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82334850ea
freebsd-skq/sys/kern
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John Baldwin 82334850ea Add an external mbuf buffer type that holds multiple unmapped pages. 
Unmapped mbufs allow sendfile to carry multiple pages of data in a
single mbuf, without mapping those pages.  It is a requirement for
Netflix's in-kernel TLS, and provides a 5-10% CPU savings on heavy web
serving workloads when used by sendfile, due to effectively
compressing socket buffers by an order of magnitude, and hence
reducing cache misses.

For this new external mbuf buffer type (EXT_PGS), the ext_buf pointer
now points to a struct mbuf_ext_pgs structure instead of a data
buffer.  This structure contains an array of physical addresses (this
reduces cache misses compared to an earlier version that stored an
array of vm_page_t pointers).  It also stores additional fields needed
for in-kernel TLS such as the TLS header and trailer data that are
currently unused.  To more easily detect these mbufs, the M_NOMAP flag
is set in m_flags in addition to M_EXT.

Various functions like m_copydata() have been updated to safely access
packet contents (using uiomove_fromphys()), to make things like BPF
safe.

NIC drivers advertise support for unmapped mbufs on transmit via a new
IFCAP_NOMAP capability.  This capability can be toggled via the new
'nomap' and '-nomap' ifconfig(8) commands.  For NIC drivers that only
transmit packet contents via DMA and use bus_dma, adding the
capability to if_capabilities and if_capenable should be all that is
required.

If a NIC does not support unmapped mbufs, they are converted to a
chain of mapped mbufs (using sf_bufs to provide the mapping) in
ip_output or ip6_output.  If an unmapped mbuf requires software
checksums, it is also converted to a chain of mapped mbufs before
computing the checksum.

Submitted by:	gallatin (earlier version)
Reviewed by:	gallatin, hselasky, rrs
Discussed with:	ae, kp (firewalls)
Relnotes:	yes
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D20616
2019-06-29 00:48:33 +00:00
..
bus_if.m Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
capabilities.conf Introduce funlinkat syscall that always us to check if we are removing 2019-04-06 09:34:26 +00:00
clock_if.m
cpufreq_if.m
device_if.m Teach makeobjops.awk to accept PROLOG and EPILOG blocks before 2017-12-31 09:23:19 +00:00
genassym.sh Don't prefix zero with 0x in assym.s. 2017-04-13 15:43:44 +00:00
genoffset.c With epoch not inlined, there is no point in using _lite KPI. While here, 2018-11-13 23:45:38 +00:00
genoffset.sh expose thread_lite definition to tied modules 2018-07-03 02:50:07 +00:00
imgact_aout.c Switch to use shared vnode locks for text files during image activation. 2019-05-05 11:20:43 +00:00
imgact_binmisc.c Add helper functions to copy strings into struct image_args. 2018-11-29 21:00:56 +00:00
imgact_elf32.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
imgact_elf64.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
imgact_elf.c Optimize kern.geom.conf* sysctls. 2019-06-18 21:05:10 +00:00
imgact_gzip.c Use C99 designated initializers for struct execsw 2018-03-13 13:09:10 +00:00
imgact_shell.c Add helper functions to copy strings into struct image_args. 2018-11-29 21:00:56 +00:00
init_main.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
init_sysent.c make sysent after r347228 2019-05-07 18:10:21 +00:00
kern_acct.c spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
kern_alq.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_clock.c Update td_runtime of running thread on each statclock(). 2019-06-14 01:09:10 +00:00
kern_clocksource.c Rename hardclock_cnt() to hardclock() and remove the old implementation. 2018-09-06 02:10:59 +00:00
kern_condvar.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_conf.c Bump SPECNAMELEN to MAXNAMLEN. 2019-01-27 00:46:06 +00:00
kern_cons.c Replace ttyprintf with sbuf_printf and tty drain routine 2018-10-20 18:31:36 +00:00
kern_context.c Remove superfluous bzero in getcontext/swapcontext/sendsig 2018-11-26 20:56:05 +00:00
kern_cpu.c kern_cpu: When adding abs frequency allow for unordered insertion 2018-07-19 11:28:14 +00:00
