diff options
| author | Tim Chen <tim.c.chen@linux.intel.com> | 2017-05-03 14:54:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-03 15:52:10 -0700 |
| commit | 9b7a814327a314c56c0e68654c76d99bd2938084 (patch) | |
| tree | bb960ea71be69691b4ff1280fea4d4e93e3e9174 /mm/swap_slots.c | |
| parent | 9927e3887642b976d9b391cd77d71388aa521e54 (diff) | |
| download | lwn-9b7a814327a314c56c0e68654c76d99bd2938084.tar.gz lwn-9b7a814327a314c56c0e68654c76d99bd2938084.zip | |
mm/swap_slots.c: add warning if swap slots cache failed to initialize
Add a warning diagnostics to user if we failed to allocate swap slots
cache and use it.
[akpm@linux-foundation.org: use WARN_ONCE return value, fix grammar in message]
Link: http://lkml.kernel.org/r/20170328234827.GA10107@linux.intel.com
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap_slots.c')
| -rw-r--r-- | mm/swap_slots.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/swap_slots.c b/mm/swap_slots.c index b1ccb58ad397..aa1c415f4abd 100644 --- a/mm/swap_slots.c +++ b/mm/swap_slots.c @@ -241,8 +241,10 @@ int enable_swap_slots_cache(void) ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "swap_slots_cache", alloc_swap_slot_cache, free_slot_cache); - if (ret < 0) + if (WARN_ONCE(ret < 0, "Cache allocation failed (%s), operating " + "without swap slots cache.\n", __func__)) goto out_unlock; + swap_slot_cache_initialized = true; __reenable_swap_slots_cache(); out_unlock: |