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Merge branch 'sysctl' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc-2.6

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* 'sysctl' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc-2.6:
  SYSCTL: Add a mutex to the page_alloc zone order sysctl
  SYSCTL: Print binary sysctl warnings (nearly) only once
This commit is contained in:
Linus Torvalds
2009-12-24 13:01:29 -08:00
parent 6067d7e4f0 443c6f145d
commit 0b5e2588d8
2 changed files with 37 additions and 5 deletions
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mm/page_alloc.c
+7 -4
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@@ -2402,13 +2402,14 @@ int numa_zonelist_order_handler(ctl_table *table, int write,
{
char saved_string[NUMA_ZONELIST_ORDER_LEN];
int ret;
static DEFINE_MUTEX(zl_order_mutex);
mutex_lock(&zl_order_mutex);
if (write)
strncpy(saved_string, (char*)table->data,
NUMA_ZONELIST_ORDER_LEN);
strcpy(saved_string, (char*)table->data);
ret = proc_dostring(table, write, buffer, length, ppos);
if (ret)
return ret;
goto out;
if (write) {
int oldval = user_zonelist_order;
if (__parse_numa_zonelist_order((char*)table->data)) {
@@ -2421,7 +2422,9 @@ int numa_zonelist_order_handler(ctl_table *table, int write,
} else if (oldval != user_zonelist_order)
build_all_zonelists();
}
return 0;
out:
mutex_unlock(&zl_order_mutex);
return ret;
}