module: remove the SHF_ALLOC flag on the __versions section.

OK, the rest of this series was really intellectual masturbation.
This patch just takes off the SHF_ALLOC flag on __versions so we don't
keep them around after module load.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 kernel/module.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/module.c b/kernel/module.c
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2010,6 +2010,9 @@ static noinline struct module *load_modu
 		if (strncmp(secstrings+sechdrs[i].sh_name, ".exit", 5) == 0)
 			sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
 #endif
+		/* Don't keep __versions around; it's just for loading. */
+		if (strcmp(secstrings + sechdrs[i].sh_name, "__versions") == 0)
+			sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
 	}
 
 	modindex = find_sec(hdr, sechdrs, secstrings,