Konstantin Belousov b2c3df842b Handle errors from background write of the cylinder group blocks. ...

First, on the write error, bufdone() call from ffs_backgroundwrite()
panics because pbrelvp() cleared bp->b_bufobj, while brelse() would
try to re-dirty the copy of the cg buffer.  Handle this by setting
B_INVAL for the case of BIO_ERROR.

Second, we must re-dirty the real buffer containing the cylinder group
block data when background write failed.  Real cg buffer was already
marked clean in ffs_bufwrite(). After the BV_BKGRDINPROG flag is
cleared on the real cg buffer in ffs_backgroundwrite(), buffer scan
may reuse the buffer at any moment. The result is lost write, and if
the write error was only transient, we get corrupted bitmaps.

We cannot re-dirty the original cg buffer in the
ffs_backgroundwritedone(), since the context is not sleepable,
preventing us from sleeping for origbp' lock.  Add BV_BKGDERR flag
(protected by the buffer object lock), which is converted into delayed
write by brelse(), bqrelse() and buffer scan.

In collaboration with:	Conrad Meyer <cse.cem@gmail.com>
Reviewed by:	mckusick
Sponsored by:	The FreeBSD Foundation (kib),
	  EMC/Isilon storage division (Conrad)
MFC after:	2 weeks

2015-06-27 09:44:14 +00:00

..

bus_if.m

Add a bus method to fetch the VM domain for the given device/bus.

2014-10-09 05:33:25 +00:00

capabilities.conf

Add futimens and utimensat system calls.

2015-01-23 21:07:08 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

Change the default method for device_quiesce() to return 0 instead of

2015-01-08 21:46:28 +00:00

genassym.sh

…

imgact_aout.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

imgact_binmisc.c

At the suggestion of jhb, replace atomic_set/clear calls with use of

2015-06-24 15:52:26 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

imgact_gzip.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

imgact_shell.c

Allow multiple image activators to run on the same execution by changing

2014-09-04 21:31:25 +00:00

inflate.c

…

init_main.c

Generalised support for copy-on-write structures shared by threads.

2015-06-10 10:43:59 +00:00

init_sysent.c

Regen.

2015-04-18 21:50:53 +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

Prevent alq from panic when the invalid alq_file path specified.

2014-04-05 16:54:47 +00:00

kern_clock.c

Initialize ticks so that it wraps 10 minutes after boot to increase the

2015-02-05 01:43:21 +00:00

kern_clocksource.c

Add ddb command 'show clocksource' to display state of the per-cpu

2015-02-04 14:49:47 +00:00

kern_condvar.c

Revert r282971. It depends on condvar consumers not destroying condvars

2015-05-21 16:43:26 +00:00

kern_conf.c

Fix for out of order device destruction notifications when using the

2015-03-22 13:11:56 +00:00

kern_cons.c

CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten

2015-05-22 17:05:21 +00:00

kern_context.c

…

kern_cpu.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_cpuset.c

Un-static cpuset_which() - it's useful in other contexts, such as some

2015-06-26 04:14:05 +00:00

kern_ctf.c

Don't specify a resid parameter if we're just going to ignore it. Instead,

2015-02-20 20:49:00 +00:00

kern_descrip.c

fd: make rights a mandatory argument to fget_unlocked

2015-06-16 09:52:36 +00:00

kern_dtrace.c

Commit the rest of the changes that were intended to be part of r266826.

2014-05-29 01:42:22 +00:00

kern_dump.c

Factor out duplicated code from dumpsys() on each architecture into generic

2015-01-07 01:01:39 +00:00

kern_environment.c

Test if 'env' is NULL before doing memset() and strlen(),

2014-10-23 18:23:50 +00:00

kern_et.c

Trivial change / forced-commit to document prior change that slipped in

2015-03-16 19:29:19 +00:00

kern_event.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

kern_exec.c

Make KPI of vm_pager_get_pages() more strict: if a pager changes a page

2015-06-12 11:32:20 +00:00

kern_exit.c

Remove several write-only variables, all reported by the gcc 4.9

2015-05-29 13:24:17 +00:00

kern_fail.c

Use a regular sbuf + SYSCTL_OUT() rather than sbuf_new_for_sysctl() with

2015-03-16 19:18:45 +00:00

kern_ffclock.c

The SYSCTL data pointers can come from userspace and must not be

2014-10-28 12:00:39 +00:00

kern_fork.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

kern_gzio.c

Move zlib.c from net to libkern.

2015-04-22 14:38:58 +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

Remove support for Xen PV domU kernels. Support for HVM domU kernels

2015-04-30 15:48:48 +00:00

kern_jail.c

Initialise pr_enforce_statfs from the "default" sysctl value and

2015-06-17 13:15:54 +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

Generalised support for copy-on-write structures shared by threads.