kern_cpuset.c Add malloc_domainset(9) and _domainset variants to other allocator KPIs. 2018-10-30 18:26:34 +00:00
kern_ctf.c kern/CTF: link_elf_ctf_get() on big endian platforms 2019-05-27 04:20:31 +00:00
kern_descrip.c fcntl: fix overflow when setting F_READAHEAD 2019-06-20 23:07:20 +00:00
kern_dtrace.c systrace: track it like sdt probes 2018-04-27 15:16:34 +00:00
kern_dump.c Print the dump progress indicator after calling dump_start(). 2018-05-01 17:32:43 +00:00
kern_environment.c Fix zapping of static hints and env in init_static_kenv(). Environments 2019-02-05 15:34:55 +00:00
kern_et.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_event.c proc: postpone proc unlock until after reporting with kqueue 2018-12-08 06:34:12 +00:00
kern_exec.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
kern_exit.c Include ktr.h in more compilation units 2019-05-21 20:38:48 +00:00
kern_fail.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_ffclock.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_fork.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
kern_hhook.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_idle.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_intr.c Disable intr_storm_threshold mechanism by default 2019-05-24 22:33:14 +00:00
kern_jail.c Replace hand-rolled unrefs if > 1 with refcount_release_if_not_last 2018-12-07 16:11:45 +00:00
kern_kcov.c kcov depends on eventhandler.h. 2019-05-20 19:14:07 +00:00
kern_khelp.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_kthread.c proc: always store parent pid in p_oppid 2018-11-16 17:07:54 +00:00
kern_ktr.c Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
kern_ktrace.c Reduce overhead of ktrace checks in the common case. 2018-05-09 00:00:47 +00:00
kern_linker.c Add flags variants to linker_files / stack(9) symbol resolution 2018-10-20 18:08:43 +00:00
kern_lock.c Add flag LK_NEW for lockinit() that is converted to LO_NEW and passed 2019-01-15 00:35:19 +00:00
kern_lockf.c lockf: annotate LOCKF_DEBUG only var 2018-05-19 05:04:38 +00:00
kern_lockstat.c lockstat: track lockstat just like sdt probes 2018-04-24 01:04:10 +00:00
kern_loginclass.c Replace hand-rolled unrefs if > 1 with refcount_release_if_not_last 2018-12-07 16:11:45 +00:00
kern_malloc.c Handle overflow in calculating max kmem size. 2019-01-14 07:31:19 +00:00
kern_mbuf.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
kern_mib.c Add missing include of sys/boot.h 2019-06-24 20:52:21 +00:00
kern_module.c Use NULL for SYSINIT's last arg, which is a pointer type 2018-05-18 17:58:09 +00:00
kern_mtxpool.c Increase MTX_POOL_SLEEP_SIZE from 128 to 1024. 2018-12-24 23:52:35 +00:00
kern_mutex.c locks: plug warnings about unitialized variables 2018-11-13 21:29:56 +00:00
kern_ntptime.c Clear pad bytes in the struct exported by kern.ntp_pll.gettime. 2018-11-20 20:32:10 +00:00
kern_osd.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_physio.c Allocate pager bufs from UMA instead of 80-ish mutex protected linked list. 2019-01-15 01:02:16 +00:00
kern_pmc.c Add malloc_domainset(9) and _domainset variants to other allocator KPIs. 2018-10-30 18:26:34 +00:00
kern_poll.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_priv.c Check for probes enabled in priv_check_cred before evaluting the error. 2018-12-19 23:28:29 +00:00
kern_proc.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
kern_procctl.c amd64 KPTI: add control from procctl(2). 2019-03-16 11:44:33 +00:00
kern_prot.c Remove wrong inline keyword. 2019-05-30 16:11:20 +00:00
kern_racct.c racct: add RACCT_ENABLED macro and racct_set_unlocked 2018-12-07 16:47:34 +00:00
kern_rangelock.c Add non-blocking trylock variants for the rangelock functions. 2019-06-27 23:10:40 +00:00
kern_rctl.c call racct_proc_ucred_changed() under the proc lock 2018-04-20 13:08:04 +00:00
kern_resource.c Fix a typo introduced in r344133 2019-03-18 12:41:42 +00:00
kern_rmlock.c Make no assertions about lock state when the scheduler is stopped. 2018-11-13 20:48:05 +00:00
kern_rwlock.c Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
kern_sdt.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_sema.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
