diff options
Diffstat (limited to 'sys/kern/kern_sysctl.c')
| -rw-r--r-- | sys/kern/kern_sysctl.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/kern/kern_sysctl.c b/sys/kern/kern_sysctl.c index 5d79ca2..3e9878e 100644 --- a/sys/kern/kern_sysctl.c +++ b/sys/kern/kern_sysctl.c @@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$"); #include <sys/mutex.h> #include <sys/sx.h> #include <sys/sysproto.h> +#include <sys/uio.h> #include <sys/vimage.h> #include <security/mac/mac_framework.h> @@ -1416,11 +1417,16 @@ userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, SYSCTL_LOCK(); CURVNET_SET(TD_TO_VNET(curthread)); - do { + for (;;) { req.oldidx = 0; req.newidx = 0; error = sysctl_root(0, name, namelen, &req); - } while (error == EAGAIN); + if (error != EAGAIN) + break; + DROP_GIANT(); + uio_yield(); + PICKUP_GIANT(); + } if (req.lock == REQ_WIRED && req.validlen > 0) vsunlock(req.oldptr, req.validlen); |
