David Xu 12a480fa41 When a thread is blocked in direct write state, it only sets PIPE_DIRECTW ... flag but not PIPE_WANTW, but FIFO pipe code does not understand this internal state, when a FIFO peer reader closes the pipe, it wants to notify the writer, it checks PIPE_WANTW, if not set, it skips calling wakeup(), so blocked writer never noticed the case, but in general, the writer should return from the syscall with EPIPE error code and may get SIGPIPE signal. Setting the PIPE_WANTW fixed problem, or you can turn off direct write, it should fix the problem too. This bug is found by PR/170203. Another bug in FIFO pipe code is when peer closes the pipe, another end which is being blocked in select() or poll() is not notified, it missed to call pipeselwakeup(). Third problem is found in poll regression test, the existing code can not pass 6b,6c,6d tests, but FreeBSD-4 works. This commit does not fix the problem, I still need to study more to find the cause. PR: 170203 Tested by: Garrett Copper < yanegomi at gmail dot com >		2012-07-31 02:00:37 +00:00
..
amd64	Change (unused) prototype for stmxcsr() to match reality.	2012-07-30 19:26:02 +00:00
arm	These files will support the whole at91sam9x5 family when done,	2012-07-30 21:30:43 +00:00
boot	Pull the tier-2 card and change the sparc64 ZFS loader to no longer probe	2012-07-27 18:23:11 +00:00
bsm
cam	Remove opt_enc.h from files committed with r235911. enc(4) is the	2012-07-30 03:00:58 +00:00
cddl	Partial MFV (illumos-gate 13753:2aba784c276b)	2012-07-30 23:14:24 +00:00
compat	Cosmetics: define FREEBSD32_MINUSER and AOUT32_MINUSER for struct	2012-07-22 13:41:45 +00:00
conf	Until now KTR_ENTRIES, which defines the size of circular buffer used in	2012-07-30 22:46:42 +00:00
contrib	Update to latest git version of dtc to get new dtsv2 support,	2012-07-24 16:29:33 +00:00
crypto
ddb	Update the ddb and gdb backends for the new 'trace_thread' hook.	2012-04-12 21:34:58 +00:00
dev	- move the inclusion of netmap headers to the common part of the code;	2012-07-30 18:21:48 +00:00
fs	When a thread is blocked in direct write state, it only sets PIPE_DIRECTW	2012-07-31 02:00:37 +00:00
gdb	Update the ddb and gdb backends for the new 'trace_thread' hook.	2012-04-12 21:34:58 +00:00
geom	Partially revert r238886 in part of GEOM_VFS spoiling.	2012-07-29 20:04:09 +00:00
gnu/fs	Fix build:	2012-05-23 06:49:50 +00:00
i386	Regen.	2012-07-30 20:45:17 +00:00
ia64	Move PCPU initialization to a new function called cpu_pcpu_setup().	2012-07-08 18:00:22 +00:00
isa
kern	When a thread is blocked in direct write state, it only sets PIPE_DIRECTW	2012-07-31 02:00:37 +00:00
kgssapi
libkern	Fix unloading of libiconv module.	2012-06-11 17:42:39 +00:00
mips	Merge FreeBSD/beri Perforce change @211945 to head:	2012-07-28 11:09:03 +00:00
modules	Remove opt_enc.h from files committed with r235911. enc(4) is the	2012-07-30 03:00:58 +00:00
net	Hardcode the loopback rx/tx checkum options for IPv6 to on without	2012-07-28 20:31:39 +00:00
net80211	Add a check for dynamic OFDM/CCK channel types.	2012-07-01 04:25:49 +00:00
netatalk	Fix typos	2012-02-28 15:07:05 +00:00
netgraph	Add version so others can depend on this module	2012-07-27 13:57:28 +00:00
netinet	Fix the sctp_sockstore union such that userland programs don't depend	2012-07-26 08:10:29 +00:00
netinet6	For consistency put the IPsec comment iside the #fidef section.	2012-07-29 00:45:24 +00:00
netipsec	Fix a bug introduced in r221129 that leads to a panic wen using bundled	2012-07-22 17:46:05 +00:00
netipx
netnatm
netncp	Add characters mapping for codepages used in Germany.	2012-06-01 03:59:08 +00:00
netsmb	Change a duplicated check to clarify that we really want to set a	2012-07-10 21:02:59 +00:00
nfs
nfsclient	PR# 165923 reported intermittent write failures for dirty	2012-05-12 12:02:51 +00:00
nfsserver
nlm
ofed	Fix clang warning when compiling iw_cxgb.	2012-06-25 16:52:27 +00:00
opencrypto
pc98	Partially revert r217515 so that the mem_range_softc variable is always	2012-07-09 20:42:08 +00:00
pci	intpm: add ATI IXP400 pci id	2012-04-16 10:33:46 +00:00
powerpc	Avoid recursion on the pvh global lock in the aim oea pmap.	2012-07-10 22:10:21 +00:00
rpc
security	Check vplabel for NULL before dereferencing it. Fixes a panic	2012-05-03 15:51:34 +00:00
sparc64	Switch back to the 4BSD scheduler for now. There is some more or less	2012-06-30 14:55:36 +00:00
sys	When a thread is blocked in direct write state, it only sets PIPE_DIRECTW	2012-07-31 02:00:37 +00:00
teken
tools
ufs	Use NULL instead of 0 for pointers	2012-07-22 15:40:31 +00:00
vm	Eliminate an unneeded declaration. (I should have removed this as part	2012-07-30 20:38:37 +00:00
x86	Add rmb() to tsc_read_##x to enforce serialization of rdtsc captures.	2012-07-24 22:10:11 +00:00
xdr
xen	blkif interface comment cleanups. No functional changes	2012-02-29 17:47:01 +00:00
Makefile	Add sys/ofed to the 'make cscope' target.	2012-03-20 18:05:15 +00:00