kern_sendfile.c Trim an extra space. 2019-06-11 22:06:05 +00:00
kern_sharedpage.c Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
kern_shutdown.c EKCD: Add Chacha20 encryption mode 2019-05-23 20:12:24 +00:00
kern_sig.c Switch to check for effective user id in r349320, and disable dumping 2019-06-23 21:15:31 +00:00
kern_switch.c make critical_{enter, exit} inline 2018-07-03 01:55:09 +00:00
kern_sx.c sx: retire SX_NOADAPTIVE 2018-12-05 16:43:03 +00:00
kern_synch.c Add wakeup_any(), cheaper wakeup_one() for taskqueue(9). 2019-06-20 01:15:33 +00:00
kern_syscalls.c fix a typo resulting in a wrong variable in kern_syscall_deregister 2018-08-02 09:41:55 +00:00
kern_sysctl.c Make the warning intervals for deprecated crypto algorithms tunable. 2019-06-11 23:00:55 +00:00
kern_tc.c Instead of using an incomplete list of platforms that uses 64bits time_t 2019-01-13 00:19:15 +00:00
kern_thr.c Don't acquire evclass_lock with a spinlock held 2018-07-11 19:38:42 +00:00
kern_thread.c amd64 pmap: rework delayed invalidation, removing global mutex. 2019-05-16 13:28:48 +00:00
kern_time.c Disallow excessively small times of day in clock_settime(2). 2019-05-03 21:26:44 +00:00
kern_timeout.c Remove some, but not all, assumptions that the BSP is CPU 0 and that CPUs 2017-11-25 23:41:05 +00:00
kern_tslog.c Code for recording timestamps of events, especially function entries/exits. 2017-12-31 09:21:01 +00:00
kern_ubsan.c Teach the kernel KUBSAN runtime about alignment_assumption 2019-05-28 09:12:15 +00:00
kern_umtx.c Style. 2019-06-28 20:40:54 +00:00
kern_uuid.c Use sbuf_cat() in GEOM confxml generation. 2019-06-19 15:36:02 +00:00
kern_xxx.c Normalize COMPAT_43 syscall declarations. 2018-12-04 16:48:47 +00:00
ksched.c spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
link_elf_obj.c Remove dead check. 2019-06-03 15:23:37 +00:00
link_elf.c Fix dpcpu and vnet panics with complex types at the end of the section. 2019-06-08 17:44:42 +00:00
linker_if.m
Make.tags.inc Remove a couple of harmless stray references to nandfs. 2019-06-25 16:39:25 +00:00
Makefile Don't use an .OBJDIR for 'make sysent'. 2018-01-29 19:14:15 +00:00
makesyscalls.sh makesyscalls.sh: always use absolute path for syscalls.conf 2019-05-30 20:56:23 +00:00
md4c.c SPDX: some uses of the RSA-MD license. 2017-12-13 16:30:39 +00:00
md5c.c
msi_if.m
p1003_1b.c spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
pic_if.m
posix4_mib.c Use NULL for SYSINIT's last arg, which is a pointer type 2018-05-18 17:58:09 +00:00
sched_4bsd.c Reduce umtx-related work on exec and exit 2019-05-08 16:30:38 +00:00
sched_ule.c Reduce umtx-related work on exec and exit 2019-05-08 16:30:38 +00:00
serdev_if.m
stack_protector.c Revert r346292 (permit_nonrandom_stackcookies) 2019-05-13 23:37:44 +00:00
subr_acl_nfs4.c Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
subr_acl_posix1e.c Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
subr_autoconf.c Instrument "boot holds" for the benefit of the TSLOG framework. These 2017-12-31 09:23:52 +00:00
subr_blist.c A new parameter to blist_alloc specifies an upper bound on the size of 2019-05-11 16:15:13 +00:00
subr_boot.c When parsing command line stuff, treat tabs and spaces the same. 2019-04-18 22:52:12 +00:00
subr_bufring.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
subr_bus_dma.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
subr_bus.c Warn about deprecated features on all major OS versions. 2019-06-03 15:43:40 +00:00
subr_busdma_bufalloc.c Add malloc_domainset(9) and _domainset variants to other allocator KPIs. 2018-10-30 18:26:34 +00:00
subr_capability.c kern_sendit: use pre-initialized rights 2018-05-23 01:48:09 +00:00
subr_clock.c Kill tz_minuteswest and tz_dsttime. 2019-03-12 04:49:47 +00:00
subr_compressor.c Separate kernel crc32() implementation to its own header (gsb_crc32.h) and 2019-06-17 19:49:08 +00:00
subr_counter.c Fix pre-SI_SUB_CPU initialization of per-CPU counters. 2018-07-10 00:18:12 +00:00
subr_coverage.c Extract the coverage sanitizer KPI to a new file. 2019-01-29 11:04:17 +00:00
subr_devmap.c Raise the size of L3 table for early devmap on arm64 2018-07-19 21:58:06 +00:00
