Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] mm: memcontrol: only manage socket pressure for CONFIG_INET | Date | Wed, 09 Dec 2015 17:32:16 +0100 |
| |
When IPV4 support is disabled, the memcg->socket_pressure field is not defined and we get a build error from the vmpressure code:
mm/vmpressure.c: In function 'vmpressure': mm/vmpressure.c:287:9: error: 'struct mem_cgroup' has no member named 'socket_pressure' memcg->socket_pressure = jiffies + HZ; mm/built-in.o: In function `mem_cgroup_css_free': :(.text+0x1c03a): undefined reference to `tcp_destroy_cgroup' mm/built-in.o: In function `mem_cgroup_css_online': :(.text+0x1c20e): undefined reference to `tcp_init_cgroup'
This puts the code causing this in the same #ifdef that guards the struct member and the TCP implementation.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 20cc40e66c42 ("mm: memcontrol: hook up vmpressure to socket pressure")
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 6faea81e66d7..73cd572167bb 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4220,13 +4220,13 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css) if (ret) return ret; +#ifdef CONFIG_INET #ifdef CONFIG_MEMCG_LEGACY_KMEM ret = tcp_init_cgroup(memcg); if (ret) return ret; #endif -#ifdef CONFIG_INET if (cgroup_subsys_on_dfl(memory_cgrp_subsys) && !cgroup_memory_nosocket) static_branch_inc(&memcg_sockets_enabled_key); #endif @@ -4276,7 +4276,7 @@ static void mem_cgroup_css_free(struct cgroup_subsys_state *css) memcg_free_kmem(memcg); -#ifdef CONFIG_MEMCG_LEGACY_KMEM +#if defined(CONFIG_MEMCG_LEGACY_KMEM) && defined(CONFIG_INET) tcp_destroy_cgroup(memcg); #endif diff --git a/mm/vmpressure.c b/mm/vmpressure.c index 506f03e4be47..8cdeebe48848 100644 --- a/mm/vmpressure.c +++ b/mm/vmpressure.c @@ -275,6 +275,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree, level = vmpressure_calc_level(scanned, reclaimed); +#ifdef CONFIG_INET if (level > VMPRESSURE_LOW) { /* * Let the socket buffer allocator know that @@ -286,6 +287,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree, */ memcg->socket_pressure = jiffies + HZ; } +#endif } }
| |