mckusick be6aa51161 When the number of dirty buffers rises too high, the buf_daemon runs ...

to help clean up. After selecting a potential buffer to write, this
patch has it acquire a lock on the vnode that owns the buffer before
trying to write it. The vnode lock is necessary to avoid a race with
some other process holding the vnode locked and trying to flush its
dirty buffers. In particular, if the vnode in question is a snapshot
file, then the race can lead to a deadlock. To avoid slowing down the
buf_daemon, it does a non-blocking lock request when trying to lock
the vnode. If it fails to get the lock it skips over the buffer and
continues down its queue looking for buffers to flush.

Sponsored by:	DARPA & NAI Labs.

2002-10-18 01:29:59 +00:00

..

bus_if.m

Add two interfaces to allow for busses to report the pnpinfo for

2002-10-07 05:06:38 +00:00

clock_if.m

Add a generic implementation of inittodr() and resettodr(), as well as

2002-04-04 23:39:10 +00:00

device_if.m

…

genassym.sh

…

imgact_aout.c

Use the fields in the sysentvec and in the vm map header in place of the

2002-09-21 22:07:17 +00:00

imgact_elf32.c

Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable

2002-07-20 02:56:12 +00:00

imgact_elf64.c

Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable

2002-07-20 02:56:12 +00:00

imgact_elf.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

imgact_elfN.c

Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable

2002-07-20 02:56:12 +00:00

imgact_gzip.c

Use the fields in the sysentvec and in the vm map header in place of the

2002-09-21 22:07:17 +00:00

imgact_shell.c

…

inflate.c

Modernize my email address.

2002-03-25 13:52:45 +00:00

init_main.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

init_sysent.c

Regen from syntax fix to syscalls.master.

2002-10-10 04:08:11 +00:00

kern_acct.c

Make sure that the accounting credential is saved along with the vp

2002-10-05 20:05:23 +00:00

kern_acl.c

Introduce support for Mandatory Access Control and extensible

2002-08-01 01:04:16 +00:00

kern_alq.c

- Export the alq daemon thread pointer.

2002-09-26 07:38:56 +00:00

kern_clock.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_condvar.c

Round out the facilty for a 'bound' thread to loan out its KSE

2002-10-09 02:33:36 +00:00

kern_conf.c

Don't allow dev_stdclone(9) to accept minors larger than the system is

2002-10-05 17:10:28 +00:00

kern_descrip.c

Many style and whitespace fixes.

2002-10-16 15:45:37 +00:00

kern_environment.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

kern_event.c

hashinit() calls MALLOC(), so release the filedesc lock in knote_attach()

2002-10-03 06:03:26 +00:00

kern_exec.c

- Move the 'done1' label down below the unlock of the proc lock and move

2002-10-11 21:04:01 +00:00

kern_exit.c

- Add a new global mutex 'ppeers_lock' to protect the p_peers list of

2002-10-15 00:14:32 +00:00

kern_fork.c

- Add a new global mutex 'ppeers_lock' to protect the p_peers list of

2002-10-15 00:14:32 +00:00

kern_idle.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_intr.c

Instead of (sizeof(source_buffer) - 1) bytes, copy at most

2002-10-17 21:02:02 +00:00

kern_jail.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

kern_kse.c

Round out the facilty for a 'bound' thread to loan out its KSE

2002-10-09 02:33:36 +00:00

kern_kthread.c

Some kernel threads try to do significant work, and the default KSTACK_PAGES

2002-10-02 07:44:29 +00:00

kern_ktr.c

- Export the alq daemon thread pointer.

2002-09-26 07:38:56 +00:00

kern_ktrace.c

Some kernel threads try to do significant work, and the default KSTACK_PAGES

2002-10-02 07:44:29 +00:00

kern_linker.c

fix kldload error return when a module is rejected because it's statically

2002-10-17 17:28:57 +00:00

kern_lock.c

Include <sys/lockmgr.h> for the definitions of the locking interfaces that

2002-08-27 09:59:47 +00:00

kern_lockf.c

Remove a conditional #include <sys/kernel.h>, it is already

2002-09-14 14:44:41 +00:00

kern_mac.c

Integrate mac_check_socket_send() and mac_check_socket_receive()

2002-10-06 14:39:15 +00:00

kern_malloc.c

- Split UMA_ZFLAG_OFFPAGE into UMA_ZFLAG_OFFPAGE and UMA_ZFLAG_HASH.