2015-06-10 10:43:59 +00:00

kern_ktr.c

Expand ktr_mask to be a 64-bit unsigned integer.

2015-05-22 11:09:41 +00:00

kern_ktrace.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_linker.c

Revert r284153, as I believe it breaks the dtrace sdt module. I will

2015-06-08 18:06:00 +00:00

kern_lock.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_lockf.c

Improve style and fix a possible use-after-free case introduced in r268384

2015-01-10 06:48:35 +00:00

kern_lockstat.c

- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging

2013-11-25 07:38:45 +00:00

kern_loginclass.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

kern_malloc.c

The vmem callback to reclaim kmem arena address space on low or

2015-05-09 20:08:36 +00:00

kern_mbuf.c

Fix integer truncation bug in malloc(9)

2015-04-01 12:42:26 +00:00

kern_mib.c

Allow the kern.osrelease and kern.osreldate sysctl values to be set in a

2015-02-27 16:28:55 +00:00

kern_module.c

…

kern_mtxpool.c

Garbage collect mtxpool_lockbuilder, the mutex pool historically used

2014-05-02 07:57:40 +00:00

kern_mutex.c

several lockstat improvements

2015-06-12 10:01:24 +00:00

kern_ntptime.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_osd.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_physio.c

Rewrite physio() to not allocate pbufs for unmapped I/O.

2015-04-21 10:55:53 +00:00

kern_pmc.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_poll.c

When a kernel has DEVICE_POLLING turned on but no drivers have

2015-04-14 14:22:34 +00:00

kern_priv.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_proc.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

kern_procctl.c

Reparenting done by debugger attach can leave reaper without direct

2015-02-15 08:44:30 +00:00

kern_prot.c

Generalised support for copy-on-write structures shared by threads.

2015-06-10 10:43:59 +00:00

kern_racct.c

nit: Rename racct_alloc_resource to racct_adjust_resource.

2015-06-14 08:33:14 +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 kern.racct.enable tunable and RACCT_DISABLED config option.

2015-04-29 10:23:02 +00:00

kern_resource.c

rlimit: deduplicate code in chg* functions

2015-06-25 00:15:37 +00:00

kern_rmlock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_rwlock.c

several lockstat improvements

2015-06-12 10:01:24 +00:00

kern_sdt.c

Print a backtrace if the SDT(9) stub gets called so that there's at least

2014-02-22 01:41:45 +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

Properly null-terminate strings in a kernel dump header. A version string

2015-05-19 16:23:47 +00:00

kern_sig.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

kern_switch.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_sx.c

several lockstat improvements

2015-06-12 10:01:24 +00:00

kern_synch.c

Remove several write-only variables, all reported by the gcc 4.9

2015-05-29 13:24:17 +00:00

kern_syscalls.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

kern_sysctl.c

Implement a simple OID number garbage collector. Given the increasing

2015-03-25 08:55:34 +00:00

kern_tc.c

Tweaks for r284178:

2015-06-11 04:41:54 +00:00

kern_thr.c

Generalised support for copy-on-write structures shared by threads.

2015-06-10 10:43:59 +00:00

kern_thread.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

kern_time.c

Fix an off by one in ppsratecheck(). If you asked for N=1 you'd get one,

2015-01-11 20:48:29 +00:00

kern_timeout.c

Fix my stupid restoral of old code.. must be c_iflags now.

2015-04-14 00:02:39 +00:00

kern_umtx.c

Clean up some cosmetic nits in kern_umtx.c, found during recent work

2015-03-28 21:21:40 +00:00

kern_uuid.c

Fix a bug in be_uuid_dec(); it called le16dec() instead of be16dec(),

2014-02-13 22:24:36 +00:00

kern_xxx.c

…

ksched.c

…

link_elf_obj.c

Move zlib.c from net to libkern.

2015-04-22 14:38:58 +00:00

link_elf.c

Move zlib.c from net to libkern.

2015-04-22 14:38:58 +00:00

linker_if.m

…

Make.tags.inc

Remove AppleTalk support.

2014-03-14 06:29:43 +00:00

Makefile

…

makesyscalls.sh

Fix syscalls that can be loaded as kernel modules - they were not given

2013-12-15 23:19:42 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

In preparation for switching linuxulator to the use the native 1:1

2015-05-24 14:44:06 +00:00

posix4_mib.c

…

sched_4bsd.c

Add kern.racct.enable tunable and RACCT_DISABLED config option.

