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11659569f7
linux/drivers/block
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Bob Liu 11659569f7 xen/blkfront: split per device io_lock 
After patch "xen/blkfront: separate per ring information out of device
info", per-ring data is protected by a per-device lock ('io_lock').

This is not a good way and will effect the scalability, so introduce a
per-ring lock ('ring_lock').

The old 'io_lock' is renamed to 'dev_lock' which protects the ->grants list and
->persistent_gnts_c which are shared by all rings.

Note that in 'blkfront_probe' the 'blkfront_info' is setup via kzalloc
so setting ->persistent_gnts_c to zero is not needed.

Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2016-01-04 12:21:01 -05:00
..
aoe Revert "block: remove artifical max_hw_sectors cap" 2015-08-18 13:21:13 -07:00
drbd drbd: fix error path during resize 2015-11-25 09:22:03 -07:00
mtip32xx mtip32xx: use formatting capability of kthread_create_on_node 2015-11-20 08:46:50 -07:00
paride mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM 2015-11-06 17:50:42 -08:00
rsxx block: change ->make_request_fn() and users to return a queue cookie 2015-11-07 10:40:46 -07:00
xen-blkback xen/xenbus: Rename *RING_PAGE* to *RING_GRANT* 2015-10-23 14:20:46 +01:00
zram Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block 2015-11-10 17:23:49 -08:00
amiflop.c block: drop owner assignment from platform_drivers 2014-10-20 16:20:18 +02:00
ataflop.c Merge branch 'for-3.16/core' of git://git.kernel.dk/linux-block into next 2014-06-02 09:29:34 -07:00
brd.c brd: Refuse improperly aligned discard requests 2015-11-11 09:36:56 -07:00
cciss_cmd.h
cciss_scsi.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
cciss_scsi.h
cciss.c cciss: correct the non-resettable board list 2015-05-31 11:14:34 -07:00
cciss.h
cpqarray.c genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely 2015-03-05 20:53:06 +01:00
cpqarray.h
cryptoloop.c move linux/loop.h to drivers/block 2013-06-29 12:46:45 +04:00
DAC960.c block: use pci_zalloc_consistent 2014-08-08 15:57:28 -07:00
DAC960.h
floppy.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
hd.c block: hd: remove deprecated IRQF_DISABLED 2014-10-01 08:16:07 -06:00
ida_cmd.h
ida_ioctl.h
Kconfig nvme: move to a new drivers/nvme/host directory 2015-10-09 10:40:37 -06:00
loop.c Merge branch 'for-4.4/core' into for-4.4/drivers 2015-10-09 10:40:29 -06:00
loop.h block: loop: support DIO & AIO 2015-09-23 11:01:16 -06:00
Makefile nvme: move to a new drivers/nvme/host directory 2015-10-09 10:40:37 -06:00
mg_disk.c block: drop owner assignment from platform_drivers 2014-10-20 16:20:18 +02:00
nbd.c signal: turn dequeue_signal_lock() into kernel_dequeue_signal() 2015-11-06 17:50:42 -08:00
null_blk.c null_blk: do not del gendisk with lightnvm 2015-11-19 15:15:56 -07:00
osdblk.c mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd 2015-11-06 17:50:42 -08:00
pktcdvd.c Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block 2015-11-10 17:23:49 -08:00
ps3disk.c block: Kill bio_segments()/bi_vcnt usage 2013-11-23 22:33:51 -08:00
ps3vram.c block: change ->make_request_fn() and users to return a queue cookie 2015-11-07 10:40:46 -07:00
rbd_types.h
rbd.c rbd: remove duplicate calls to rbd_dev_mapping_clear() 2015-11-02 23:36:48 +01:00
skd_main.c block: have drivers use blk_queue_max_discard_sectors() 2015-07-17 08:41:53 -06:00
skd_s1120.h skd: fix formatting in skd_s1120.h 2013-11-08 09:10:30 -07:00
smart1,2.h
sunvdc.c sunvdc: reconnect ldc after vds service domain restarts 2014-12-11 18:52:45 -08:00
swim3.c powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
swim_asm.S
swim.c block: drop owner assignment from platform_drivers 2014-10-20 16:20:18 +02:00
sx8.c sx8: use real time for the command seconds 2015-12-23 08:42:59 -07:00
umem.c block: change ->make_request_fn() and users to return a queue cookie 2015-11-07 10:40:46 -07:00
umem.h
virtio_blk.c blk-mq: fix racy updates of rq->errors 2015-10-01 10:10:55 +02:00
xen-blkfront.c xen/blkfront: split per device io_lock 2016-01-04 12:21:01 -05:00
xsysace.c block: systemace: Remove .owner field for driver 2014-08-21 20:37:54 -05:00
z2ram.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00