://github.com/tytso/e2fsprogs/pull/83

Signed-off-by: Ryan Cai <ryancaicse@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
index d251c20..50ac737 100644 (file)
--- a/lib/ext2fs/unix_io.c
+++ b/lib/ext2fs/unix_io.c
@@ -957,8 +957,11 @@ static errcode_t unix_set_blksize(io_channel channel, int blksize)
                mutex_lock(data, CACHE_MTX);
                mutex_lock(data, BOUNCE_MTX);
 #ifndef NO_IO_CACHE
-               if ((retval = flush_cached_blocks(channel, data, FLUSH_NOLOCK)))
+               if ((retval = flush_cached_blocks(channel, data, FLUSH_NOLOCK))){
+                       mutex_unlock(data, BOUNCE_MTX);
+                       mutex_unlock(data, CACHE_MTX);
                        return retval;
+               }
 #endif
 
                channel->block_size = blksize;