fix #10, introduced by [11]

git-svn-id: svn://svn.lighttpd.net/xcache/trunk@59 c26eb9a1-5813-0410-bd6c-c2e55f420ca7
17 years ago · a712913101
parent 2fe9441b3c
commit a712913101
1 changed files with 1 additions and 1 deletions
--- a/mmap.c
+++ b/mmap.c
@ -80,7 +80,7 @@ void *xc_shm_to_readwrite(xc_shm_t *shm, void *p) /* {{{ */
 {
 	if (shm->diff) {
 		assert(xc_shm_is_readonly(p));
-		p = PTR_SUB(p, -shm->diff);
+		p = PTR_SUB(p, shm->diff);
 	}
 	assert(xc_shm_is_readwrite(p));
 	return p;