subr_devstat.c devstat(9): Constify function parameters that can be const 2018-08-23 01:42:45 +00:00
subr_disk.c Fix botched merge with 355066 2019-03-12 05:10:41 +00:00
subr_dummy_vdso_tc.c Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
subr_early.c Add a file missed in r339321 2018-10-12 00:32:45 +00:00
subr_epoch.c Implement API for draining EPOCH(9) callbacks. 2019-06-28 10:38:56 +00:00
subr_eventhandler.c Include ktr.h in more compilation units 2019-05-21 20:38:48 +00:00
subr_fattime.c Use const pointers for input data not modified by clock utility functions. 2018-02-06 22:17:01 +00:00
subr_firmware.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
subr_gtaskqueue.c Make taskqgroup_attach{,_cpu}(9) work across architectures 2019-02-12 21:23:59 +00:00
subr_hash.c Unsign some values related to allocation. 2018-01-22 02:08:10 +00:00
subr_hints.c res_find: Fix fallback logic 2018-08-18 19:45:56 +00:00
subr_inflate.c There's two files in the sys tree named inflate.c, in addition 2018-07-13 17:41:28 +00:00
subr_intr.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
subr_kdb.c Always stop the scheduler when entering kdb 2018-10-30 14:54:15 +00:00
subr_kobj.c Prevent some kobj memory allocation failures from panicking the system. 2019-01-31 22:27:39 +00:00
subr_lock.c Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
subr_log.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
subr_mchain.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
subr_module.c Have preload_delete_name() free pages backing preloaded data. 2018-07-19 20:00:28 +00:00
subr_msgbuf.c msgbuf: Light detailing (const'ify and bool'itize) 2018-08-09 17:42:27 +00:00
subr_param.c The older detection methods (smbios.bios.vendor and smbios.system.product) 2019-05-21 13:29:53 +00:00
subr_pcpu.c Ensure the DPCPU and VNET module spaces are aligned to hold a pointer. 2018-07-30 14:25:17 +00:00
subr_pctrie.c kern/subr_pctrie: Fix mismatched signedness in assertion comparison 2019-04-06 21:56:24 +00:00
subr_pidctrl.c When pidctrl_daemon() is called multiple times within an interval, it 2018-06-07 07:48:50 +00:00
subr_power.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
subr_prf.c device_printf: Use sbuf for more coherent prints on SMP 2019-05-07 17:47:20 +00:00
subr_prof.c ANSIfy sys/kern 2018-06-01 13:26:45 +00:00
subr_rangeset.c Implement rangesets. 2019-02-20 09:38:19 +00:00
subr_rman.c add support for marking interrupt handlers as suspended 2018-12-17 17:11:00 +00:00
subr_rtc.c Improve error messages from clock_if.m method failures. 2018-09-02 20:17:51 +00:00
subr_sbuf.c Fix typo in r349178. 2019-06-19 13:30:50 +00:00
subr_scanf.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
subr_sfbuf.c Remove SFBUF_OPTIONAL_DIRECT_MAP and such hacks, replacing them across the 2018-01-19 17:46:31 +00:00
subr_sglist.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
subr_sleepqueue.c Add wakeup_any(), cheaper wakeup_one() for taskqueue(9). 2019-06-20 01:15:33 +00:00
subr_smp.c x86: Implement MWAIT support for stopping a CPU 2019-05-04 20:34:26 +00:00
subr_stack.c stack(9): Drop unused API mode and comment that referenced it 2019-03-15 22:39:55 +00:00
subr_syscall.c Deinline vfork handling out of the syscall return path. 2018-12-19 20:27:26 +00:00
subr_taskqueue.c Add wakeup_any(), cheaper wakeup_one() for taskqueue(9). 2019-06-20 01:15:33 +00:00
subr_terminal.c teken, vt(4): New callbacks to lock the terminal once 2018-05-16 09:01:02 +00:00
subr_trap.c Deinline racct throttling out of syscall exit path. 2018-11-29 05:08:46 +00:00
subr_turnstile.c subr_turnstile: Extract some common code to a helper. 2019-05-16 13:17:57 +00:00
subr_uio.c simplify control flow so that gcc knows we never pass save to curthread_pflags_restore 2018-05-19 04:04:44 +00:00
subr_unit.c Implement unr64 2018-11-20 14:58:41 +00:00
subr_vmem.c Update the DIAGNOSTIC-only vmem_check_sanity() after r347949. 2019-05-18 14:19:23 +00:00
subr_witness.c Remove bpf interface lock, it is no longer exist. 2019-05-14 10:21:28 +00:00
sys_capability.c Let kern.trap_enotcap be set as a tunable. 2018-12-06 17:29:37 +00:00
