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Amit Shah 531295e63b virtio: console: Don't block entire guest if host doesn't read data ... If the host is slow in reading data or doesn't read data at all, blocking write calls not only blocked the program that called write() but the entire guest itself. To overcome this, let's not block till the host signals it has given back the virtio ring element we passed it. Instead, send the buffer to the host and return to userspace. This operation then becomes similar to how non-blocking writes work, so let's use the existing code for this path as well. This code change also ensures blocking write calls do get blocked if there's not enough room in the virtio ring as well as they don't return -EAGAIN to userspace. Signed-off-by: Amit Shah <amit.shah@redhat.com> Acked-by: Hans de Goede <hdegoede@redhat.com> CC: stable@kernel.org Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		15 years ago
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agp	drm/i915,agp/intel: Add second set of PCI-IDs for B43	15 years ago
hw_random	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	15 years ago
ip2	ip2: return -EFAULT on copy_to_user errors	15 years ago
ipmi	ipmi: fix hardcoded ipmi device exit path warning	15 years ago
mwave	mwave: fix read buffer overflow	16 years ago
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	15 years ago
rio	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
tpm	tpm_tis: fix subsequent suspend failures	15 years ago
xilinx_hwicap	of: Fix missing includes	15 years ago
.gitignore	…
Kconfig	pc8736x_gpio: depends on X86_32	15 years ago
Makefile	tty: implement BTM as mutex instead of BKL	15 years ago
amiserial.c	tty: release BTM while sleeping in block_til_ready	15 years ago
apm-emulation.c	drivers: Push down BKL into various drivers	15 years ago
applicom.c	drivers/char/applicom.c: use memdup_user	15 years ago
applicom.h	…
bfin-otp.c	const: constify remaining file_operations	16 years ago
bfin_jtag_comm.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
briq_panel.c	tty: replace BKL with a new tty_lock	15 years ago
bsr.c	of/address: Clean up function declarations	15 years ago
cd1865.h	…
consolemap.c	…
cp437.uni	…
cs5535_gpio.c	drivers: Remove BKL from cs5535_gpio	16 years ago
cyclades.c	tty: introduce wait_event_interruptible_tty	15 years ago
defkeymap.c_shipped	…
defkeymap.map	…
digi1.h	…
digiFep1.h	…
digiPCI.h	…
ds1302.c	…
ds1620.c	drivers: Push down BKL into various drivers	15 years ago
dsp56k.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
dtlk.c	drivers: Push down BKL into various drivers	15 years ago
efirtc.c	efirtc: explicitly set llseek to no_llseek	15 years ago
epca.c	epca: Kill the big kernel lock	15 years ago
epca.h	…
epcaconfig.h	…
generic_nvram.c	drivers: Push down BKL into various drivers	15 years ago
generic_serial.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
genrtc.c	drivers: Push down BKL into various drivers	15 years ago
hangcheck-timer.c	Input: sysrq - drop tty argument form handle_sysrq()	15 years ago
hpet.c	drivers: Push down BKL into various drivers	15 years ago
hvc_beat.c	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	15 years ago
hvc_console.c	Input: sysrq - drop tty argument form handle_sysrq()	15 years ago
hvc_console.h	hvc_console: make the ops pointer const.	15 years ago
hvc_irq.c	…
hvc_iseries.c	Merge branch 'for-next' into for-linus	15 years ago
hvc_iucv.c	Add param ops struct for hvc_iucv driver.	15 years ago
hvc_rtas.c	hvc_console: make the ops pointer const.	15 years ago
hvc_tile.c	arch/tile: catch up on various minor cleanups.	15 years ago
hvc_udbg.c	hvc_console: make the ops pointer const.	15 years ago
hvc_vio.c	hvc_console: make the ops pointer const.	15 years ago
hvc_xen.c	hvc_console: make the ops pointer const.	15 years ago
hvcs.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
hvsi.c	Input: sysrq - drop tty argument form handle_sysrq()	15 years ago
i8k.c	procfs: Push down the bkl from ioctl	15 years ago
isicom.c	isicom: kill off the BKL	15 years ago
