btrfs: constify structs with op functions or static definitions
There are some op tables that can be easily made const, similarly the
sysfs feature and raid tables. This is motivated by PaX CONSTIFY plugin.
Signed-off-by: David Sterba <dsterba@suse.cz>
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 695b0cc..c668f36 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -97,7 +97,7 @@
u64 dirty_bytes;
int track_uptodate;
spinlock_t lock;
- struct extent_io_ops *ops;
+ const struct extent_io_ops *ops;
};
struct extent_state {