diff options
Diffstat (limited to 'mm/compaction.c')
| -rw-r--r-- | mm/compaction.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index c8bcdea15f5f..5584fa5fa3d4 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1736,6 +1736,7 @@ static int sysctl_compact_unevictable_allowed __read_mostly = CONFIG_COMPACT_UNE */ static unsigned int __read_mostly sysctl_compaction_proactiveness = 20; static int sysctl_extfrag_threshold = 500; +static int __read_mostly sysctl_compact_memory; static inline void update_fast_start_pfn(struct compact_control *cc, unsigned long pfn) @@ -2780,6 +2781,15 @@ static int compaction_proactiveness_sysctl_handler(struct ctl_table *table, int static int sysctl_compaction_handler(struct ctl_table *table, int write, void *buffer, size_t *length, loff_t *ppos) { + int ret; + + ret = proc_dointvec(table, write, buffer, length, ppos); + if (ret) + return ret; + + if (sysctl_compact_memory != 1) + return -EINVAL; + if (write) compact_nodes(); @@ -3095,7 +3105,7 @@ static int proc_dointvec_minmax_warn_RT_change(struct ctl_table *table, static struct ctl_table vm_compaction[] = { { .procname = "compact_memory", - .data = NULL, + .data = &sysctl_compact_memory, .maxlen = sizeof(int), .mode = 0200, .proc_handler = sysctl_compaction_handler, |