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31932fae1e
freebsd-nq/sys/kern
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Alexander Kabaev 31932fae1e Do not pass unmapped buffers to drivers that cannot handle them 
In physio, check if device can handle unmapped IO and pass an
appropriately mapped buffer to the driver strategy routine. The
only driver in the tree that can handle unmapped buffers is one
exposed by GEOM, so mark it as such with the new flag in the
driver cdevsw structure.

This fixes insta-panics on hosts, running dconschat, as /dev/fwmem
is an example of the driver that makes use of physio routine, but
bypasses the g_down thread, where the buffer gets mapped normally.

Discussed with: kib (earlier version)
2013-03-26 01:17:06 +00:00
..
bus_if.m Add a BUS_CHILD_DELETED() method that a bus can hook to allow it to cleanup 2012-08-21 18:13:09 +00:00
capabilities.conf Implement chflagsat(2) system call, similar to fchmodat(2), but operates on 2013-03-21 22:59:01 +00:00
clock_if.m
cpufreq_if.m
device_if.m Revert r239178 and implement two new functions, namely 2012-08-15 15:42:57 +00:00
dtio_kdtrace.c Change the module name for the I/O provider to "kernel" from 2012-09-25 19:16:28 +00:00
genassym.sh
imgact_aout.c Cosmetics: define FREEBSD32_MINUSER and AOUT32_MINUSER for struct 2012-07-22 13:41:45 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c - Fix two possible overflows when testing if ELF program headers are on 2013-03-13 22:01:31 +00:00
imgact_gzip.c Remove an old hack I noticed years ago, but never committed. 2012-06-28 07:33:43 +00:00
imgact_shell.c The execution of the shebang script requires putting interpreter path, 2011-03-06 22:59:30 +00:00
inflate.c
init_main.c print compiler version in the kernel banner 2013-02-02 11:58:35 +00:00
init_sysent.c Regenerate after r248599. 2013-03-21 23:02:19 +00:00
kern_acct.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
kern_alq.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
kern_clock.c Add a generic way to call per event allocate / release function. 2013-03-05 10:18:48 +00:00
kern_clocksource.c - Make callout(9) tickless, relying on eventtimers(4) as backend for 2013-03-04 11:09:56 +00:00
kern_condvar.c MFcalloutng: 2013-03-04 12:20:48 +00:00
kern_conf.c Reject spaces and double quotation marks in device names. devctl(4) 2012-12-22 13:33:28 +00:00
kern_cons.c cngetc: use cpu_spinwait to ease the cncheckc loop a tiny bit 2012-10-06 19:50:23 +00:00
kern_context.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_cpu.c Revert r175376 and tune cpufreq(4) frequency comparison logic instead. 2012-03-10 18:56:16 +00:00
kern_cpuset.c Post r222812 KTR_CPUMASK started being initialized only as a tunable 2012-08-30 21:22:47 +00:00
kern_ctf.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
kern_descrip.c Use dedicated malloc type for filecaps-related data, so we can detect any 2013-03-03 23:25:45 +00:00
kern_dtrace.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_environment.c Reserve room for the terminating NUL when setting or getting kernel 2012-08-14 19:16:30 +00:00
kern_et.c Fix incorrect assertion that caused panic when periodic-only timers used. 2013-03-13 06:42:01 +00:00
kern_event.c Rework overflow checks of r247898 to not let too "intelligent" compiler to 2013-03-09 09:07:13 +00:00
kern_exec.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
kern_exit.c Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
kern_fail.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_ffclock.c Revise the sysctl handling code and restructure the hierarchy of sysctls 2011-12-01 07:19:13 +00:00
kern_fork.c Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
kern_gzio.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
kern_hhook.c Staticize malloc types. 2011-04-13 11:28:46 +00:00
kern_idle.c On multi-core, multi-threaded PPC systems, it is important that the threads 2011-05-31 15:11:43 +00:00
kern_intr.c MFcalloutng (r244355): 2013-03-04 11:22:19 +00:00
