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Code Issues Releases Activity

Allow the VM to provide backpressure on the ARC cache as it does

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on Solaris.
This commit is contained in:
Kip Macy 2009-05-07 20:57:06 +00:00
parent 62fa227ccd
commit 77d0162c70
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=191902
1 changed files with 9 additions and 0 deletions
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9
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
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@ -131,6 +131,8 @@
#include <sys/kstat.h>
#include <sys/sdt.h>
#include <vm/vm_pageout.h>
static kmutex_t arc_reclaim_thr_lock;
static kcondvar_t arc_reclaim_thr_cv; /* used to signal reclaim thr */
static uint8_t arc_thread_exit;
@ -1809,6 +1811,13 @@ arc_reclaim_needed(void)
#ifdef _KERNEL
/*
* If pages are needed or we're within 2048 pages
* of needing to page need to reclaim
*/
if (vm_pages_needed || (vm_paging_target() > -2048))
return (1);
if (needfree)
return (1);