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Diffstat (limited to 'net/unix/garbage.c')
-rw-r--r--net/unix/garbage.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/net/unix/garbage.c b/net/unix/garbage.c
index 280b9b07b1c0..a6929226d40d 100644
--- a/net/unix/garbage.c
+++ b/net/unix/garbage.c
@@ -543,7 +543,7 @@ static void unix_walk_scc(struct sk_buff_head *hitlist)
list_replace_init(&unix_visited_vertices, &unix_unvisited_vertices);
swap(unix_vertex_unvisited_index, unix_vertex_grouped_index);
- unix_graph_cyclic_sccs = cyclic_sccs;
+ WRITE_ONCE(unix_graph_cyclic_sccs, cyclic_sccs);
WRITE_ONCE(unix_graph_state,
cyclic_sccs ? UNIX_GRAPH_CYCLIC : UNIX_GRAPH_NOT_CYCLIC);
}
@@ -577,7 +577,7 @@ static void unix_walk_scc_fast(struct sk_buff_head *hitlist)
list_replace_init(&unix_visited_vertices, &unix_unvisited_vertices);
- unix_graph_cyclic_sccs = cyclic_sccs;
+ WRITE_ONCE(unix_graph_cyclic_sccs, cyclic_sccs);
WRITE_ONCE(unix_graph_state,
cyclic_sccs ? UNIX_GRAPH_CYCLIC : UNIX_GRAPH_NOT_CYCLIC);
}
@@ -629,19 +629,12 @@ void unix_schedule_gc(void)
queue_work(system_dfl_wq, &unix_gc_work);
}
-#define UNIX_INFLIGHT_TRIGGER_GC 16000
-#define UNIX_INFLIGHT_SANE_USER (SCM_MAX_FD * 8)
+#define UNIX_INFLIGHT_SANE_USER (SCM_MAX_FD * 8)
static void wait_for_unix_gc(struct scm_fp_list *fpl)
{
- /* If number of inflight sockets is insane,
- * force a garbage collect right now.
- *
- * Paired with the WRITE_ONCE() in unix_inflight(),
- * unix_notinflight(), and __unix_gc().
- */
- if (READ_ONCE(unix_tot_inflight) > UNIX_INFLIGHT_TRIGGER_GC)
- unix_schedule_gc();
+ if (READ_ONCE(unix_graph_state) == UNIX_GRAPH_NOT_CYCLIC)
+ return;
/* Penalise users who want to send AF_UNIX sockets
* but whose sockets have not been received yet.
@@ -649,6 +642,8 @@ static void wait_for_unix_gc(struct scm_fp_list *fpl)
if (READ_ONCE(fpl->user->unix_inflight) < UNIX_INFLIGHT_SANE_USER)
return;
- if (READ_ONCE(gc_in_progress))
+ unix_schedule_gc();
+
+ if (READ_ONCE(unix_graph_cyclic_sccs))
flush_work(&unix_gc_work);
}