kern_jail.c prison_racct_detach can be called for not fully initialized jail, so make it check that the jail has racct before doing anything 2012-12-18 18:34:36 +00:00
kern_khelp.c Use the full and proper company name for Swinburne University of Technology 2011-04-12 08:13:18 +00:00
kern_kthread.c Stop treating td_sigmask specially for the purposes of new thread 2012-05-26 20:03:47 +00:00
kern_ktr.c ktr: correctly handle possible wrap-around in the boot buffer 2013-02-08 07:29:07 +00:00
kern_ktrace.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
kern_linker.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
kern_lock.c lockmgr: unlock interlock (if requested) when dealing with upgrade/downgrade 2013-01-06 21:47:59 +00:00
kern_lockf.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_lockstat.c
kern_loginclass.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
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 Fix a typo. 2012-08-22 20:01:57 +00:00
kern_mtxpool.c
kern_mutex.c Fixup r240424: On entering KDB backends, the hijacked thread to run 2012-12-22 09:37:34 +00:00
kern_ntptime.c Limit popcorn limit to something sane (either 2ns or 2 ticks if that's 2012-08-16 02:35:44 +00:00
kern_osd.c
kern_physio.c Do not pass unmapped buffers to drivers that cannot handle them 2013-03-26 01:17:06 +00:00
kern_pmc.c Add software PMC support. 2012-03-28 20:58:30 +00:00
kern_poll.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_priv.c - Add sysctl to allow unprivileged users to call mlock(2)-family system 2012-12-18 07:36:45 +00:00
kern_proc.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
kern_prot.c Style fix 2012-11-14 10:33:12 +00:00
kern_racct.c Accessing td_state requires thread lock to be held. 2013-03-14 23:20:18 +00:00
kern_rangelock.c Add a rangelock implementation, intended to be used to range-locking 2012-05-30 16:06:38 +00:00
kern_rctl.c Add CPU percentage limit enforcement to RCTL. The resouce name is "pcpu". 2012-10-26 16:01:08 +00:00
kern_resource.c Call sched_prio() to immediately change the priority of the thread in 2013-03-07 02:53:29 +00:00
kern_rmlock.c Fixup r240424: On entering KDB backends, the hijacked thread to run 2012-12-22 09:37:34 +00:00
kern_rwlock.c Fixup r240424: On entering KDB backends, the hijacked thread to run 2012-12-22 09:37:34 +00:00
kern_sdt.c Instead of only iterating over the set of known SDT probes when sdt.ko is 2012-03-27 15:07:43 +00:00
kern_sema.c
kern_sharedpage.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
kern_shutdown.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
kern_sig.c Tweak some comments. 2013-03-18 18:04:09 +00:00
kern_switch.c Add a comment on why inlining critical_enter() may not be a good idea 2012-12-09 04:54:22 +00:00
kern_sx.c Fixup r240424: On entering KDB backends, the hijacked thread to run 2012-12-22 09:37:34 +00:00
kern_synch.c Partially revert r195702. Deferring stops is now implemented via a set of 2013-03-18 17:23:58 +00:00
kern_syscalls.c Call chainevh callback when we are invoked with neither MOD_LOAD nor 2010-10-21 20:31:50 +00:00
kern_sysctl.c - Use strdup(9) instead of reimplementing it. 2013-03-01 18:49:14 +00:00
kern_tc.c - Make callout(9) tickless, relying on eventtimers(4) as backend for 2013-03-04 11:09:56 +00:00
kern_thr.c Stop treating td_sigmask specially for the purposes of new thread 2012-05-26 20:03:47 +00:00
kern_thread.c Another NFS SIGSTOP related fix: Ignore thread suspend requests due to 2013-03-21 14:06:27 +00:00
kern_time.c Make kern_nanosleep() and pause_sbt() to use per-CPU sleep queues. 2013-03-12 06:58:49 +00:00
kern_timeout.c Cache the callout precision argument as part of the informations required 2013-03-25 09:43:50 +00:00
kern_umtx.c Fix a bug in UMTX_PROFILING: 2013-03-21 19:58:25 +00:00
kern_uuid.c Convert all users of IF_ADDR_LOCK to use new locking macros that specify 2012-01-05 19:00:36 +00:00
kern_xxx.c
ksched.c sched_rr_interval() seems always returned period in hz ticks, but same 2012-08-10 18:19:57 +00:00
link_elf_obj.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
link_elf.c Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
