On Fri, May 29, 2020 at 07:41:01AM +0000, Luis Chamberlain wrote:
This simplifies the code considerably. The following coccinelle SmPL grammar rule was used to transform this code.
// pycocci sysctl-subdir.cocci fs/ocfs2/stackglue.c
@c1@ expression E1; identifier subdir, sysctls; @@
static struct ctl_table subdir[] = { { .procname = E1, .maxlen = 0, .mode = 0555, .child = sysctls, }, { } };
@c2@ identifier c1.subdir;
expression E2; identifier base; @@
static struct ctl_table base[] = { { .procname = E2, .maxlen = 0, .mode = 0555, .child = subdir, }, { } };
@c3@ identifier c2.base; identifier header; @@
header = register_sysctl_table(base);
@r1 depends on c1 && c2 && c3@ expression c1.E1; identifier c1.subdir, c1.sysctls; @@
-static struct ctl_table subdir[] = {
- {
.procname = E1,.maxlen = 0,.mode = 0555,.child = sysctls,- },
- { }
-};
@r2 depends on c1 && c2 && c3@ identifier c1.subdir;
expression c2.E2; identifier c2.base; @@ -static struct ctl_table base[] = {
- {
.procname = E2,.maxlen = 0,.mode = 0555,.child = subdir,- },
- { }
-};
@r3 depends on c1 && c2 && c3@ expression c1.E1; identifier c1.sysctls; expression c2.E2; identifier c2.base; identifier c3.header; @@
header = -register_sysctl_table(base); +register_sysctl_subdir(E2, E1, sysctls);
Generated-by: Coccinelle SmPL
Signed-off-by: Luis Chamberlain mcgrof@kernel.org
fs/ocfs2/stackglue.c | 27 ++++----------------------- 1 file changed, 4 insertions(+), 23 deletions(-)
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index a191094694c6..addafced7f59 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -677,28 +677,8 @@ static struct ctl_table ocfs2_mod_table[] = { }, { } };
-static struct ctl_table ocfs2_kern_table[] = {
- {
.procname = "ocfs2",.data = NULL,.maxlen = 0,.mode = 0555,.child = ocfs2_mod_table- },
- { }
-};
-static struct ctl_table ocfs2_root_table[] = {
- {
.procname = "fs",.data = NULL,.maxlen = 0,.mode = 0555,.child = ocfs2_kern_table- },
- { }
-};
- .data = NULL,
- .data = NULL,
The conversion script doesn't like the .data field assignments. ;)
Was this series built with allmodconfig? I would have expected this to blow up very badly. :)