diff options
Diffstat (limited to 'fs/drop_caches.c')
| -rw-r--r-- | fs/drop_caches.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c index c00e055b628..1de7294aad2 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -44,12 +44,13 @@ static void drop_slab(void) .gfp_mask = GFP_KERNEL, }; + nodes_setall(shrink.nodes_to_scan); do { nr_objects = shrink_slab(&shrink, 1000, 1000); } while (nr_objects > 10); } -int drop_caches_sysctl_handler(ctl_table *table, int write, +int drop_caches_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { int ret; @@ -58,10 +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; } |