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196d38bccf
linux/drivers
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Kent Overstreet 196d38bccf block: Generic bio chaining 
This adds a generic mechanism for chaining bio completions. This is
going to be used for a bio_split() replacement, and it turns out to be
very useful in a fair amount of driver code - a fair number of drivers
were implementing this in their own roundabout ways, often painfully.

Note that this means it's no longer to call bio_endio() more than once
on the same bio! This can cause problems for drivers that save/restore
bi_end_io. Arguably they shouldn't be saving/restoring bi_end_io at all
- in all but the simplest cases they'd be better off just cloning the
bio, and immutable biovecs is making bio cloning cheaper. But for now,
we add a bio_endio_nodec() for these cases.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
2013-11-23 22:33:56 -08:00
..
accessibility
acpi More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
amba
ata More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
atm atm: idt77252: fix dev refcnt leak 2013-11-19 15:53:02 -05:00
auxdisplay
base More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
bcma Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-11-13 17:40:34 +09:00
block rbd: Refactor bio cloning 2013-11-23 22:33:54 -08:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2013-11-05 15:58:21 -05:00
bus Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 08:51:29 +09:00
cdrom
char Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2013-11-21 19:46:00 -08:00
clk Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
clocksource
connector connector: improved unaligned access error fix 2013-11-14 17:19:20 -05:00
cpufreq More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
cpuidle ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
crypto tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
dca
devfreq Merge branch 'pm-devfreq' 2013-11-07 19:24:20 +01:00
dio
dma Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-11-20 13:20:24 -08:00
edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac 2013-11-18 14:51:52 -08:00
eisa
extcon
firewire tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
firmware Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 07:55:21 +09:00
fmc
gpio ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node 2013-11-14 23:14:43 +01:00
gpu drm/sysfs: fix hotplug regression since lifetime changes 2013-11-21 21:10:00 +10:00
hid More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
hsi
hv
hwmon hwmon: (acpi_power_meter) Fix acpi_bus_get_device() return value check 2013-11-20 08:31:01 -08:00
hwspinlock
i2c More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
ide More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
idle Merge branch 'pm-cpuidle' 2013-11-19 01:06:28 +01:00
iio kfifo API type safety 2013-11-15 09:32:23 +09:00
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-11-22 10:52:03 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2013-11-15 16:48:22 -08:00
iommu Don't try to compile shmobile-iommu outside of ARM 2013-11-15 18:57:42 -08:00
ipack
irqchip Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 08:51:29 +09:00
isdn net: rework recvmsg handler msg_name and msg_namelen logic 2013-11-20 21:52:30 -05:00
leds
lguest x86, asmlinkage, lguest: Pass in globals into assembler statement 2013-11-07 12:13:05 +10:30
macintosh DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
mailbox
md block: Generic bio chaining 2013-11-23 22:33:56 -08:00
media Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-11-20 13:20:24 -08:00
memory
memstick tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
message block: Kill bio_segments()/bi_vcnt usage 2013-11-23 22:33:51 -08:00
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
misc Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-11-20 13:20:24 -08:00
mmc More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
mtd Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-11-20 13:20:24 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-11-22 09:57:35 -08:00
nfc
ntb dmaengine: remove DMA unmap flags 2013-11-14 11:04:38 -08:00
nubus
of Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 07:55:21 +09:00
oprofile
parisc
parport Kconfig cleanups for v3.13 2013-11-15 14:05:15 -08:00
pci PCI updates for v3.13: 2013-11-22 10:53:47 -08:00
pcmcia DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
phy
pinctrl pinctrl: single: call pcs_soc->rearm() whenever IRQ mask is changed 2013-11-14 10:43:17 -08:00
platform More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
pnp ACPI: Eliminate the DEVICE_ACPI_HANDLE() macro 2013-11-14 23:17:21 +01:00
power Highlights: 2013-11-18 15:35:09 -08:00
powercap PowerCap: Fix build error with option -Werror=format-security 2013-11-05 02:36:57 +01:00
pps drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptr 2013-11-13 12:09:35 +09:00
ps3
ptp
pwm
rapidio
regulator Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
remoteproc
reset
rpmsg
rtc ARM: drivers/rtc/rtc-at91rm9200.c: disable interrupts at shutdown 2013-11-21 16:42:27 -08:00
s390 block: Convert bio_for_each_segment() to bvec_iter 2013-11-23 22:33:49 -08:00
sbus
scsi block: Kill bio_segments()/bi_vcnt usage 2013-11-23 22:33:51 -08:00
sfi
sh
sn
spi More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
ssb
staging block: Convert bio_for_each_segment() to bvec_iter 2013-11-23 22:33:49 -08:00
target block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
tc
thermal Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-11-19 15:50:47 -08:00
tty Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-11-20 13:20:24 -08:00
uio drivers/uio/uio_pruss.c: use gen_pool_dma_alloc() to allocate sram memory 2013-11-13 12:09:23 +09:00
usb Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-11-22 10:52:03 -08:00
uwb Driver Core / sysfs patches for 3.13-rc1 2013-11-07 11:42:15 +09:00
vfio
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-11-22 10:52:03 -08:00
video ARM: SoC fixes for 3.13 merge window 2013-11-16 12:45:55 -08:00
virt
virtio Nothing really exciting: some groundwork for changing virtio endian, and 2013-11-15 13:28:47 +09:00
vlynq
vme
w1 drivers/w1/masters/w1-gpio.c: use dev_get_platdata() 2013-11-15 09:32:21 +09:00
watchdog watchdog: w83627hf: Use helper functions to access superio registers 2013-11-18 21:34:19 +01:00
xen More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
zorro
Kconfig ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
Makefile ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00