Date: Thu, 26 Apr 2012 15:50:14 GMT From: Radim Kolar <hsn@filez.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/166780: patch for 10.X Message-ID: <201204261550.q3QFoETD031164@freefall.freebsd.org>
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The following reply was made to PR kern/166780; it has been noted by GNATS.
From: Radim Kolar <hsn@filez.com>
To: bug-followup@FreeBSD.org
Cc:
Subject: Re: kern/166780: patch for 10.X
Date: Thu, 26 Apr 2012 17:46:17 +0200
Index: sys/vm/swap_pager.c
===================================================================
--- sys/vm/swap_pager.c (revision 234696)
+++ sys/vm/swap_pager.c (working copy)
@@ -2692,3 +2692,20 @@
NODEV);
return (0);
}
+
+
+static int
+sysctl_vm_swap_free(SYSCTL_HANDLER_ARGS) {
+ int64_t swap_free = 0;
+ struct swdevt *sp;
+
+ mtx_lock(&sw_dev_mtx);
+ TAILQ_FOREACH(sp, &swtailq, sw_list) {
+ swap_free += sp->sw_nblks - sp->sw_used;
+ }
+ mtx_unlock(&sw_dev_mtx);
+ swap_free *= PAGE_SIZE;
+ return SYSCTL_OUT(req, &swap_free, sizeof(swap_free));
+}
+SYSCTL_OID(_vm, OID_AUTO, swap_free, CTLTYPE_S64|CTLFLAG_RD|CTLFLAG_MPSAFE,
+ NULL, 0, sysctl_vm_swap_free, "Q", "Amount of free swap
storage.");
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