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ad3fee7900
linux/drivers/block
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Lars Ellenberg ad3fee7900 drbd: improve throttling decisions of background resynchronisation 
Background resynchronisation does some "side-stepping", or throttles
itself, if it detects application IO activity, and the current resync
rate estimate is above the configured "cmin-rate".

What was not detected: if there is no application IO,
because it blocks on activity log transactions.

Introduce a new atomic_t ap_actlog_cnt, tracking such blocked requests,
and count non-zero as application IO activity.
This counter is exposed at proc_details level 2 and above.

Also make sure to release the currently locked resync extent
if we side-step due to such voluntary throttling.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2014-07-10 18:35:13 +02:00
..
aoe mm: close PageTail race 2014-03-04 07:55:47 -08:00
drbd drbd: improve throttling decisions of background resynchronisation 2014-07-10 18:35:13 +02:00
mtip32xx mtip32xx: minor performance enhancements 2014-06-06 13:28:48 -06:00
paride block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
rsxx block: Convert bio_for_each_segment() to bvec_iter 2013-11-23 22:33:49 -08:00
xen-blkback xen-blkback: defer freeing blkif to avoid blocking xenwatch 2014-05-28 14:17:32 -04:00
zram zram: correct offset usage in zram_bio_discard 2014-06-04 16:54:13 -07:00
amiflop.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
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: return -ENOSPC rather than -ENOMEM on page allocation failure 2014-06-04 16:54:02 -07:00
cciss_cmd.h
cciss_scsi.c cciss: switch to ->show_info() 2013-04-09 14:13:19 -04:00
cciss_scsi.h
cciss.c cciss: Use pci_enable_msix_exact() instead of pci_enable_msix() 2014-04-21 19:02:08 -06:00
cciss.h
cpqarray.c cpqarray: fix info leak in ida_locked_ioctl() 2013-09-24 17:00:26 -07:00
cpqarray.h
cryptoloop.c move linux/loop.h to drivers/block 2013-06-29 12:46:45 +04:00
DAC960.c DAC960: remove sleep_on usage 2014-03-13 14:56:38 -06:00
DAC960.h
floppy.c Merge branch 'for-jens' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/linux-block into for-linus 2014-06-18 10:30:22 -07:00
hd.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
ida_cmd.h
ida_ioctl.h
Kconfig zram: promote zram from staging 2014-01-30 16:56:55 -08:00
loop.c Merge branch 'sched/urgent' into sched/core, to avoid conflicts 2014-05-07 13:15:46 +02:00
loop.h move linux/loop.h to drivers/block 2013-06-29 12:46:45 +04:00
Makefile zram: promote zram from staging 2014-01-30 16:56:55 -08:00
mg_disk.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
nbd.c nbd: zero from and len fields in NBD_CMD_DISCONNECT. 2014-06-06 16:08:18 -07:00
null_blk.c null_blk: fix softirq completions for queue_mode == 1 2014-06-16 11:40:25 -06:00
nvme-core.c Merge git://git.infradead.org/users/willy/linux-nvme 2014-06-15 15:58:03 -10:00
nvme-scsi.c NVMe: Fix START_STOP_UNIT Scsi->NVMe translation. 2014-06-13 13:11:00 -04:00
osdblk.c block: replace strict_strtoul() with kstrtoul() 2013-09-11 15:56:56 -07:00
pktcdvd.c block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
ps3disk.c block: Kill bio_segments()/bi_vcnt usage 2013-11-23 22:33:51 -08:00
ps3vram.c block: Convert bio_for_each_segment() to bvec_iter 2013-11-23 22:33:49 -08:00
rbd_types.h rbd: get rid of RBD_MAX_SEG_NAME_LEN 2012-12-17 08:37:29 -06:00
rbd.c rbd: handle parent_overlap on writes correctly 2014-06-23 12:55:37 +04:00
skd_main.c Merge branch 'for-3.16/core' into for-3.16/drivers 2014-05-28 09:50:26 -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: Fix off-by-one in generic_request(). 2013-02-14 11:49:01 -08:00
swim3.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
swim_asm.S
swim.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
sx8.c drivers/block/sx8.c: remove unnecessary pci_set_drvdata() 2014-01-21 20:16:56 -08:00
umem.c block: Convert drivers to immutable biovecs 2013-11-23 22:33:51 -08:00
umem.h
virtio_blk.c block: virtio-blk: support multi virt queues per virtio-blk device 2014-07-01 10:51:03 -06:00
xen-blkfront.c Merge branch 'stable/for-jens-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip into for-3.16/drivers 2014-05-28 12:37:04 -06:00
xsysace.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
z2ram.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00