Author: pjd Date: Wed May 12 16:42:28 2010 New Revision: 207970 URL: http://svn.freebsd.org/changeset/base/207970
Log: When there is no memory or KVA, try to help by reclaiming some vnodes. This helps with 'kmem_map too small' panics. No objections from: kib Tested by: Alexander V. Ribchansky <[email protected]> MFC after: 1 week Modified: head/sys/kern/vfs_subr.c Modified: head/sys/kern/vfs_subr.c ============================================================================== --- head/sys/kern/vfs_subr.c Wed May 12 16:28:41 2010 (r207969) +++ head/sys/kern/vfs_subr.c Wed May 12 16:42:28 2010 (r207970) @@ -821,6 +821,19 @@ static struct kproc_desc vnlru_kp = { }; SYSINIT(vnlru, SI_SUB_KTHREAD_UPDATE, SI_ORDER_FIRST, kproc_start, &vnlru_kp); + +static void +vfs_lowmem(void *arg __unused) +{ + + /* + * On low memory condition free 1/8th of the free vnodes. + */ + mtx_lock(&vnode_free_list_mtx); + vnlru_free(freevnodes / 8); + mtx_unlock(&vnode_free_list_mtx); +} +EVENTHANDLER_DEFINE(vm_lowmem, vfs_lowmem, NULL, 0); /* * Routines having to do with the management of the vnode table. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
