GFS2: Remove unused sysfs file

The /sys/fs/gfs2/<fsname>/lock_module/id file has been unused for
some time now, so we can remove it. We still accept the mount option
though, as userspace still sends that.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

3 files changed, 1 insertions, 14 deletions

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 52436abc3b4d..6edb423f90b3 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -496,7 +496,6 @@ struct gfs2_sb_host {
  */
 
 struct lm_lockstruct {
-        u32 ls_id;
         unsigned int ls_jid;
         unsigned int ls_first;
         unsigned int ls_first_done;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 8e3f00e1430d..52fb6c048981 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1028,7 +1028,6 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
 
         ls->ls_ops = lm;
         ls->ls_first = 1;
-        ls->ls_id = 0;
 
         for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) {
                 substring_t tmp[MAX_OPT_ARGS];
@@ -1046,10 +1045,7 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
                         ls->ls_jid = option;
                         break;
                 case Opt_id:
-                        ret = match_int(&tmp[0], &option);
-                        if (ret)
-                                goto hostdata_error;
-                        ls->ls_id = option;
+                        /* Obsolete, but left for backward compat purposes */
                         break;
                 case Opt_first:
                         ret = match_int(&tmp[0], &option);
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 0d4f7e974e9f..446329728d52 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -320,12 +320,6 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
         return ret;
 }
 
-static ssize_t lkid_show(struct gfs2_sbd *sdp, char *buf)
-{
-        struct lm_lockstruct *ls = &sdp->sd_lockstruct;
-        return sprintf(buf, "%u\n", ls->ls_id);
-}
-
 static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
 {
         struct lm_lockstruct *ls = &sdp->sd_lockstruct;
@@ -390,7 +384,6 @@ static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
 GDLM_ATTR(proto_name,           0444, proto_name_show,          NULL);
 GDLM_ATTR(block,                0644, block_show,               block_store);
 GDLM_ATTR(withdraw,             0644, withdraw_show,            withdraw_store);
-GDLM_ATTR(id,                   0444, lkid_show,                NULL);
 GDLM_ATTR(jid,                  0444, jid_show,                 NULL);
 GDLM_ATTR(first,                0444, lkfirst_show,             NULL);
 GDLM_ATTR(first_done,           0444, first_done_show,          NULL);
@@ -402,7 +395,6 @@ static struct attribute *lock_module_attrs[] = {
         &gdlm_attr_proto_name.attr,
         &gdlm_attr_block.attr,
         &gdlm_attr_withdraw.attr,
-        &gdlm_attr_id.attr,
         &gdlm_attr_jid.attr,
         &gdlm_attr_first.attr,
         &gdlm_attr_first_done.attr,