2015-04-29 10:23:02 +00:00

sched_ule.c

Use sbuf_new_for_sysctl() instead of plain sbuf_new() to ensure sysctl

2015-03-14 18:42:30 +00:00

serdev_if.m

…

stack_protector.c

Use nitems() macro instead of __arraycount()

2015-06-16 20:19:00 +00:00

subr_acl_nfs4.c

…

subr_acl_posix1e.c

…

subr_autoconf.c

…

subr_blist.c

…

subr_bufring.c

…

subr_bus_dma.c

Add bus_dmamap_load_ma() function to load map with the array of

2013-10-27 21:39:16 +00:00

subr_bus.c

Fix handling of BUS_PROBE_NOWILDCARD in 'device_probe_child()'.

2015-04-15 16:22:05 +00:00

subr_busdma_bufalloc.c

Fix integer truncation bug in malloc(9)

2015-04-01 12:42:26 +00:00

subr_capability.c

Remove duplicated includes.

2014-06-26 13:57:44 +00:00

subr_clock.c

For architectures where time_t is wide enough, in particular, 64bit

2014-12-12 09:37:18 +00:00

subr_counter.c

Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized.

2014-02-10 19:59:46 +00:00

subr_devstat.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

subr_disk.c

…

subr_dnvlist.c

Remove the nvlist_.*[fv] functions.

2015-04-29 22:57:04 +00:00

subr_dummy_vdso_tc.c

Update the vdso timehands only via tc_windup().

2015-01-20 03:54:30 +00:00

subr_eventhandler.c

…

subr_fattime.c

Where appropriate, use the modern terms for the one true time base

2014-12-21 05:07:11 +00:00

subr_firmware.c

…

subr_hash.c

…

subr_hints.c

Add a new device control utility for new-bus devices called devctl. This

2015-02-06 16:09:01 +00:00

subr_kdb.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

subr_kobj.c

…

subr_lock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

subr_log.c

…

subr_mbpool.c

All mbuf external free functions never fail, so let them be void.

2014-07-11 13:58:48 +00:00

subr_mchain.c

…

subr_module.c

Turns out, this isn't only called from i386...

2014-12-30 02:39:47 +00:00

subr_msgbuf.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

subr_nvlist.c

Fix memory leak.

2015-05-20 17:48:22 +00:00

subr_nvpair.c

Style.

2015-05-20 17:47:01 +00:00

subr_param.c

Remove support for Xen PV domU kernels. Support for HVM domU kernels

2015-04-30 15:48:48 +00:00

subr_pcpu.c

Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized.

2014-02-10 19:59:46 +00:00

subr_pctrie.c

…

subr_power.c

…

subr_prf.c

Add support for reading MAM attributes to camcontrol(8) and libcam(3).

2015-06-09 21:39:38 +00:00

subr_prof.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

subr_rman.c

Nuke the never-used RF_TIMESHARE feature, reducing the complexity of the

2014-07-16 22:18:19 +00:00

subr_rtc.c

…

subr_sbuf.c

The minimum sbuf buffer size is 2 bytes (a byte plus a nulterm), assert that.

2015-03-17 21:00:31 +00:00

subr_scanf.c

…

subr_sfbuf.c

Move KASSERT into locked region.

2014-08-11 15:06:07 +00:00

subr_sglist.c

Fix a couple of panics when detaching from a cxgbe/cxl interface that was

2015-01-26 16:26:28 +00:00

subr_sleepqueue.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

subr_smp.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

subr_stack.c

…

subr_syscall.c

Generalised support for copy-on-write structures shared by threads.

2015-06-10 10:43:59 +00:00

subr_taskqueue.c

MFuser/delphij/zfs-arc-rebase@r281754:

2015-05-26 01:40:33 +00:00

subr_terminal.c

vt(4): Adjust the cursor position after changing the window size

2014-11-01 17:05:15 +00:00

subr_trap.c

Generalised support for copy-on-write structures shared by threads.

2015-06-10 10:43:59 +00:00

subr_turnstile.c

ddb: finish converting boolean values.

2015-05-21 15:16:18 +00:00

subr_uio.c

Implement lockless resource limits.

2015-06-10 10:48:12 +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

CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten

2015-05-22 17:05:21 +00:00

subr_witness.c

witness: don't warn about matrix inconsistencies without holding the mutex

2015-06-07 18:59:47 +00:00

sys_capability.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

sys_generic.c

The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), and

2015-04-18 21:50:13 +00:00

sys_pipe.c

fd: remove filedesc argument from fdclose

2015-04-11 15:40:28 +00:00

sys_procdesc.c

Add a new fo_fill_kinfo fileops method to add type-specific information to

2014-09-22 16:20:47 +00:00

sys_process.c

Provide vnode in memory map info for files on tmpfs

2015-06-02 18:37:04 +00:00

sys_socket.c

In preparation of merging projects/sendfile, transform bare access to

2014-11-12 09:57:15 +00:00

syscalls.c

Regen.