sys_generic.c kern_poll: Restore explanatory comment removed in r177374 2018-11-01 23:46:23 +00:00
sys_getrandom.c Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
sys_pipe.c fcntl: fix overflow when setting F_READAHEAD 2019-06-20 23:07:20 +00:00
sys_procdesc.c proc: always store parent pid in p_oppid 2018-11-16 17:07:54 +00:00
sys_process.c Include ktr.h in more compilation units 2019-05-21 20:38:48 +00:00
sys_socket.c Ensure that the vnet is set when calling pru_sockaddr() and 2018-01-11 20:26:17 +00:00
syscalls.c make sysent after r347228 2019-05-07 18:10:21 +00:00
syscalls.master correct readlinkat(2) return type 2019-04-16 13:26:31 +00:00
systrace_args.c make sysent after r347228 2019-05-07 18:10:21 +00:00
sysv_ipc.c sysv: get rid of fork/exit hooks if the code is compiled in 2019-05-04 19:05:30 +00:00
sysv_msg.c ANSIfy sys/kern 2018-06-01 13:26:45 +00:00
sysv_sem.c Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
sysv_shm.c sysv: get rid of fork/exit hooks if the code is compiled in 2019-05-04 19:05:30 +00:00
tty_compat.c Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
tty_info.c Avoid fixing the tty_info() buffer size in tty.h. 2018-11-06 23:41:44 +00:00
tty_inq.c tty: use __unused annotation instead to silence warnings 2018-05-19 04:48:26 +00:00
tty_outq.c tty: use __unused annotation instead to silence warnings 2018-05-19 04:48:26 +00:00
tty_pts.c Move 32-bit compat support for FIODGNAME to the right place. 2018-10-26 17:59:25 +00:00
tty_tty.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
tty_ttydisc.c Replace ttyprintf with sbuf_printf and tty drain routine 2018-10-20 18:31:36 +00:00
tty.c Some devices take undesired actions when RTS and DTR are 2019-06-12 18:07:04 +00:00
uipc_accf.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
uipc_debug.c Load balance sockets with new SO_REUSEPORT_LB option. 2018-06-06 15:45:57 +00:00
uipc_domain.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
uipc_mbuf2.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
uipc_mbuf.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
uipc_mbufhash.c
uipc_mqueue.c mqueuefs: Do not allow manipulation of the pseudo-dirents "." and ".." 2019-05-21 21:26:14 +00:00
uipc_sem.c Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
uipc_shm.c Remove TODO comment after posixshmcontrol(1) added. 2019-05-30 16:04:00 +00:00
uipc_sockbuf.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
uipc_socket.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
uipc_syscalls.c Avoid leaking fp references when truncating SCM_RIGHTS control messages. 2019-02-05 17:55:08 +00:00
uipc_usrreq.c Complete LOCAL_PEERCRED support. Cache pid of the remote process in the 2019-05-30 14:24:26 +00:00
vfs_acl.c Reduce duplication in __acl_*_(file|link). 2018-02-15 21:24:43 +00:00
vfs_aio.c Allocate pager bufs from UMA instead of 80-ish mutex protected linked list. 2019-01-15 01:02:16 +00:00
vfs_bio.c Include ktr.h in more compilation units 2019-05-21 20:38:48 +00:00
vfs_cache.c Include ktr.h in more compilation units 2019-05-21 20:38:48 +00:00
vfs_cluster.c Allocate pager bufs from UMA instead of 80-ish mutex protected linked list. 2019-01-15 01:02:16 +00:00
vfs_default.c Add a VOP_BMAP(9) man page 2019-06-20 13:59:46 +00:00
vfs_export.c Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
vfs_extattr.c extattr_list_vp: Narrow locked section somewhat 2019-02-05 04:47:21 +00:00
vfs_hash.c sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
vfs_init.c Only call sigdeferstop() for NFS. 2018-10-23 21:43:41 +00:00
vfs_lookup.c NDFREE(): Fix unlocking for LOCKPARENT|LOCKLEAF and ndp->ni_dvp == ndp->ni_vp. 2019-05-21 15:12:13 +00:00
vfs_mount.c Include ktr.h in more compilation units 2019-05-21 20:38:48 +00:00
vfs_mountroot.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
vfs_subr.c Add a testing facility to manually reclaim a vnode 2019-06-06 15:04:50 +00:00
vfs_syscalls.c In the unlinkat syscall, the operation is performed on the directory 2019-04-08 14:23:52 +00:00
vfs_vnops.c FIOBMAP2: inline vn_ioc_bmap2 2019-06-27 23:39:06 +00:00
vnode_if.src Switch to use shared vnode locks for text files during image activation. 2019-05-05 11:20:43 +00:00