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1. Statically initialize swap_pager_full and swap_pager_almost_full to the

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full state.  (When swap is added their state will change appropriately.)
2. Set swap_pager_full and swap_pager_almost_full to the full state when
   the last swap device is removed.
Combined these changes eliminate nonsense messages from the kernel on swap-
less machines.

Item 2 submitted by:	Divacky Roman <xdivac02@stud.fit.vutbr.cz>
Prodding by:		phk
This commit is contained in:
Alan Cox 2004-01-24 21:31:06 +00:00
parent e13f9ac88b
commit 7dea2c2e3b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=124933
1 changed files with 6 additions and 2 deletions
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8
sys/vm/swap_pager.c
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@ -187,8 +187,8 @@ static void swapdev_strategy(struct buf *, struct swdevt *sw);
#define SWM_FREE 0x02 /* free, period */
#define SWM_POP 0x04 /* pop out */
int swap_pager_full; /* swap space exhaustion (task killing) */
static int swap_pager_almost_full; /* swap space exhaustion (w/ hysteresis)*/
int swap_pager_full = 2; /* swap space exhaustion (task killing) */
static int swap_pager_almost_full = 1; /* swap space exhaustion (w/hysteresis)*/
static int nsw_rcount; /* free read buffers */
static int nsw_wcount_sync; /* limit write buffers / synchronous */
static int nsw_wcount_async; /* limit write buffers / asynchronous */
@ -2267,6 +2267,10 @@ swapoff(struct thread *td, struct swapoff_args *uap)
mtx_lock(&sw_dev_mtx);
TAILQ_REMOVE(&swtailq, sp, sw_list);
nswapdev--;
if (nswapdev == 0) {
swap_pager_full = 2;
swap_pager_almost_full = 1;
}
if (swdevhd == sp)
swdevhd = NULL;
mtx_unlock(&sw_dev_mtx);