1 files changed, 58 insertions, 8 deletions

diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 54fd98425991..ccacffd2faaa 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -25,6 +25,7 @@
 #include "quota.h"
 #include "util.h"
 #include "glops.h"
+#include "recovery.h"
 
 struct gfs2_attr {
         struct attribute attr;
@@ -232,6 +233,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len
         glops = gfs2_glops_list[gltype];
         if (glops == NULL)
                 return -EINVAL;
+        if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))
+                fs_info(sdp, "demote interface used\n");
         rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl);
         if (rv)
                 return rv;
@@ -323,6 +326,30 @@ static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
         return sprintf(buf, "%d\n", ls->ls_first);
 }
 
+static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
+{
+        unsigned first;
+        int rv;
+
+        rv = sscanf(buf, "%u", &first);
+        if (rv != 1 || first > 1)
+                return -EINVAL;
+        spin_lock(&sdp->sd_jindex_spin);
+        rv = -EBUSY;
+        if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
+                goto out;
+        rv = -EINVAL;
+        if (sdp->sd_args.ar_spectator)
+                goto out;
+        if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
+                goto out;
+        sdp->sd_lockstruct.ls_first = first;
+        rv = 0;
+out:
+        spin_unlock(&sdp->sd_jindex_spin);
+        return rv ? rv : len;
+}
+
 static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf)
 {
         struct lm_lockstruct *ls = &sdp->sd_lockstruct;
@@ -350,7 +377,7 @@ static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
         list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
                 if (jd->jd_jid != jid)
                         continue;
-                rv = slow_work_enqueue(&jd->jd_work);
+                rv = gfs2_recover_journal(jd, false);
                 break;
         }
 out:
@@ -375,14 +402,41 @@ static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf)
         return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid);
 }
 
+static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
+{
+        unsigned jid;
+        int rv;
+
+        rv = sscanf(buf, "%u", &jid);
+        if (rv != 1)
+                return -EINVAL;
+
+        spin_lock(&sdp->sd_jindex_spin);
+        rv = -EINVAL;
+        if (sdp->sd_args.ar_spectator)
+                goto out;
+        if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
+                goto out;
+        rv = -EBUSY;
+        if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
+                goto out;
+        sdp->sd_lockstruct.ls_jid = jid;
+        smp_mb__after_clear_bit();
+        wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);
+        rv = 0;
+out:
+        spin_unlock(&sdp->sd_jindex_spin);
+        return rv ? rv : len;
+}
+
 #define GDLM_ATTR(_name,_mode,_show,_store) \
 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(jid,                  0444, jid_show,                 NULL);
-GDLM_ATTR(first,                0444, lkfirst_show,             NULL);
+GDLM_ATTR(jid,                  0644, jid_show,                 jid_store);
+GDLM_ATTR(first,                0644, lkfirst_show,             lkfirst_store);
 GDLM_ATTR(first_done,           0444, first_done_show,          NULL);
 GDLM_ATTR(recover,              0600, NULL,                     recover_store);
 GDLM_ATTR(recover_done,         0444, recover_done_show,        NULL);
@@ -468,8 +522,6 @@ static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
 }                                                                             \
 TUNE_ATTR_2(name, name##_store)
 
-TUNE_ATTR(incore_log_blocks, 0);
-TUNE_ATTR(log_flush_secs, 0);
 TUNE_ATTR(quota_warn_period, 0);
 TUNE_ATTR(quota_quantum, 0);
 TUNE_ATTR(max_readahead, 0);
@@ -481,8 +533,6 @@ TUNE_ATTR(statfs_quantum, 1);
 TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
 
 static struct attribute *tune_attrs[] = {
-        &tune_attr_incore_log_blocks.attr,
-        &tune_attr_log_flush_secs.attr,
         &tune_attr_quota_warn_period.attr,
         &tune_attr_quota_quantum.attr,
         &tune_attr_max_readahead.attr,
@@ -566,7 +616,7 @@ static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
 
         add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
         add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
-        if (!sdp->sd_args.ar_spectator)
+        if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))
                 add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid);
         if (gfs2_uuid_valid(uuid))
                 add_uevent_var(env, "UUID=%pUB", uuid);