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-rw-r--r--fs/drop_caches.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 9fd702f5bfb2..9280202e488c 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -59,10 +59,22 @@ int drop_caches_sysctl_handler(ctl_table *table, int write,
if (ret)
return ret;
if (write) {
- if (sysctl_drop_caches & 1)
+ static int stfu;
+
+ if (sysctl_drop_caches & 1) {
iterate_supers(drop_pagecache_sb, NULL);
- if (sysctl_drop_caches & 2)
+ count_vm_event(DROP_PAGECACHE);
+ }
+ if (sysctl_drop_caches & 2) {
drop_slab();
+ count_vm_event(DROP_SLAB);
+ }
+ if (!stfu) {
+ pr_info("%s (%d): drop_caches: %d\n",
+ current->comm, task_pid_nr(current),
+ sysctl_drop_caches);
+ }
+ stfu |= sysctl_drop_caches & 4;
}
return 0;
}