kill struct filename.separate
just make const char iname[] the last member and compare name->name with
name->iname instead of checking name->separate
We need to make sure that out-of-line name doesn't end up allocated adjacent
to struct filename refering to it; fortunately, it's easy to achieve - just
allocate that struct filename with one byte in ->iname[], so that ->iname[0]
will be inside the same object and thus have an address different from that
of out-of-line name [spotted by Boqun Feng <boqun.feng@gmail.com>]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b4d71b5..d70e333 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2144,7 +2144,7 @@
const __user char *uptr; /* original userland pointer */
struct audit_names *aname;
int refcnt;
- bool separate; /* should "name" be freed? */
+ const char iname[];
};
extern long vfs_truncate(struct path *, loff_t);