John Baldwin 593efaf9f7 Further refine the handling of stop signals in the NFS client. The ... changes in r246417 were incomplete as they did not add explicit calls to sigdeferstop() around all the places that previously passed SBDRY to _sleep(). In addition, nfs_getcacheblk() could trigger a write RPC from getblk() resulting in sigdeferstop() recursing. Rather than manually deferring stop signals in specific places, change the VFS_*() and VOP_*() methods to defer stop signals for filesystems which request this behavior via a new VFCF_SBDRY flag. Note that this has to be a VFC flag rather than a MNTK flag so that it works properly with VFS_MOUNT() when the mount is not yet fully constructed. For now, only the NFS clients are set this new flag in VFS_SET(). A few other related changes: - Add an assertion to ensure that TDF_SBDRY doesn't leak to userland. - When a lookup request uses VOP_READLINK() to follow a symlink, mark the request as being on behalf of the thread performing the lookup (cnp_thread) rather than using a NULL thread pointer. This causes NFS to properly handle signals during this VOP on an interruptible mount. PR: kern/176179 Reported by: Russell Cattelan (sigdeferstop() recursion) Reviewed by: kib MFC after: 1 month		2013-02-21 19:02:50 +00:00
..
bus_if.m
capabilities.conf
clock_if.m
cpufreq_if.m
device_if.m
dtio_kdtrace.c
genassym.sh
imgact_aout.c
imgact_elf32.c
imgact_elf64.c
imgact_elf.c	Remove the ia64-specific code fragment, which effect is more cleanly	2013-02-10 20:08:33 +00:00
imgact_gzip.c
imgact_shell.c
inflate.c
init_main.c	print compiler version in the kernel banner	2013-02-02 11:58:35 +00:00
init_sysent.c
kern_acct.c
kern_alq.c
kern_clock.c	Mark 'ticks', 'time_second', and 'time_uptime' as volatile to prevent the	2013-01-28 19:38:13 +00:00
kern_clocksource.c	Get time of next event from other cores only if SMP is already started.	2013-02-01 11:39:03 +00:00
kern_condvar.c
kern_conf.c
kern_cons.c
kern_context.c
kern_cpu.c
kern_cpuset.c
kern_ctf.c
kern_descrip.c	Don't treat pointers as booleans.	2013-02-17 11:47:30 +00:00
kern_dtrace.c
kern_environment.c
kern_et.c
kern_event.c
kern_exec.c	When vforked child is traced, the debugging events are not generated	2013-02-07 15:34:22 +00:00
kern_exit.c	When vforked child is traced, the debugging events are not generated	2013-02-07 15:34:22 +00:00
kern_fail.c
kern_ffclock.c
kern_fork.c	Remove redundant parenthesis.	2013-02-17 11:47:01 +00:00
kern_gzio.c
kern_hhook.c
kern_idle.c
kern_intr.c	If an interrupt event's assign_cpu method fails, then restore the original	2013-02-07 06:48:47 +00:00
kern_jail.c
kern_khelp.c
kern_kthread.c
kern_ktr.c	ktr: correctly handle possible wrap-around in the boot buffer	2013-02-08 07:29:07 +00:00
kern_ktrace.c
kern_linker.c
kern_lock.c	lockmgr: unlock interlock (if requested) when dealing with upgrade/downgrade	2013-01-06 21:47:59 +00:00
kern_lockf.c
kern_lockstat.c
kern_loginclass.c
kern_malloc.c	Try to improve r242655 take III: move these SYSCTLs describing the kernel	2013-02-04 09:35:48 +00:00
kern_mbuf.c	Move the mbuf memory limit calculations from init_param2() to	2013-01-17 21:28:31 +00:00
kern_mib.c	fix some fat-fingering in r246246	2013-02-02 14:19:50 +00:00
kern_module.c
kern_mtxpool.c
kern_mutex.c
kern_ntptime.c
kern_osd.c
kern_physio.c
kern_pmc.c
kern_poll.c
kern_priv.c
kern_proc.c
kern_prot.c
kern_racct.c
kern_rangelock.c
kern_rctl.c
kern_resource.c
kern_rmlock.c
kern_rwlock.c
kern_sdt.c
kern_sema.c
kern_sharedpage.c
kern_shutdown.c
kern_sig.c	Further refine the handling of stop signals in the NFS client. The	2013-02-21 19:02:50 +00:00
kern_switch.c
kern_sx.c
kern_synch.c
kern_syscalls.c
kern_sysctl.c	Update comments to reflect r246689.	2013-02-11 23:05:10 +00:00
