Mikulas Patocka 515ad66cc4 dm snapshot: rework writing to origin ... To track the completion of exceptions relating to the same location on the device, the current code selects one exception as primary_pe, links the other exceptions to it and uses reference counting to wait until all the reallocations are complete. It is considered too complicated to extend this code to handle the new snapshot-merge target, where sets of non-overlapping chunks would also need to become linked. Instead, a simpler (but less efficient) approach is taken. Bios are linked to one exception. When it completes, bios are simply retried, and if other related exceptions are still outstanding, they'll get queued again to wait for another one. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>		2009-12-10 23:52:30 +00:00
..
raid6test	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
.gitignore
bitmap.c	md: remove clumsy usage of do_sync_mapping_range from bitmap code	2009-10-16 15:56:01 +11:00
bitmap.h	md: move headers out of include/linux/raid/	2009-03-31 14:27:03 +11:00
dm-bio-record.h	dm: preserve bi_io_vec when resubmitting bios	2009-04-02 19:55:23 +01:00
dm-crypt.c	dm crypt: add plain64 iv	2009-12-10 23:52:25 +00:00
dm-delay.c	dm table: pass correct dev area size to device_area_is_valid	2009-07-23 20:30:42 +01:00
dm-exception-store.c	dm snapshot: move cow ref from exception store to snap core	2009-12-10 23:52:12 +00:00
dm-exception-store.h	dm exception store: add merge specific methods	2009-12-10 23:52:29 +00:00
dm-io.c	dm io: handle empty barriers	2009-12-10 23:52:22 +00:00
dm-ioctl.c	dm: rename dm_suspended to dm_suspended_md	2009-12-10 23:52:26 +00:00
dm-kcopyd.c	dm kcopyd: accept zero size jobs	2009-12-10 23:52:13 +00:00
dm-linear.c	dm table: pass correct dev area size to device_area_is_valid	2009-07-23 20:30:42 +01:00
dm-log-userspace-base.c	dm log: userspace fix incorrect luid cast in userspace_ctr	2009-10-16 23:18:15 +01:00
dm-log-userspace-transfer.c	dm/connector: Only process connector packages from privileged processes	2009-10-02 10:54:10 -07:00
dm-log-userspace-transfer.h	dm log: userspace add luid to distinguish between concurrent log instances	2009-09-04 20:40:34 +01:00
dm-log.c	dm raid1: report flush errors separately in status	2009-12-10 23:52:02 +00:00
dm-mpath.c	dm mpath: reject messages when device is suspended	2009-12-10 23:52:27 +00:00
dm-mpath.h	dm mpath: remove is_active from struct dm_path	2008-10-10 13:36:58 +01:00
dm-path-selector.c	dm: path selector use module refcount directly	2009-04-02 19:55:27 +01:00
dm-path-selector.h	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-queue-length.c	dm mpath: add queue length load balancer	2009-06-22 10:12:27 +01:00
dm-raid1.c	dm raid1: explicitly initialise bio_lists	2009-12-10 23:52:06 +00:00
dm-region-hash.c	dm raid1: remove bio_endio from dm_rh_mark_nosync	2009-12-10 23:52:05 +00:00
dm-round-robin.c	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-service-time.c	dm mpath: add service time load balancer	2009-06-22 10:12:28 +01:00
dm-snap-persistent.c	dm exception store: add merge specific methods	2009-12-10 23:52:29 +00:00
dm-snap-transient.c	dm snapshot: move cow ref from exception store to snap core	2009-12-10 23:52:12 +00:00
dm-snap.c	dm snapshot: rework writing to origin	2009-12-10 23:52:30 +00:00
dm-stripe.c	block: Optimal I/O limit wrapper	2009-09-14 08:24:52 +02:00
dm-sysfs.c	dm: rename dm_suspended to dm_suspended_md	2009-12-10 23:52:26 +00:00
dm-table.c	dm: bind new table before destroying old	2009-12-10 23:52:23 +00:00
dm-target.c	dm target: remove struct tt_internal	2009-04-02 19:55:28 +01:00
dm-uevent.c	dm: avoid _hash_lock deadlock	2009-12-10 23:51:52 +00:00
dm-uevent.h
dm-zero.c	dm: consolidate target deregistration error handling	2009-01-06 03:04:58 +00:00
dm.c	dm: export suspended state to targets	2009-12-10 23:52:27 +00:00
dm.h	dm: rename dm_suspended to dm_suspended_md	2009-12-10 23:52:26 +00:00
faulty.c	md: Move check for bitmap presence to personality code.	2009-06-18 08:49:23 +10:00
Kconfig	Merge branch 'dmaengine' into async-tx-next	2009-09-08 17:55:21 -07:00
linear.c	md: report device as congested when suspended	2009-09-23 18:10:29 +10:00
linear.h	md/linear: use call_rcu to free obsolete 'conf' structures.	2009-06-18 08:49:42 +10:00
Makefile	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
md.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6	2009-12-08 07:38:50 -08:00
md.h	md: report device as congested when suspended	2009-09-23 18:10:29 +10:00
mktables.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
multipath.c	md: remove unnecessary memset from multipath.	2009-09-23 18:16:31 +10:00
multipath.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid0.c	md: report device as congested when suspended	2009-09-23 18:10:29 +10:00
raid0.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid1.c	md: revert incorrect fix for read error handling in raid1.	2009-12-01 17:30:59 +11:00
raid1.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid5.c	md/raid5: Allow dirty-degraded arrays to be assembled when only party is degraded.	2009-11-13 17:47:00 +11:00
raid5.h	md: fix problems with RAID6 calculations for DDF.	2009-10-16 16:27:34 +11:00
raid6algos.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6altivec.uc	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
raid6int.uc	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
raid6mmx.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6recov.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6sse1.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6sse2.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6x86.h	md: fix typo in FSF address	2009-03-31 14:57:37 +11:00
raid10.c	md: raid1/raid10: handle allocation errors during array setup.	2009-10-16 15:55:44 +11:00
raid10.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
unroll.awk	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00