libceph: allow setting abort_on_full for rbd

Introduce a new option abort_on_full, default to false. Then
we can get -ENOSPC when the pool is full, or reaches quota.

[ Don't show abort_on_full in /proc/mounts. ]

Signed-off-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

6 files changed, 19 insertions, 9 deletions

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 4e9a7cc488da..da2cd8e89062 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -530,7 +530,7 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
         seq_putc(m, ',');
         pos = m->count;
 
-        ret = ceph_print_client_options(m, fsc->client);
+        ret = ceph_print_client_options(m, fsc->client, false);
         if (ret)
                 return ret;
 
@@ -640,7 +640,7 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
         opt = NULL; /* fsc->client now owns this */
 
         fsc->client->extra_mon_dispatch = extra_mon_dispatch;
-        fsc->client->osdc.abort_on_full = true;
+        ceph_set_opt(fsc->client, ABORT_ON_FULL);
 
         if (!fsopt->mds_namespace) {
                 ceph_monc_want_map(&fsc->client->monc, CEPH_SUB_MDSMAP,
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 68bb09c29ce8..a420c07904bc 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -35,6 +35,7 @@
 #define CEPH_OPT_NOMSGAUTH        (1<<4) /* don't require msg signing feat */
 #define CEPH_OPT_TCP_NODELAY      (1<<5) /* TCP_NODELAY on TCP sockets */
 #define CEPH_OPT_NOMSGSIGN        (1<<6) /* don't sign msgs */
+#define CEPH_OPT_ABORT_ON_FULL    (1<<7) /* abort w/ ENOSPC when full */
 
 #define CEPH_OPT_DEFAULT   (CEPH_OPT_TCP_NODELAY)
 
@@ -53,7 +54,7 @@ struct ceph_options {
         unsigned long osd_request_timeout;      /* jiffies */
 
         /*
-         * any type that can't be simply compared or doesn't need need
+         * any type that can't be simply compared or doesn't need
          * to be compared should go beyond this point,
          * ceph_compare_options() should be updated accordingly
          */
@@ -281,7 +282,8 @@ extern struct ceph_options *ceph_parse_options(char *options,
                               const char *dev_name, const char *dev_name_end,
                               int (*parse_extra_token)(char *c, void *private),
                               void *private);
-int ceph_print_client_options(struct seq_file *m, struct ceph_client *client);
+int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
+                              bool show_all);
 extern void ceph_destroy_options(struct ceph_options *opt);
 extern int ceph_compare_options(struct ceph_options *new_opt,
                                 struct ceph_client *client);
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 7a2af5034278..2294f963dab7 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -354,7 +354,6 @@ struct ceph_osd_client {
         struct rb_root         linger_map_checks;
         atomic_t               num_requests;
         atomic_t               num_homeless;
-        bool                   abort_on_full; /* abort w/ ENOSPC when full */
         int                    abort_err;
         struct delayed_work    timeout_work;
         struct delayed_work    osds_timeout_work;
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 87afb9ec4c68..9cab80207ced 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -255,6 +255,7 @@ enum {
         Opt_nocephx_sign_messages,
         Opt_tcp_nodelay,
         Opt_notcp_nodelay,
+        Opt_abort_on_full,
 };
 
 static match_table_t opt_tokens = {
@@ -280,6 +281,7 @@ static match_table_t opt_tokens = {
         {Opt_nocephx_sign_messages, "nocephx_sign_messages"},
         {Opt_tcp_nodelay, "tcp_nodelay"},
         {Opt_notcp_nodelay, "notcp_nodelay"},
+        {Opt_abort_on_full, "abort_on_full"},
         {-1, NULL}
 };
 
@@ -535,6 +537,10 @@ ceph_parse_options(char *options, const char *dev_name,
                         opt->flags &= ~CEPH_OPT_TCP_NODELAY;
                         break;
 
+                case Opt_abort_on_full:
+                        opt->flags |= CEPH_OPT_ABORT_ON_FULL;
+                        break;
+
                 default:
                         BUG_ON(token);
                 }
@@ -549,7 +555,8 @@ out:
 }
 EXPORT_SYMBOL(ceph_parse_options);
 
-int ceph_print_client_options(struct seq_file *m, struct ceph_client *client)
+int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
+                              bool show_all)
 {
         struct ceph_options *opt = client->options;
         size_t pos = m->count;
@@ -574,6 +581,8 @@ int ceph_print_client_options(struct seq_file *m, struct ceph_client *client)
                 seq_puts(m, "nocephx_sign_messages,");
         if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
                 seq_puts(m, "notcp_nodelay,");
+        if (show_all && (opt->flags & CEPH_OPT_ABORT_ON_FULL))
+                seq_puts(m, "abort_on_full,");
 
         if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
                 seq_printf(m, "mount_timeout=%d,",
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index 02952605d121..46f65709a6ff 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -375,7 +375,7 @@ static int client_options_show(struct seq_file *s, void *p)
         struct ceph_client *client = s->private;
         int ret;
 
-        ret = ceph_print_client_options(s, client);
+        ret = ceph_print_client_options(s, client, true);
         if (ret)
                 return ret;
 
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index d23a9f81f3d7..fa9530dd876e 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -2315,7 +2315,7 @@ again:
                    (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) ||
                     pool_full(osdc, req->r_t.base_oloc.pool))) {
                 dout("req %p full/pool_full\n", req);
-                if (osdc->abort_on_full) {
+                if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) {
                         err = -ENOSPC;
                 } else {
                         pr_warn_ratelimited("FULL or reached pool quota\n");
@@ -2545,7 +2545,7 @@ static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc)
 {
         bool victims = false;
 
-        if (osdc->abort_on_full &&
+        if (ceph_test_opt(osdc->client, ABORT_ON_FULL) &&
             (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc)))
                 for_each_request(osdc, abort_on_full_fn, &victims);
 }