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freebsd-nq/sys
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Konstantin Belousov c506a6386f kern_sendfile.c: fix bugs with handling of busy page states. 
- Do not call into a vnode pager while leaving some pages from the
  same block as the current run, xbusy. This immediately deadlocks if
  pager needs to instantiate the buffer.
- Only relookup bogus pages after io finished, otherwise we might
  obliterate the valid pages by out of date disk content.  While there,
  expand the comment explaining this pecularity.
- Do not double-unbusy on error.  Split unbusy for error case, which
  is left in the sendfile_swapin(), from the more properly coded
  normal case in sendfile_iodone().
- Add an XXXKIB comment explaining the serious bug in the validation
  algorithm, not fixed by this patch series.

PR:	244713
Reviewed by:	glebius, markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D24038
2020-03-30 22:13:32 +00:00
..
amd64
Merge ACPICA 20200326.
2020-03-27 00:29:33 +00:00
arm
remove extraneous double ;s in sys/
2020-03-30 16:04:25 +00:00
arm64
Expand generic subword atomic primitives
2020-03-25 23:12:43 +00:00
bsm
vfs: add realpathat syscall
2020-02-20 16:58:19 +00:00
cam
sys/cam: remove doubled ;s
2020-03-20 16:15:45 +00:00
cddl
MFOpenZFS: ZVOLs should not be allowed to have children
2020-03-25 15:56:18 +00:00
compat
compat/linux/linux.h depends on queue.h since r353725.
2020-03-26 17:12:55 +00:00
conf
Fix newvers.sh on macOS 10.15
2020-03-23 17:51:44 +00:00
contrib
Merge ACPICA 20200326.
2020-03-27 00:29:33 +00:00
crypto
Refactor driver and consumer interfaces for OCF (in-kernel crypto).
2020-03-27 18:25:23 +00:00
ddb
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
dev
Add support for multiple playback and recording devices per physical USB audio
2020-03-30 16:50:32 +00:00
dts
arm: zynq: An SPI driver for Zynq platforms
2020-02-28 10:57:23 +00:00
fs
Fine grain locking inside the cuse(3) kernel module.
2020-03-30 18:25:43 +00:00
gdb
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
geom
Refactor driver and consumer interfaces for OCF (in-kernel crypto).
2020-03-27 18:25:23 +00:00
gnu
dts: Update our copy for arm, arm64 and riscv dts to Linux 5.5
2020-02-28 15:42:51 +00:00
i386
Expand generic subword atomic primitives
2020-03-25 23:12:43 +00:00
isa
…
kern
kern_sendfile.c: fix bugs with handling of busy page states.
2020-03-30 22:13:32 +00:00
kgssapi
Refactor driver and consumer interfaces for OCF (in-kernel crypto).
2020-03-27 18:25:23 +00:00
libkern
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
mips
Refactor driver and consumer interfaces for OCF (in-kernel crypto).
2020-03-27 18:25:23 +00:00
modules
Introduce LINUXKPI_GENSRCS.
2020-03-20 21:06:58 +00:00
net
remove extraneous double ;s in sys/
2020-03-30 16:04:25 +00:00
net80211
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (7 of many)
2020-02-21 16:32:17 +00:00
netgraph
Fix spelling of "dropped".
2020-03-04 22:32:40 +00:00
netinet
Remove the "config" taskqgroup and its KPIs.
2020-03-30 14:24:03 +00:00
netinet6
Remove the "config" taskqgroup and its KPIs.
2020-03-30 14:24:03 +00:00
netipsec
Refactor driver and consumer interfaces for OCF (in-kernel crypto).
2020-03-27 18:25:23 +00:00
netpfil
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
netsmb
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
nfs
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
nfsclient
…
nfsserver
…
nlm
Remove stale FreeBSD_version checks.
2020-03-01 23:01:37 +00:00
ofed
Fix for double unlock in ipoib.
2020-03-16 12:33:57 +00:00
opencrypto
Refactor driver and consumer interfaces for OCF (in-kernel crypto).
2020-03-27 18:25:23 +00:00
powerpc
powerpc/pmap: Replace a logical TAILQ_FOREACH_SAFE with the real thing
2020-03-30 16:32:55 +00:00
riscv
Remove the secondary_stacks array in arm64 and riscv kernels.
2020-03-24 18:43:23 +00:00
rpc
Remove obsolete old-freebsd version compat shim.
2020-03-01 23:01:51 +00:00
security
Make sure we convert internal audit records for thr_new
2020-03-30 18:15:36 +00:00
sys
Remove the "config" taskqgroup and its KPIs.
2020-03-30 14:24:03 +00:00
teken
…
tests
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
tools
vfs: stop null checking routines in vop wrappers
2020-01-26 00:41:38 +00:00
ufs
VOP_GETPAGES_ASYNC(): consistently call iodone() callback in case of error.
2020-03-30 21:44:30 +00:00
vm
VOP_GETPAGES_ASYNC(): consistently call iodone() callback in case of error.
2020-03-30 21:44:30 +00:00
x86
Do not spuriously re-enable disabled io_apic pin on EOI for some configurations.
2020-03-18 21:34:52 +00:00
xdr
typo: s/impelmentation/implementation/.
2020-02-07 15:14:29 +00:00
xen
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (16 of many)
2020-02-25 19:04:39 +00:00
Makefile
Remove sparc64 kernel support
2020-02-03 17:35:11 +00:00