2015-04-18 21:50:53 +00:00

syscalls.master

The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), and

2015-04-18 21:50:13 +00:00

systrace_args.c

Regen.

2015-04-18 21:50:53 +00:00

sysv_ipc.c

…

sysv_msg.c

Add kern.racct.enable tunable and RACCT_DISABLED config option.

2015-04-29 10:23:02 +00:00

sysv_sem.c

Add kern.racct.enable tunable and RACCT_DISABLED config option.

2015-04-29 10:23:02 +00:00

sysv_shm.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

tty_compat.c

…

tty_info.c

…

tty_inq.c

…

tty_outq.c

…

tty_pts.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

tty_tty.c

…

tty_ttydisc.c

…

tty.c

filedesc: simplify fget_unlocked & friends

2015-02-17 23:54:06 +00:00

uipc_accf.c

The accept filter code is not specific to the FreeBSD IPv4 network stack,

2014-07-26 19:27:34 +00:00

uipc_debug.c

Merge from projects/sendfile:

2014-11-30 12:52:33 +00:00

uipc_domain.c

CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten

2015-05-22 17:05:21 +00:00

uipc_mbuf2.c

Remove a 'This is dumb' comment that has been incorrect for at least a

2015-01-09 12:08:51 +00:00

uipc_mbuf.c

m_dup() is supposed to give a writable copy of an mbuf chain. It uses

2015-05-07 18:35:01 +00:00

uipc_mbufhash.c

Reduce header pollution.

2015-03-17 14:16:50 +00:00

uipc_mqueue.c

fd: remove filedesc argument from fdclose

2015-04-11 15:40:28 +00:00

uipc_sem.c

fd: remove filedesc argument from fdclose

2015-04-11 15:40:28 +00:00

uipc_shm.c

Make KPI of vm_pager_get_pages() more strict: if a pager changes a page

2015-06-12 11:32:20 +00:00

uipc_sockbuf.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

uipc_socket.c

soreceive_generic() still has similar KASSERT(), therefore instead of

2015-02-23 15:24:43 +00:00

uipc_syscalls.c

Make KPI of vm_pager_get_pages() more strict: if a pager changes a page

2015-06-12 11:32:20 +00:00

uipc_usrreq.c

fd: move out actual fp installation to _finstall

2015-06-14 14:08:52 +00:00

vfs_acl.c

Replace struct filedesc argument in getvnode with struct thread

2015-06-16 13:09:18 +00:00

vfs_aio.c

Make AIO to not allocate pbufs for unmapped I/O like r281825.

2015-04-22 18:11:34 +00:00

vfs_bio.c

Handle errors from background write of the cylinder group blocks.

2015-06-27 09:44:14 +00:00

vfs_cache.c

Modify kern___getcwd() to take max pathlen limit as an additional

2015-04-21 13:55:24 +00:00

vfs_cluster.c

Remove several write-only variables, all reported by the gcc 4.9

2015-05-29 13:24:17 +00:00

vfs_default.c

Fix the comment introduced in r276192 so that it clearly

2014-12-25 14:44:04 +00:00

vfs_export.c

After the changes in r274118 make NOIP kernels compile by hiding an

2014-11-06 12:19:39 +00:00

vfs_extattr.c

Replace struct filedesc argument in getvnode with struct thread

2015-06-16 13:09:18 +00:00

vfs_hash.c

Convert vfs hash lock from a mutex to an rwlock.

2014-12-30 21:40:45 +00:00

vfs_init.c

Remove several write-only variables, all reported by the gcc 4.9

2015-05-29 13:24:17 +00:00

vfs_lookup.c

Fix two issues with lockmgr(9) LK_CAN_SHARE() test, which determines

2014-11-02 13:10:31 +00:00

vfs_mount.c

Right now, dounmount() is called with unreferenced mount point.

2015-05-27 09:22:50 +00:00

vfs_mountroot.c

Remove the no-at variants of the kern_xx() syscall helpers. E.g., we

2014-11-13 18:01:51 +00:00

vfs_subr.c

zero this struct as it depends upon it...

2015-06-23 18:40:20 +00:00

vfs_syscalls.c

Replace struct filedesc argument in getvnode with struct thread

2015-06-16 13:09:18 +00:00

vfs_vnops.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

vnode_if.src

Catch up on r271387 and remove unused parameter from

2015-03-30 22:49:26 +00:00