linker_if.m
Make.tags.inc Disconnect non-MPSAFE SMBFS from the build in preparation for dropping 2012-10-18 12:04:56 +00:00
Makefile Continue to introduce Capsicum Capability Mode support: 2011-03-01 13:28:27 +00:00
makesyscalls.sh - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate() 2011-11-21 01:26:10 +00:00
md4c.c
md5c.c
p1003_1b.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
posix4_mib.c Define two new sysctl node flags: CTLFLAG_CAPRD and CTLFLAG_CAPRW, which 2011-07-17 23:05:24 +00:00
sched_4bsd.c Add CPU percentage limit enforcement to RCTL. The resouce name is "pcpu". 2012-10-26 16:01:08 +00:00
sched_ule.c Fix bug in r242852 that prevented CPU from becoming idle if kernel built 2012-11-15 14:10:51 +00:00
serdev_if.m
stack_protector.c
subr_acl_nfs4.c Fix bug where NFSv4 ACL enforcement code wouldn't unconditionally 2012-04-17 14:54:00 +00:00
subr_acl_posix1e.c Add module load/unload stubs. 2012-03-13 20:27:48 +00:00
subr_autoconf.c Retire PCONFIG and leave the priority of thread0 alone when waiting for 2011-01-06 22:09:37 +00:00
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 Implement the concept of the unmapped VMIO buffers, i.e. buffers which 2013-03-19 14:13:12 +00:00
subr_bus.c Fix a typo. 2013-01-23 14:37:05 +00:00
subr_busdma_bufalloc.c Create an architecture-agnostic buffer pool manager that uses uma(9) to 2012-12-20 00:34:54 +00:00
subr_clock.c Improve style and wording of comments and sysctl descriptions [1]. 2011-01-09 14:34:56 +00:00
subr_devstat.c Fix build for kernels with dtrace hooks. 2012-07-11 18:50:50 +00:00
subr_disk.c
subr_dummy_vdso_tc.c Implement mechanism to export some kernel timekeeping data to 2012-06-22 07:06:40 +00:00
subr_eventhandler.c
subr_fattime.c
subr_firmware.c Correct sizeof usage 2012-06-25 05:41:16 +00:00
subr_hash.c Convert panic()s to KASSERT()s. This is an optimisation for 2012-01-23 16:31:46 +00:00
subr_hints.c Style fixes. 2012-09-04 23:16:55 +00:00
subr_kdb.c - Extend the KDB interface to add a per-debugger callback to print a 2012-04-12 17:43:59 +00:00
subr_kobj.c As it turns out, r186347 actually is insufficient to avoid the use of the 2011-11-15 20:11:03 +00:00
subr_lock.c - Implement run-time expansion of the KTR buffer via sysctl. 2012-11-15 00:51:57 +00:00
subr_log.c MFcalloutng (r244255 by mav, with minor changes): 2013-03-04 16:07:55 +00:00
subr_mbpool.c
subr_mchain.c Mechanically substitute flags from historic mbuf allocator with 2012-12-05 08:04:20 +00:00
subr_module.c Provide convenience function for obtaining MODINFO_ADDR and MODINFO_SIZE 2011-02-09 19:08:21 +00:00
subr_msgbuf.c - Clean up timestamps in msgbuf code. The timestamps should now be 2012-03-19 00:36:32 +00:00
subr_param.c Implement the concept of the unmapped VMIO buffers, i.e. buffers which 2013-03-19 14:13:12 +00:00
subr_pcpu.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
subr_power.c
subr_prf.c Fix double vision syndrome (read: double output) when in the 2011-10-16 14:16:46 +00:00
subr_prof.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_rman.c Unlock in the error path to prevent a lock leak. 2012-05-31 17:27:05 +00:00
subr_rtc.c Core structure and functions to support a feed-forward clock within the kernel. 2011-11-19 14:10:16 +00:00
subr_sbuf.c r222015 introduced a new assertion that the size of a fixed-length sbuf 2011-08-19 08:29:10 +00:00
subr_scanf.c Xen netback driver rewrite. 2012-01-26 16:35:09 +00:00
subr_sglist.c
subr_sleepqueue.c Partially revert r195702. Deferring stops is now implemented via a set of 2013-03-18 17:23:58 +00:00
subr_smp.c - Correctly handle EWOULDBLOCK in quiesce_cpus 2012-12-19 20:08:06 +00:00
subr_stack.c Constify stack argument for functions that don't modify it. 2011-11-16 19:06:55 +00:00
subr_syscall.c Fix build on ARM (and probably other platforms) 2012-12-28 06:52:53 +00:00
subr_taskqueue.c Extend taskqueue(9) to enable per-taskqueue callbacks. 2013-03-23 15:11:53 +00:00
subr_trap.c Partially revert r195702. Deferring stops is now implemented via a set of 2013-03-18 17:23:58 +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 Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
