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Damien Le Moal bf50545696 block: Introduce blk_revalidate_disk_zones() 
Drivers exposing zoned block devices have to initialize and maintain
correctness (i.e. revalidate) of the device zone bitmaps attached to
the device request queue (seq_zones_bitmap and seq_zones_wlock).

To simplify coding this, introduce a generic helper function
blk_revalidate_disk_zones() suitable for most (and likely all) cases.
This new function always update the seq_zones_bitmap and seq_zones_wlock
bitmaps as well as the queue nr_zones field when called for a disk
using a request based queue. For a disk using a BIO based queue, only
the number of zones is updated since these queues do not have
schedulers and so do not need the zone bitmaps.

With this change, the zone bitmap initialization code in sd_zbc.c can be
replaced with a call to this function in sd_zbc_read_zones(), which is
called from the disk revalidate block operation method.

A call to blk_revalidate_disk_zones() is also added to the null_blk
driver for devices created with the zoned mode enabled.

Finally, to ensure that zoned devices created with dm-linear or
dm-flakey expose the correct number of zones through sysfs, a call to
blk_revalidate_disk_zones() is added to dm_table_set_restrictions().

The zone bitmaps allocated and initialized with
blk_revalidate_disk_zones() are freed automatically from
__blk_release_queue() using the block internal function
blk_queue_free_zone_bitmaps().