kern_tc.c	Add PPS_CANWAIT support for time_pps_fetch(). This adds support for all three	2013-02-15 18:30:32 +00:00
kern_thr.c
kern_thread.c	Fix a few typos.	2013-02-19 16:35:27 +00:00
kern_time.c
kern_timeout.c
kern_umtx.c
kern_uuid.c
kern_xxx.c
ksched.c
link_elf_obj.c
link_elf.c
linker_if.m
Make.tags.inc
Makefile
makesyscalls.sh
md4c.c
md5c.c
p1003_1b.c
posix4_mib.c
sched_4bsd.c
sched_ule.c
serdev_if.m
stack_protector.c
subr_acl_nfs4.c
subr_acl_posix1e.c
subr_autoconf.c
subr_blist.c	Remove reference to the rlist code from comments, and fix a typo visible	2013-02-05 20:08:33 +00:00
subr_bufring.c
subr_bus_dma.c	Reform the busdma API so that new types may be added without modifying	2013-02-12 16:57:20 +00:00
subr_bus.c	Fix a typo.	2013-01-23 14:37:05 +00:00
subr_busdma_bufalloc.c
subr_clock.c
subr_devstat.c
subr_disk.c
subr_dummy_vdso_tc.c
subr_eventhandler.c
subr_fattime.c
subr_firmware.c
subr_hash.c
subr_hints.c
subr_kdb.c
subr_kobj.c
subr_lock.c
subr_log.c
subr_mbpool.c
subr_mchain.c
subr_module.c
subr_msgbuf.c
subr_param.c	Move the mbuf memory limit calculations from init_param2() to	2013-01-17 21:28:31 +00:00
subr_pcpu.c
subr_power.c
subr_prf.c
subr_prof.c
subr_rman.c
subr_rtc.c
subr_sbuf.c
subr_scanf.c
subr_sglist.c
subr_sleepqueue.c	Rework the handling of stop signals in the NFS client. The changes in	2013-02-06 17:06:51 +00:00
subr_smp.c
subr_stack.c
subr_syscall.c
subr_taskqueue.c
subr_trap.c	Further refine the handling of stop signals in the NFS client. The	2013-02-21 19:02:50 +00:00
subr_turnstile.c	Update the comment: we do show the backtrace of misbehaving thread.	2013-02-17 21:37:32 +00:00
subr_uio.c	Reform the busdma API so that new types may be added without modifying	2013-02-12 16:57:20 +00:00
subr_unit.c
subr_witness.c
sys_capability.c	Remove redundant parenthesis.	2013-02-17 11:49:21 +00:00
sys_generic.c
sys_pipe.c	Remove redundant space.	2013-02-17 11:48:16 +00:00
sys_procdesc.c
sys_process.c	When vforked child is traced, the debugging events are not generated	2013-02-07 15:34:22 +00:00
sys_socket.c
syscalls.c
syscalls.master
systrace_args.c
sysv_ipc.c
sysv_msg.c
sysv_sem.c
sysv_shm.c
tty_compat.c
tty_info.c
tty_inq.c
tty_outq.c
tty_pts.c
tty_tty.c
tty_ttydisc.c
tty.c
uipc_accf.c
uipc_cow.c
uipc_debug.c
uipc_domain.c
uipc_mbuf2.c
uipc_mbuf.c	- Move large functions m_getjcl() and m_get2() to kern/uipc_mbuf.c	2013-01-24 09:29:41 +00:00
uipc_mqueue.c
uipc_sem.c
uipc_shm.c
uipc_sockbuf.c
uipc_socket.c
uipc_syscalls.c	Audit sockaddr argument for bind(2), connect(2), accept(2), sendto(2) and	2013-02-07 00:36:00 +00:00
uipc_usrreq.c	Add support of passing SCM_BINTIME ancillary data object for PF_LOCAL	2013-02-15 13:00:20 +00:00
vfs_acl.c	Prezero the acl structure which is to be copied to usermode, to avoid	2013-02-06 15:18:46 +00:00
vfs_aio.c
vfs_bio.c	Add barrier write capability to the VFS buffer interface. A barrier	2013-02-16 14:51:30 +00:00
vfs_cache.c
vfs_cluster.c	Add barrier write capability to the VFS buffer interface. A barrier	2013-02-16 14:51:30 +00:00
vfs_default.c
vfs_export.c	Further refine the handling of stop signals in the NFS client. The	2013-02-21 19:02:50 +00:00
vfs_extattr.c
vfs_hash.c	Add exported vfs_hash_index() function, which calculates the canonical	2013-01-14 05:41:40 +00:00
vfs_init.c	Don't worry if a module is already loaded when looking for a fstype to mount	2013-02-21 02:41:37 +00:00
vfs_lookup.c	Further refine the handling of stop signals in the NFS client. The	2013-02-21 19:02:50 +00:00
vfs_mount.c
vfs_mountroot.c
vfs_subr.c	Add a trivial comment to record the proper commit log for r245407:	2013-01-14 05:52:23 +00:00
vfs_syscalls.c	Style.	2013-02-17 11:56:36 +00:00
vfs_vnops.c	vn_io_faults_cnt:	2013-02-15 14:22:05 +00:00
vnode_if.src