subr_unit.c Correct double "the the" 2012-09-14 21:28:56 +00:00
subr_witness.c Correct the lock class for the vm object lock. 2013-03-09 10:16:08 +00:00
sys_capability.c Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
sys_generic.c Rework overflow checks of r247898 to not let too "intelligent" compiler to 2013-03-09 09:07:13 +00:00
sys_pipe.c Remove redundant space. 2013-02-17 11:48:16 +00:00
sys_procdesc.c Add the wait6(2) system call. It takes POSIX waitid()-like process 2012-11-13 12:52:31 +00:00
sys_process.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
sys_socket.c Add the fo_chown and fo_chmod methods to struct fileops and use them 2011-08-16 20:07:47 +00:00
syscalls.c Regenerate after r248599. 2013-03-21 23:02:19 +00:00
syscalls.master Implement chflagsat(2) system call, similar to fchmodat(2), but operates on 2013-03-21 22:59:01 +00:00
systrace_args.c Regenerate after r248599. 2013-03-21 23:02:19 +00:00
sysv_ipc.c
sysv_msg.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
sysv_sem.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
sysv_shm.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
tty_compat.c
tty_info.c Fix whitespace inconsistencies in TTY code. 2012-02-06 18:15:46 +00:00
tty_inq.c Use strchr() and strrchr(). 2012-01-02 12:12:10 +00:00
tty_outq.c Fix whitespace inconsistencies in the TTY layer and its drivers owned by me. 2011-06-26 18:26:20 +00:00
tty_pts.c Allow O_CLOEXEC in posix_openpt() flags. 2013-03-21 21:39:15 +00:00
tty_tty.c Finish r210923, 210926. Mark some devices as eternal. 2011-01-04 10:59:38 +00:00
tty_ttydisc.c Correct SIGTTIN handling. 2012-10-25 09:05:21 +00:00
tty.c Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
uipc_accf.c
uipc_cow.c Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/ 2011-02-25 10:11:01 +00:00
uipc_debug.c
uipc_domain.c - Implement two new system calls: 2013-03-02 21:11:30 +00:00
uipc_mbuf2.c Mechanically substitute flags from historic mbuf allocator with 2012-12-05 08:04:20 +00:00
uipc_mbuf.c In m_align() add assertions that mbuf is virgin, similar to assertions 2013-03-17 07:41:14 +00:00
uipc_mqueue.c Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
uipc_sem.c Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
uipc_shm.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
uipc_sockbuf.c Use m_get() and m_getcl() instead of compat macros. 2013-03-15 10:21:18 +00:00
uipc_socket.c Implement SOCK_CLOEXEC, SOCK_NONBLOCK and MSG_CMSG_CLOEXEC. 2013-03-19 20:58:17 +00:00
uipc_syscalls.c Implement SOCK_CLOEXEC, SOCK_NONBLOCK and MSG_CMSG_CLOEXEC. 2013-03-19 20:58:17 +00:00
uipc_usrreq.c Implement SOCK_CLOEXEC, SOCK_NONBLOCK and MSG_CMSG_CLOEXEC. 2013-03-19 20:58:17 +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 Do not remap usermode pages into KVA for physio. 2013-03-19 14:43:57 +00:00
vfs_bio.c Only size and create the bio_transient_map when unmapped buffers are 2013-03-21 07:28:15 +00:00
vfs_cache.c When renaming a directory from one parent directory to another, 2013-03-20 17:57:00 +00:00
vfs_cluster.c Implement the concept of the unmapped VMIO buffers, i.e. buffers which 2013-03-19 14:13:12 +00:00
vfs_default.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
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 Remove the support for using non-mpsafe filesystem modules. 2012-10-22 17:50:54 +00:00
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 Merge Capsicum overhaul: 2013-03-02 00:53:12 +00:00
vfs_mount.c When the journaled FFS volume is suspended due to the journal space 2013-03-20 21:07:49 +00:00
vfs_mountroot.c post mountroot event after a real/final root is mounted 2013-03-23 08:59:34 +00:00
vfs_subr.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
vfs_syscalls.c - Constify local path variable for chflagsat(). 2013-03-22 07:40:34 +00:00
vfs_vnops.c Separate the copyright lines and the informational block by a blank line. 2013-03-15 14:01:37 +00:00
vnode_if.src remove vop_lookup_pre and vop_lookup_post 2012-11-22 10:36:10 +00:00