2002-09-18 08:26:30 +00:00

kern_mib.c

Update a sysctl to use _POSIX_VERSION from <sys/unistd.h>, instead of

2002-10-13 14:26:29 +00:00

kern_module.c

- Remove Giant acquisition from modevent(), modfnext(), modstat() and

2002-06-26 00:31:44 +00:00

kern_mtxpool.c

Change callers of mtx_init() to pass in an appropriate lock type name. In

2002-04-04 21:03:38 +00:00

kern_mutex.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_ntptime.c

Remove an unused variable.

2002-10-11 10:36:22 +00:00

kern_physio.c

Change iov_base's type from char *' to the standard void *'. All

2002-10-11 14:58:34 +00:00

kern_poll.c

Increase size of ifnet.if_flags from 16 bits (short) to 32 bits (int). To avoid

2002-08-18 07:05:00 +00:00

kern_proc.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

kern_prot.c

Include file cleanup; mac.h and malloc.h at one point had ordering

2002-08-01 17:47:56 +00:00

kern_resource.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_sema.c

Change callers of mtx_init() to pass in an appropriate lock type name. In

2002-04-04 21:03:38 +00:00

kern_shutdown.c

Add ability to dump stacktraces on kernel panics when DDB is compiled into

2002-09-19 18:49:46 +00:00

kern_sig.c

Fix mis-indentation.

2002-10-02 09:09:25 +00:00

kern_subr.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_switch.c

Did you ever notice how stupid bugs show up much clearer

2002-10-14 20:43:02 +00:00

kern_sx.c

Set the lock type equal to the lock name for now as all of the current

2002-04-04 20:49:35 +00:00

kern_synch.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_syscalls.c

- Lock down the ``module'' structure by adding an SX lock that is used by

2002-03-18 07:45:30 +00:00

kern_sysctl.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

kern_tc.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

kern_thread.c

Round out the facilty for a 'bound' thread to loan out its KSE

2002-10-09 02:33:36 +00:00

kern_time.c

Round up instead of towards 0 in clock_getres() so that a resolution of

2002-09-25 12:00:38 +00:00

kern_timeout.c

Fix a format buglet.

2002-09-05 11:42:03 +00:00

kern_uuid.c

Include <sys/systm.h> for the declarations of many things instead of

2002-08-22 12:47:22 +00:00

kern_xxx.c

more caddr_t removal.

2002-06-29 02:00:02 +00:00

ksched.c

Tidy up the scheduler's code for changing the priority of a thread.

2002-10-14 20:34:31 +00:00

link_elf_obj.c

Fix kernel module loading on ia64. Cross-module function calls

2002-10-15 05:40:07 +00:00

link_elf.c

Fix kernel module loading on ia64. Cross-module function calls

2002-10-15 05:40:07 +00:00

linker_if.m

…

Make.tags.inc

…

Makefile

…

makesyscalls.sh

Add the rest of the kernel support for the sem_ API in kern/uipc_sem.c.

2002-09-19 00:43:32 +00:00

md4c.c

…

md5c.c

Bring sys/kern/md5c.c in sync with the userland version.

2002-06-24 14:15:25 +00:00

p1003_1b.c

Change p_can{debug,see,sched,signal}()'s first argument to be a thread

2002-05-19 00:14:50 +00:00

posix4_mib.c

Add the rest of the kernel support for the sem_ API in kern/uipc_sem.c.

2002-09-19 00:43:32 +00:00

sched_4bsd.c

Tidy up the scheduler's code for changing the priority of a thread.

2002-10-14 20:34:31 +00:00

subr_acl_posix1e.c

Introduce support for Mandatory Access Control and extensible

2002-08-01 01:04:16 +00:00

subr_autoconf.c

Remove __P.

2002-03-19 21:25:46 +00:00

subr_blist.c

Now that daddr_t has grown up, use %lld to printf it and cast it to long

2002-05-18 23:46:04 +00:00

subr_bus.c

Use ; not , as statement separator in PDEBUG() macro.

