d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
98fa035135
freebsd-dev/sys/kern
History
Konstantin Belousov a677b31425 The vm_pageout_flush() functions sbusies pages in the passed pages 
run.  After that, the pager put method is called, usually translated
to VOP_WRITE().  For the filesystems which use buffer cache,
bufwrite() sbusies the buffer pages again, waiting for the xbusy state
to drain.  The later is done in vfs_drain_busy_pages(), which is
called with the buffer pages already sbusied (by vm_pageout_flush()).

Since vfs_drain_busy_pages() can only wait for one page at the time,
and during the wait, the object lock is dropped, previous pages in the
buffer must be protected from other threads busying them.  Up to the
moment, it was done by xbusying the pages, that is incompatible with
the sbusy state in the new implementation of busy.  Switch to sbusy.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
2013-09-05 12:56:08 +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 Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +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 Revert r253939: 2013-08-05 08:55:35 +00:00
imgact_gzip.c Replace kernel virtual address space allocation with vmem. This provides 2013-08-07 06:21:20 +00:00
imgact_shell.c
inflate.c
init_main.c Don't call sleepinit() from proc0_init(), make it a SYSINIT instead. 2013-08-09 23:13:52 +00:00
init_sysent.c Regenerate after r255219. 2013-09-05 00:11:59 +00:00
kern_acct.c acct: create a special plimit object and set it for exiting processes 2013-06-30 19:08:06 +00:00
kern_alq.c The fix committed in r250951 replaced the reported panic with a deadlock... gold 2013-06-17 09:49:07 +00:00
kern_clock.c Correct a bug that prevented deadlkres from (almost) ever firing. 2013-06-28 15:55:30 +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 Several improvements to rmlock(9). Many of these are based on patches 2013-06-25 18:44:15 +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 Handle cases where capability rights are not provided. 2013-09-05 11:58:12 +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 r249408 and r249436 cause a NULL pointer dereference on the CUBIEBOARD 2013-04-16 22:09:08 +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 Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
kern_exec.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
kern_exit.c Specify SDT probe argument types in the probe definition itself rather than 2013-08-15 04:08:55 +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 Specify SDT probe argument types in the probe definition itself rather than 2013-08-15 04:08:55 +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 Move hhook's per-vnet initialisation to an earlier SYSINIT SI_SUB stage to 2013-06-15 10:08:34 +00:00
kern_idle.c
kern_intr.c The change in r236456 (atomic_store_rel not locked) exposed a bug 2013-07-04 05:53:05 +00:00
kern_jail.c Allow tmpfs be mounted inside jail. 2013-08-23 22:52:20 +00:00
kern_khelp.c Cleanup and simplification in khelp_{register|deregister}_helper(). No 2013-06-15 06:45:17 +00:00
kern_kthread.c Do not use potentially stale thread in kthread_add() 2013-08-17 17:02:43 +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 Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
kern_linker.c Rename the kld_unload event handler to kld_unload_try, and add a new 2013-08-24 21:13:38 +00:00
kern_lock.c A few mostly cosmetic nits to aid in debugging: 2013-06-25 20:23:08 +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 - Disable quantum caches on the kmem_arena. This can make fragmentation 2013-08-13 22:41:24 +00:00
kern_mbuf.c After r254779 "error" must always be present in mb_ctor_pack(), 2013-08-24 21:25:53 +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 Give mutex(9) the ability to recurse on a per-instance basis. 2013-08-09 11:24:29 +00:00
kern_ntptime.c rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST 2013-07-24 09:45:31 +00:00
kern_osd.c
kern_physio.c Fix some issues in change 254760 pointed out by Bruce Evans: 2013-08-29 16:41:40 +00:00
kern_pmc.c Add software PMC support. 2012-03-28 20:58:30 +00:00
kern_poll.c Remove unsigned comparison < 0 2013-08-07 07:22:56 +00:00
kern_priv.c Make the comments a little more clear about PRIV_KMEM_*, explicitly 2013-07-06 00:10:52 +00:00
kern_proc.c Add the ability to display the default FIB number for a process to the 2013-08-26 23:48:21 +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 Change the queue of locks in kern_rangelock.c from holding lock requests in 2013-08-15 20:19:17 +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 Fix build with INVARIANT_SUPPORT enabled but not INVARIANTS. 2013-07-08 21:17:20 +00:00
kern_rwlock.c A few mostly cosmetic nits to aid in debugging: 2013-06-25 20:23:08 +00:00
kern_sdt.c FreeBSD's DTrace implementation has a few problems with respect to handling 2013-08-13 03:10:39 +00:00
kern_sema.c
kern_sharedpage.c Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9). 2013-08-22 07:39:53 +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 Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +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 A few mostly cosmetic nits to aid in debugging: 2013-06-25 20:23:08 +00:00
kern_synch.c Simplify pause_sbt() logic. Don't call DELAY() if remainder is less 2013-08-30 10:39:56 +00:00
kern_syscalls.c
kern_sysctl.c Add a helpful message that can help point to why a sysctl tree removal failed 2013-08-09 01:04:44 +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 Implement compat32 wrappers for the ktimer_* syscalls. 2013-07-21 19:43:52 +00:00
kern_timeout.c Specify SDT probe argument types in the probe definition itself rather than 2013-08-15 04:08:55 +00:00
kern_umtx.c Fix two issues with the spin loops in the umtx(2) implementation. 2013-06-13 09:33:22 +00:00
