diff options
| author | dg <dg@FreeBSD.org> | 1998-06-05 21:41:48 +0000 |
|---|---|---|
| committer | dg <dg@FreeBSD.org> | 1998-06-05 21:41:48 +0000 |
| commit | 6ffbdd6b2ef5cc383625d4dfb241ed44ba5d5df3 (patch) | |
| tree | ada90fad85de1e7bd6b21e100a2543d414dc5d9f /sys/kern/uipc_mbuf.c | |
| parent | ff5abf883c9c6ce6eb1460ed1785468bbc47e9e8 (diff) | |
| download | FreeBSD-src-6ffbdd6b2ef5cc383625d4dfb241ed44ba5d5df3.zip FreeBSD-src-6ffbdd6b2ef5cc383625d4dfb241ed44ba5d5df3.tar.gz | |
If we are out of mb_map space and we failed to m_reclaim() anything and
the alloc is not M_DONTWAIT, then panic with "Out of mbuf clusters".
Callers that specify M_WAIT can't deal with getting a NULL buffer, so this
is a more graceful failure than randomly page faulting in the socket code
or elsewhere.
Diffstat (limited to 'sys/kern/uipc_mbuf.c')
| -rw-r--r-- | sys/kern/uipc_mbuf.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/sys/kern/uipc_mbuf.c b/sys/kern/uipc_mbuf.c index 567fd81..b033b1e 100644 --- a/sys/kern/uipc_mbuf.c +++ b/sys/kern/uipc_mbuf.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)uipc_mbuf.c 8.2 (Berkeley) 1/4/94 - * $Id: uipc_mbuf.c,v 1.33 1997/12/28 01:01:13 bde Exp $ + * $Id: uipc_mbuf.c,v 1.34 1998/02/20 13:37:38 bde Exp $ */ #include <sys/param.h> @@ -255,10 +255,14 @@ m_retry(i, t) #define m_retry(i, t) (struct mbuf *)0 MGET(m, i, t); #undef m_retry - if (m != NULL) + if (m != NULL) { mbstat.m_wait++; - else - mbstat.m_drops++; + } else { + if (i == M_DONTWAIT) + mbstat.m_drops++; + else + panic("Out of mbuf clusters"); + } return (m); } @@ -275,10 +279,14 @@ m_retryhdr(i, t) #define m_retryhdr(i, t) (struct mbuf *)0 MGETHDR(m, i, t); #undef m_retryhdr - if (m != NULL) + if (m != NULL) { mbstat.m_wait++; - else - mbstat.m_drops++; + } else { + if (i == M_DONTWAIT) + mbstat.m_drops++; + else + panic("Out of mbuf clusters"); + } return (m); } |