2002-10-15 18:56:13 +00:00

subr_clist.c

Remove __P.

2002-03-19 21:25:46 +00:00

subr_clock.c

Use the CPU_* OID constants instead of OID_AUTO for the clock-related

2002-08-07 19:43:54 +00:00

subr_devstat.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

subr_disk.c

Separate fiels reported by disk_err() with spaces, so that output doesn't

2002-10-17 23:48:29 +00:00

subr_disklabel.c

(This commit touches about 15 disk device drivers in a very consistent

2002-09-20 19:36:05 +00:00

subr_diskmbr.c

Split MBR and PC98 on-disk sliceformats out from disklabel.h, step 1:

2002-10-01 07:24:55 +00:00

subr_diskslice.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

subr_eventhandler.c

Wrap a line longer than 80 characters.

2002-07-19 17:44:44 +00:00

subr_hints.c

Cosmetic tweaks. Try and keep the style more consistent, catch some stray

2002-05-01 02:51:50 +00:00

subr_kobj.c

Convert hit and miss counters to unsigned values. Surely negative values

2002-06-10 22:40:26 +00:00

subr_log.c

In an SMP environment post-Giant it is no longer safe to blindly

2002-10-03 02:13:00 +00:00

subr_mbuf.c

Fix a fairly subtle bug in mbuf_init() where the reference counter

2002-10-16 19:59:08 +00:00

subr_mchain.c

Change iov_base's type from char *' to the standard void *'. All

2002-10-11 14:58:34 +00:00

subr_module.c

…

subr_param.c

Change hw.physmem and hw.usermem to unsigned long like they used to be

2002-08-30 04:04:37 +00:00

subr_pcpu.c

…

subr_power.c

Use ISO 9X variadic macro format; arguments are not optional, just

2002-07-15 17:17:56 +00:00

subr_prf.c

Fix %z to always print values as signed like it is supposed to.

2002-10-11 17:54:55 +00:00

subr_prof.c

Don't #error if we are lint.

2002-10-01 13:15:11 +00:00

subr_rman.c

Add debug.rman_debug sysctl MIB and loader tunable instead of broken

2002-09-05 11:45:02 +00:00

subr_rtc.c

Use the CPU_* OID constants instead of OID_AUTO for the clock-related

2002-08-07 19:43:54 +00:00

subr_sbuf.c

Add the new function "sbuf_done()" which returns non-zero if the sbuf is

2002-10-04 09:58:17 +00:00

subr_scanf.c

Fix mis-indentation.

2002-10-02 09:09:25 +00:00

subr_smp.c

Completely redo thread states.

2002-09-11 08:13:56 +00:00

subr_taskqueue.c

If we fail to write to a vnode during a ktrace write, then we drop all

2002-08-01 13:35:38 +00:00

subr_trap.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

subr_turnstile.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

subr_witness.c

Register the machine check private state spinlock on ia64.

2002-10-12 00:33:36 +00:00

subr_xxx.c

Here follows the new kernel dumping infrastructure.

2002-03-31 22:37:00 +00:00

sys_generic.c

Be consistent about "static" functions: if the function is marked

2002-09-28 17:15:38 +00:00

sys_pipe.c

Remove a KASSERT I added in 1.73 to catch uninitialized pipes.

2002-10-14 21:15:04 +00:00

sys_process.c

Add a missing PROC_UNLOCK in ptrace() for the PT_IO case.

2002-10-16 16:28:33 +00:00

sys_socket.c

Integrate mac_check_socket_send() and mac_check_socket_receive()

2002-10-06 14:39:15 +00:00

syscalls.c

Regen from syntax fix to syscalls.master.

2002-10-10 04:08:11 +00:00

syscalls.master

Restore pointer that was removed in 1.128. This wasn't a merge-o.

