struct mm_struct * swap_token_mm = &init_mm;
#define SWAP_TOKEN_CHECK_INTERVAL (HZ * 2)
-#define SWAP_TOKEN_TIMEOUT 0
+#define SWAP_TOKEN_TIMEOUT (300 * HZ)
/*
* Currently disabled; Needs further code to work at HZ * 300.
*/
/* We have the token. Let others know we still need it. */
if (has_swap_token(current->mm)) {
current->mm->recent_pagein = 1;
+ if (unlikely(!swap_token_default_timeout))
+ disable_swap_token();
return;
}
if (time_after(jiffies, swap_token_check)) {
- /* Can't get swapout protection if we exceed our RSS limit. */
- // if (current->mm->rss > current->mm->rlimit_rss)
- // return;
+ if (!swap_token_default_timeout) {
+ swap_token_check = jiffies + SWAP_TOKEN_CHECK_INTERVAL;
+ return;
+ }
/* ... or if we recently held the token. */
if (time_before(jiffies, current->mm->swap_token_time))
{
spin_lock(&swap_token_lock);
if (likely(mm == swap_token_mm)) {
+ mm->swap_token_time = jiffies + SWAP_TOKEN_CHECK_INTERVAL;
swap_token_mm = &init_mm;
swap_token_check = jiffies;
}