istallion.c	tty: introduce wait_event_interruptible_tty	15 years ago
keyboard.c	tty: Move the vt_tty field from the vc_data into the standard tty_port	15 years ago
lp.c	lp: move compat_ioctl handling into lp.c	15 years ago
mbcs.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
mbcs.h	…
mem.c	char: Mark /dev/zero and /dev/kmem as not capable of writeback	15 years ago
misc.c	char: add WARN_ON() in misc_deregister()	15 years ago
mmtimer.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
moxa.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
moxa.h	…
mspec.c	tree-wide: fix assorted typos all over the place	15 years ago
mxser.c	mxser: remove unnesesary NULL check	15 years ago
mxser.h	…
n_gsm.c	drivers/char/n_gsm.c: add missing spin_unlock_irqrestore	15 years ago
n_hdlc.c	tty: replace BKL with a new tty_lock	15 years ago
n_r3964.c	tty: introduce wait_event_interruptible_tty	15 years ago
n_tty.c	tty: Add EXTPROC support for LINEMODE	15 years ago
nozomi.c	kfifo: fix kfifo miss use of nozami.c	15 years ago
nsc_gpio.c	…
nvram.c	drivers: Push down BKL into various drivers	15 years ago
nwbutton.c	…
nwbutton.h	…
nwflash.c	drivers: Push down BKL into various drivers	15 years ago
pc8736x_gpio.c	drivers: Remove BKL from pc8736x_gpio	16 years ago
ppdev.c	drivers/char/ppdev.c: use kasprintf	15 years ago
ps3flash.c	drop unused dentry argument to ->fsync	15 years ago
pty.c	tty: fix fu_list abuse	15 years ago
ramoops.c	char drivers: RAM oops/panic logger	15 years ago
random.c	random: Reorder struct entropy_store to remove padding on 64bits	15 years ago
raw.c	drivers: Push down BKL into various drivers	15 years ago
riscom8.c	riscom8: kill use of lock_kernel	15 years ago
riscom8.h	…
riscom8_reg.h	…
rocket.c	rocket: add a mutex_unlock()	15 years ago
rocket.h	…
rocket_int.h	…
rtc.c	of/device: Replace struct of_device with struct platform_device	15 years ago
scc.h	…
scx200_gpio.c	drivers: Remove BKL from scx200_gpio	16 years ago
selection.c	tty: remove tty_lock_nested	15 years ago
ser_a2232.c	headers: remove sched.h from interrupt.h	16 years ago
ser_a2232.h	…
ser_a2232fw.ax	…
ser_a2232fw.h	…
serial167.c	tty: release BTM while sleeping in block_til_ready	15 years ago
snsc.c	…
snsc.h	…
snsc_event.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
sonypi.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
specialix.c	tty: release BTM while sleeping in block_til_ready	15 years ago
specialix_io8.h	…
stallion.c	stallion: prune lock_kernel calls	15 years ago
sx.c	tty: replace BKL with a new tty_lock	15 years ago
sx.h	…
sxboards.h	…
sxwindow.h	…
synclink.c	tty: release BTM while sleeping in block_til_ready	15 years ago
synclink_gt.c	synclink: add mutex_unlock() on error path	15 years ago
synclinkmp.c	tty: release BTM while sleeping in block_til_ready	15 years ago
sysrq.c	Input: sysrq - drop tty argument form handle_sysrq()	15 years ago
tb0219.c	mips: Remove BKL from tb0219	16 years ago
tlclk.c	headers: remove sched.h from interrupt.h	16 years ago
toshiba.c	tosh: Use non bkl ioctl	15 years ago
tty_audit.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
tty_buffer.c	tty: fix obsolete comment on tty_insert_flip_string_fixed_flag	15 years ago
tty_io.c	tty: fix tty_line must not be equal to number of allocated tty pointers in tty driver	15 years ago
tty_ioctl.c	tty: Add EXTPROC support for LINEMODE	15 years ago
tty_ldisc.c	tty: remove tty_lock_nested	15 years ago
tty_mutex.c	tty: implement BTM as mutex instead of BKL	15 years ago
tty_port.c	tty: release BTM while sleeping in block_til_ready	15 years ago
uv_mmtimer.c	x86, UV: Fix RTC latency bug by reading replicated cachelines	15 years ago
vc_screen.c	tty: replace BKL with a new tty_lock	15 years ago
viotape.c	of: Always use 'struct device.of_node' to get device node pointer.	15 years ago
virtio_console.c	virtio: console: Don't block entire guest if host doesn't read data	15 years ago
vme_scc.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
vt.c	vt: Fix console corruption on driver hand-over.	15 years ago
vt_ioctl.c	Input: use PIT_TICK_RATE in vt beep ioctl	15 years ago