2002-10-15 01:36:45 +00:00

sysv_ipc.c

Change the suser() API to take advantage of td_ucred as well as do a

2002-04-01 21:31:13 +00:00

sysv_msg.c

Make SYSVMSG mpsafe. Right now there is a global lock over the

2002-08-13 08:00:36 +00:00

sysv_sem.c

Make SYSVSEM mpsafe. Each semaphore set gets its own lock, however

2002-08-13 08:47:17 +00:00

sysv_shm.c

return foo -> return (foo)

2002-08-15 02:10:12 +00:00

tty_compat.c

Fixed some style bugs in the removal of __P(()). The main ones were

2002-03-24 05:09:11 +00:00

tty_conf.c

…

tty_cons.c

Use strlcpy() instead of strncpy() to copy NUL terminated strings

2002-10-17 20:03:38 +00:00

tty_pty.c

- Lock proctree_lock instead of pgrpsess_lock.

2002-04-16 17:09:22 +00:00

tty_subr.c

Remove __P.

2002-03-19 21:25:46 +00:00

tty_tty.c

Pass active_cred and file_cred into the MAC framework explicitly

2002-08-19 19:04:53 +00:00

tty.c

In an SMP environment post-Giant it is no longer safe to blindly

2002-10-03 02:13:00 +00:00

uipc_accf.c

…

uipc_cow.c

Change iov_base's type from char *' to the standard void *'. All

2002-10-11 14:58:34 +00:00

uipc_domain.c

Back out my lats commit of locking down a socket, it conflicts with hsu's work.

2002-05-31 11:52:35 +00:00

uipc_jumbo.c

o Lock page queue accesses by vm_page_free().

2002-07-21 19:06:46 +00:00

uipc_mbuf2.c

Replace aux mbufs with packet tags:

2002-10-16 01:54:46 +00:00

uipc_mbuf.c

Replace aux mbufs with packet tags:

2002-10-16 01:54:46 +00:00

uipc_proto.c

…

uipc_sem.c

Be consistent about funtions being static.

2002-10-16 10:42:13 +00:00

uipc_sockbuf.c

Use m_length() instead of home-rolled versions.

2002-09-18 19:44:14 +00:00

uipc_socket2.c

Use m_length() instead of home-rolled versions.

2002-09-18 19:44:14 +00:00

uipc_socket.c

Modify label allocation semantics for sockets: pass in soalloc's malloc

2002-10-05 21:23:47 +00:00

uipc_syscalls.c

Integrate mac_check_socket_send() and mac_check_socket_receive()

2002-10-06 14:39:15 +00:00

uipc_usrreq.c

- Allocate only enough space for a temporary buffer to hold

2002-10-17 15:52:42 +00:00

vfs_acl.c

Introduce support for Mandatory Access Control and extensible

2002-08-01 01:04:16 +00:00

vfs_aio.c

Eliminate the unnecessary clearing of flag bits that are already clear

2002-10-14 01:21:37 +00:00

vfs_bio.c

When the number of dirty buffers rises too high, the buf_daemon runs

2002-10-18 01:29:59 +00:00

vfs_cache.c

Split up __getcwd so that kernel callers of the internal version

2002-09-02 22:40:30 +00:00

vfs_cluster.c

- Use incore() where no other interlock locking is necessary.

2002-09-25 02:12:32 +00:00

vfs_default.c

Regularize the vop_stdlock'ing protocol across all the filesystems

2002-10-14 03:20:36 +00:00

vfs_export.c

Partial backout of 1.318, remove error handling added because it may be

2002-06-30 05:23:58 +00:00

vfs_extattr.c

Incremental style improvements: more consistently avoid assignments

2002-10-10 13:59:58 +00:00

vfs_init.c

We don't need to check the return value of malloc() against

2002-06-22 21:44:11 +00:00

vfs_lookup.c

- Replace v_flag with v_iflag and v_vflag

2002-08-04 10:29:36 +00:00

vfs_mount.c

- Don't protect mountedhere with the vn interlock.

2002-09-25 01:44:21 +00:00

vfs_subr.c

When scanning the freelist looking for candidate vnodes to recycle,

2002-10-14 19:54:39 +00:00

vfs_syscalls.c

Incremental style improvements: more consistently avoid assignments

2002-10-10 13:59:58 +00:00

vfs_vnops.c

Under DIAGNOSTIC, complain if ENOIOCTL leaks out through VOP_IOCTL().

2002-09-26 21:21:13 +00:00

vnode_if.src

- We don't need any automated lock checking for vop_islocked.

2002-09-26 00:31:16 +00:00