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2018-10-25 11:17:40 -06:00
..
accessibility
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acpi pci-v4.20-changes 2018-10-25 06:50:48 -07:00
amba
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android android: binder: fix the race mmap and alloc_new_buf_locked 2018-09-12 09:18:29 +02:00
ata pci-v4.20-changes 2018-10-25 06:50:48 -07:00
atm atm: zatm: Fix empty body Clang warnings 2018-10-18 15:39:10 -07:00
auxdisplay gpiolib: Pass array info to get/set array functions 2018-09-13 11:16:54 +02:00
base Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 15:00:03 +01:00
bcma
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block block: Introduce blk_revalidate_disk_zones() 2018-10-25 11:17:40 -06:00
bluetooth Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
bus This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
cdrom cdrom: remove set but not used variable 'tocuse' 2018-10-25 11:17:39 -06:00
char Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
clk One fix for the Allwinner A10 SoC's audio PLL that wasn't properly set 2018-10-17 13:40:10 +02:00
clocksource arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
connector
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cpufreq Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 16:16:40 +01:00
cpuidle cpuidle: menu: Avoid computations when result will be discarded 2018-10-18 09:34:13 +02:00
crypto pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dax device-dax: Add missing address_space_operations 2018-09-22 09:07:33 -07:00
dca
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devfreq PM / devfreq: remove redundant null pointer check before kfree 2018-10-02 10:16:41 +09:00
dio
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dma pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dma-buf
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edac - amd64_edac: AMD family 0x17, models 0x10-0x2f support (Michael Jin) 2018-10-25 06:40:00 -07:00
eisa
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extcon
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firewire FireWire: clean up core-transaction.c kernel-doc 2018-09-06 09:41:09 -06:00
firmware EFI updates for v4.20: 2018-09-27 16:58:49 +02:00
fmc
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fpga fpga: bridge: fix obvious function documentation error 2018-09-30 08:49:55 -07:00
fsi fsi: sbefifo: Bump max command length 2018-08-08 15:44:47 +10:00
gnss
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gpio pci-v4.20-changes 2018-10-25 06:50:48 -07:00
gpu Second pull request for v4.19: 2018-10-20 12:26:26 +10:00
hid Merge branch 'for-4.20/multitouch' into for-linus 2018-10-23 13:36:28 +02:00
hsi
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hv Drivers: hv: vmbus: Use get/put_cpu() in vmbus_connect() 2018-09-30 08:49:55 -07:00
hwmon Lots of small changes to the IPMI driver. Most of the changes 2018-10-23 09:42:05 +01:00
hwspinlock hwspinlock: Fix incorrect return pointers 2018-07-30 20:54:51 -07:00
hwtracing intel_th: pci: Add Ice Lake PCH support 2018-09-18 16:08:38 +02:00
i2c This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
ide block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
iio - New Drivers 2018-10-25 06:19:15 -07:00
infiniband pci-v4.20-changes 2018-10-25 06:50:48 -07:00
input - New Drivers 2018-10-25 06:19:15 -07:00
iommu Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:05:28 +01:00
ipack
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irqchip irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint 2018-09-06 20:31:59 +02:00
isdn Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
leds leds: sc27xx: Add pattern_set/clear interfaces for LED controller 2018-10-11 21:59:11 +02:00
lightnvm lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
macintosh macintosh: therm_windtunnel: drop using attach_adapter 2018-08-24 14:42:42 +02:00
mailbox mailbox: PCC: handle parse error 2018-09-10 12:54:02 +02:00
mcb
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md block: Introduce blk_revalidate_disk_zones() 2018-10-25 11:17:40 -06:00
media media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 06:32:51 -04:00
memory memory: ti-aemif: fix a potential NULL-pointer dereference 2018-09-06 10:04:07 -07:00
memstick block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
message scsi: mptfusion: Remove unnecessary parentheses 2018-09-28 02:13:33 -04:00
mfd - New Drivers 2018-10-25 06:19:15 -07:00
misc Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-10-24 11:22:39 +01:00
mmc Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
mtd SPI NOR changes: 2018-10-23 01:09:22 +01:00
mux This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
net pci-v4.20-changes 2018-10-25 06:50:48 -07:00
nfc
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ntb
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nubus
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nvdimm libnvdimm for 4.20 2018-10-25 06:31:56 -07:00
nvme pci-v4.20-changes 2018-10-25 06:50:48 -07:00
nvmem
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of First batch of dma-mapping changes for 4.20: 2018-10-22 18:16:03 +01:00
opp PM / OPP: _of_add_opp_table_v2(): increment count only if OPP is added 2018-10-04 09:21:36 +05:30
oprofile
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parisc parisc: Add alternative coding infrastructure 2018-10-17 17:22:26 +02:00
parport Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pci pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-10-23 10:22:33 +01:00
perf arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
pinctrl This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
platform pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pnp
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power power: max8925: mark expected switch fall-through 2018-10-21 21:33:35 +02:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
pps
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ps3
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ptp ptp: ptp_dte: simplify getting .driver_data 2018-10-22 19:48:35 -07:00
pwm pwm: mediatek: Add MT7628 support 2018-08-20 11:36:07 +02:00
rapidio drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md 2018-08-22 10:52:51 -07:00
ras
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regulator regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
remoteproc remoteproc/davinci: use the reset framework 2018-08-16 17:39:55 -07:00
reset reset: imx7: Add PCIE_CTRL_APPS_TURNOFF 2018-10-05 09:56:19 +01:00
rpmsg rpmsg: Add compat ioctl for rpmsg char driver 2018-07-30 23:40:23 -07:00
rtc RTC for 4.19 2018-08-20 16:30:27 -07:00
s390 pci-v4.20-changes 2018-10-25 06:50:48 -07:00
sbus oradax: remove redundant null check before kfree 2018-10-07 22:42:00 -07:00
scsi block: Introduce blk_revalidate_disk_zones() 2018-10-25 11:17:40 -06:00
sfi
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sh sh: introduce a sh_cacheop_vaddr helper 2018-08-02 13:54:06 +02:00
siox
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slimbus
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sn
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soc net/kconfig: Make QCOM_QMI_HELPERS available when COMPILE_TEST 2018-10-24 08:11:35 +01:00
soundwire soundwire: Fix acquiring bus lock twice during master release 2018-08-27 09:49:48 +05:30
spi - New Drivers 2018-10-25 06:19:15 -07:00
spmi
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ssb ssb: chipcommon: fix fall-through annotation 2018-10-05 11:37:20 +03:00
staging Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
target SCSI misc on 20181024 2018-10-25 07:40:30 -07:00
tc
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tee ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
thermal x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
thunderbolt thunderbolt: Initialize after IOMMUs 2018-10-02 10:51:16 -07:00
tty - New Drivers 2018-10-25 06:19:15 -07:00
uio Char/Misc fix for 4.19-rc1 2018-08-19 09:30:44 -07:00
usb Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
uwb
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vfio powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
vhost net: vhost: remove bad code line 2018-10-07 21:31:32 -07:00
video - Old Drivers 2018-10-25 06:21:28 -07:00
virt
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virtio virtio, vhost: fixes, tweaks 2018-08-24 08:45:19 -07:00
visorbus
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vlynq
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vme
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w1 power supply and reset changes for the v4.19 series 2018-08-21 18:06:27 -07:00
watchdog include/linux/compiler*.h: make compiler-*.h mutually exclusive 2018-08-22 17:31:34 -07:00
xen Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:54:58 +01:00
zorro
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Kconfig
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Makefile Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00