kern_uuid.c Further restrict the MAC addresses that we use for UUID generation 2013-07-24 18:13:43 +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 some code that has been commented out since it was added in 2000. 2013-08-24 21:00:39 +00:00
linker_if.m
Make.tags.inc - Trim an unused and bogus Makefile for mount_smbfs. 2013-06-28 21:00:08 +00:00
Makefile
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
sched_4bsd.c rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST 2013-07-24 09:45:31 +00:00
sched_ule.c Point args[0] not at the thread that is ending but at the one that 2013-04-15 17:21:02 +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
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 Move an assertion to the right spot; only bus_dmamap_load_mbuf(9) 2013-06-01 11:42:47 +00:00
subr_bus.c Allow drivers to return BUS_PROBE_NOWILDCARD from their attach routine to 2013-08-08 19:30:49 +00:00
subr_busdma_bufalloc.c Replace kernel virtual address space allocation with vmem. This provides 2013-08-07 06:21:20 +00:00
subr_capability.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
subr_clock.c
subr_counter.c Revert r249590 and in case if mp_ncpus isn't initialized use MAXCPU. This 2013-07-23 11:16:40 +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 Several improvements to rmlock(9). Many of these are based on patches 2013-06-25 18:44:15 +00:00
subr_log.c MFcalloutng (r244255 by mav, with minor changes): 2013-03-04 16:07:55 +00:00
subr_mbpool.c Give (*ext_free) an int return value allowing for very sophisticated 2013-08-25 10:57:09 +00:00
subr_mchain.c Mechanically substitute flags from historic mbuf allocator with 2012-12-05 08:04:20 +00:00
subr_module.c
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_pctrie.c - Add a new general purpose path-compressed radix trie which can be used 2013-05-12 04:05:01 +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 A library function shall not set errno to 0. 2013-05-16 18:13:10 +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 MFprojects/camlock r254460: 2013-08-24 14:41:49 +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 On all the architectures, avoid to preallocate the physical memory 2013-08-09 11:28:55 +00:00
subr_unit.c Move the definition of the struct unrhdr into a separate header file, 2013-08-30 07:37:45 +00:00
subr_vmem.c Added sysctl to turn off calls to vmem_check(). 2013-08-20 11:06:56 +00:00
subr_witness.c Trim a couple of panic messages. 2013-09-04 11:52:28 +00:00
sys_capability.c This looks like a typo that breaks the build. Yell at me if this isn't the 2013-09-05 03:36:57 +00:00
sys_generic.c Restore builds on architectures that don't support CAPABILITIES (mips). 2013-09-05 03:46:44 +00:00
sys_pipe.c Make sendfile() a method in the struct fileops. Currently only 2013-08-15 07:54:31 +00:00
sys_procdesc.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
sys_process.c Revert r253939: 2013-08-05 08:55:35 +00:00
sys_socket.c Make sendfile() a method in the struct fileops. Currently only 2013-08-15 07:54:31 +00:00
syscalls.c Regenerate after r255219. 2013-09-05 00:11:59 +00:00
syscalls.master Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
systrace_args.c Regenerate after r255219. 2013-09-05 00:11:59 +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 Be more aggressive in using superpages in all mappings of objects: 2013-07-19 19:06:15 +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
tty_pts.c Make sendfile() a method in the struct fileops. Currently only 2013-08-15 07:54:31 +00:00
tty_tty.c
tty_ttydisc.c Correct SIGTTIN handling. 2012-10-25 09:05:21 +00:00
tty.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
uipc_accf.c
uipc_cow.c Give (*ext_free) an int return value allowing for very sophisticated 2013-08-25 10:57:09 +00:00
uipc_debug.c Fix socket buffer timeouts precision using the new sbintime_t KPI instead 2013-09-01 23:34:53 +00:00
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 Pad m_hdr on 32bit architectures to to prevent alignment and padding 2013-08-27 20:52:02 +00:00
uipc_mqueue.c Fix !CAPABILITIES build. 2013-09-05 10:24:09 +00:00
uipc_sem.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
uipc_shm.c Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9). 2013-08-22 07:39:53 +00:00
uipc_sockbuf.c Fix socket buffer timeouts precision using the new sbintime_t KPI instead 2013-09-01 23:34:53 +00:00
uipc_socket.c Fix socket buffer timeouts precision using the new sbintime_t KPI instead 2013-09-01 23:34:53 +00:00
uipc_syscalls.c Style fixes. Most fixes are about not treating integers and pointers as 2013-09-05 00:17:38 +00:00
uipc_usrreq.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
vfs_acl.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
vfs_aio.c The fget() function now takes pointer to cap_rights_t, so change 0 to NULL. 2013-09-05 11:59:23 +00:00
vfs_bio.c The vm_pageout_flush() functions sbusies pages in the passed pages 2013-09-05 12:56:08 +00:00
vfs_cache.c namecache sdt: freebsd doesn't support structured characters yet 2013-07-09 08:58:34 +00:00
vfs_cluster.c When allocating a pbuf for the cluster write, do not sleep waiting 2013-08-27 01:31:12 +00:00
vfs_default.c - Convert the bufobj lock to rwlock. 2013-05-31 00:43:41 +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 Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +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 Revert accidental commit. 2013-06-29 05:05:57 +00:00
vfs_lookup.c Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
vfs_mount.c Forced dismounts of NFS mounts can fail when thread(s) are stuck 2013-09-01 23:02:59 +00:00
vfs_mountroot.c Add a tunable for the default timeout. 2013-08-03 04:25:25 +00:00
vfs_subr.c In r114945 the line 'nmp = TAILQ_NEXT(mp, mnt_list);' was duplicated. 2013-08-17 14:13:45 +00:00
vfs_syscalls.c Correct the logic broken in my last commit. 2013-09-05 09:36:19 +00:00
vfs_vnops.c Make the seek a method of the struct fileops. 2013-08-21 17:36:01 +00:00
vnode_if.src remove vop_lookup_pre and vop_lookup_post 2012-11-22 10:36:10 +00:00