Alan Somers a62772a78e fusefs: fix mmap'd writes in direct_io mode ... If a FUSE server returns FOPEN_DIRECT_IO in response to FUSE_OPEN, that instructs the kernel to bypass the page cache for that file. This feature is also known by libfuse's name: "direct_io". However, when accessing a file via mmap, there is no possible way to bypass the cache completely. This change fixes a deadlock that would happen when an mmap'd write tried to invalidate a portion of the cache, wrongly assuming that a write couldn't possibly come from cache if direct_io were set. Arguably, we could instead disable mmap for files with FOPEN_DIRECT_IO set. But allowing it is less likely to cause user complaints, and is more in keeping with the spirit of open(2), where O_DIRECT instructs the kernel to "reduce", not "eliminate" cache effects. PR: 247276 Reported by: trapexit@spawn.link Reviewed by: cem MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D26485		2020-09-24 16:27:53 +00:00
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amd64	Add a vmparam.h constant indicating pmap support for large pages.	2020-09-23 19:34:21 +00:00
arm	Add a vmparam.h constant indicating pmap support for large pages.	2020-09-23 19:34:21 +00:00
arm64	Clean up the arm64 bus_dma_run_filter	2020-09-24 10:42:28 +00:00
bsm	bsm: add AUE_CLOSERANGE	2020-04-24 01:27:25 +00:00
cam	mmc_da: universally use uint8_t for the partition index	2020-09-08 06:19:23 +00:00
cddl	loader: zfs should support bootonce an nextboot	2020-09-21 09:01:10 +00:00
compat	Do not leak oldvmspace if image activation failed	2020-09-23 18:03:07 +00:00
conf	Use envvar rather than nonstandard hint. lines	2020-09-23 19:18:53 +00:00
contrib	cache: drop the force flag from purgevfs	2020-09-23 10:46:07 +00:00
crypto	Don't return errors from the cryptodev_process() method.	2020-09-08 22:41:35 +00:00
ddb	ddb: clean up empty lines in .c and .h files	2020-09-01 22:14:30 +00:00
dev	Provide MS() and SM() macros for 80211 and wireless drivers.	2020-09-24 10:57:39 +00:00
dts	Remove licenses	2020-06-04 17:20:58 +00:00
fs	fusefs: fix mmap'd writes in direct_io mode	2020-09-24 16:27:53 +00:00
gdb	gdb(4): Support empty qSupported queries	2020-08-18 20:59:10 +00:00
geom	geom_part: make it possible recovering broken GPT after some LBAs cut off	2020-09-17 04:39:39 +00:00
gnu	Import DTS files for arm, arm64, riscv from Linux 5.8	2020-08-04 19:44:43 +00:00
i386	Add a vmparam.h constant indicating pmap support for large pages.	2020-09-23 19:34:21 +00:00
isa
kern	Fix some signed/unsigned comparison warnings in NFS	2020-09-24 15:38:01 +00:00
kgssapi	State kgssapi dependency on xdr.	2020-09-17 22:29:38 +00:00
libkern	arm64: check for CRC32 support via HWCAP	2020-09-08 15:39:19 +00:00
mips	Add a vmparam.h constant indicating pmap support for large pages.	2020-09-23 19:34:21 +00:00
modules	Don't define _STANDALONE when building kernel modules.	2020-09-24 07:10:34 +00:00
net	Rework part of routing code to reduce difference to D26449.	2020-09-21 20:02:26 +00:00
net80211	Provide MS() and SM() macros for 80211 and wireless drivers.	2020-09-24 10:57:39 +00:00
netgraph	ng_ether: Enter NET_EPOCH where required	2020-09-02 11:49:22 +00:00
netinet	Whitespace changes.	2020-09-24 12:26:06 +00:00
netinet6	Rework part of routing code to reduce difference to D26449.	2020-09-21 20:02:26 +00:00
netipsec	net: clean up empty lines in .c and .h files	2020-09-01 21:19:14 +00:00
netpfil	net: clean up empty lines in .c and .h files	2020-09-01 21:19:14 +00:00
netsmb	net: clean up empty lines in .c and .h files	2020-09-01 21:19:14 +00:00
nfs	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsclient	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsserver	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nlm	nlm: clean up empty lines in .c and .h files	2020-09-01 22:14:52 +00:00
ofed	infiniband: Appease Coverty	2020-08-31 16:17:28 +00:00
opencrypto	Include sys/types.h here	2020-09-15 15:21:29 +00:00
powerpc	Add a vmparam.h constant indicating pmap support for large pages.	2020-09-23 19:34:21 +00:00
riscv	Add a vmparam.h constant indicating pmap support for large pages.	2020-09-23 19:34:21 +00:00
rpc	Fix a potential memory leak in the NFS over TLS handling code.	2020-09-05 00:50:52 +00:00
security	mac_framework.h: fix build with DEBUG_VFS_LOCKS and !MAC	2020-09-03 20:30:52 +00:00
sys	Create a standalone version of sys/malloc.h	2020-09-24 06:40:35 +00:00
teken
tests	Add small tool to invoke kernel test framework tests.	2020-09-02 09:20:40 +00:00
tools	Add NetBSD compatible bus_space_peek_N() and bus_space_poke_N() functions.	2020-09-19 11:06:41 +00:00
ufs	Convert page cache read to VOP.	2020-09-15 22:06:36 +00:00
vm	Flag vm_reserv and vm_phys sysctls as MPSAFE.	2020-09-23 19:36:07 +00:00
x86	Add missing declarations of 64-bit variants of bus_peek/bus_poke on amd64.	2020-09-24 08:40:32 +00:00
xdr	xdr: clean up empty lines in .c and .h files	2020-09-01 22:13:28 +00:00
xen	xen: clean up empty lines in .c and .h files	2020-09-01 21:21:55 +00:00
Makefile