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Dan Williams 6c55be8b96 raid5: fix unending write sequence ... <debug output from Joel's system> handling stripe 7629696, state=0x14 cnt=1, pd_idx=2 ops=0:0:0 check 5: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800ffcffcc0 written 0000000000000000 check 4: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800fdd4e360 written 0000000000000000 check 3: state 0x1 toread 0000000000000000 read 0000000000000000 write 0000000000000000 written 0000000000000000 check 2: state 0x1 toread 0000000000000000 read 0000000000000000 write 0000000000000000 written 0000000000000000 check 1: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800ff517e40 written 0000000000000000 check 0: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800fd4cae60 written 0000000000000000 locked=4 uptodate=2 to_read=0 to_write=4 failed=0 failed_num=0 for sector 7629696, rmw=0 rcw=0 </debug> These blocks were prepared to be written out, but were never handled in ops_run_biodrain(), so they remain locked forever. The operations flags are all clear which means handle_stripe() thinks nothing else needs to be done. This state suggests that the STRIPE_OP_PREXOR bit was sampled 'set' when it should not have been. This patch cleans up cases where the code looks at sh->ops.pending when it should be looking at the consistent stack-based snapshot of the operations flags. Report from Joel: Resync done. Patch fix this bug. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Joel Bertrand <joel.bertrand@systella.fr> Cc: <stable@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		17 years ago
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raid6test	…
.gitignore	…
Kconfig	dm: add uevent to core	18 years ago
Makefile	dm: add uevent to core	18 years ago
bitmap.c	Add UNPLUG traces to all appropriate places	17 years ago
dm-bio-list.h	dm: bio_list macro renaming	18 years ago
dm-bio-record.h	…
dm-crypt.c	[CRYPTO] users: Fix up scatterlist conversion errors	18 years ago
dm-delay.c	dm: bio_list macro renaming	18 years ago
dm-emc.c	dm mpath: emc fix an error message	18 years ago
dm-exception-store.c	dm: fix memory leak in dm_create_persistent() when starting metadata update thread fails	18 years ago
dm-hw-handler.c	dm: use kzalloc	18 years ago
dm-hw-handler.h	dm mpath: add retry pg init	18 years ago
dm-io.c	Drop 'size' argument from bio_endio and bi_end_io	18 years ago
dm-io.h	dm io: remove old interface	18 years ago
dm-ioctl.c	dm: export name and uuid	18 years ago
dm-linear.c	[PATCH] dm: map and endio symbolic return codes	18 years ago
dm-log.c	dm log: split suspend	18 years ago
dm-log.h	dm log: split suspend	18 years ago
dm-mpath-hp-sw.c	dm mpath: hp retry if not ready	18 years ago
dm-mpath-rdac.c	dm mpath: rdac fix init race	18 years ago
dm-mpath.c	dm mpath: send uevents	18 years ago
dm-mpath.h	…
dm-path-selector.c	dm: use kzalloc	18 years ago
dm-path-selector.h	…
dm-raid1.c	dm raid1: add mirror_set to struct mirror	18 years ago
dm-round-robin.c	dm: remove duplicate module name from error msgs	18 years ago
dm-snap.c	dm: use is_power_of_2	18 years ago
dm-snap.h	dm: use kmem_cache macro	18 years ago
dm-stripe.c	dm: use is_power_of_2	18 years ago
dm-table.c	Add UNPLUG traces to all appropriate places	17 years ago
dm-target.c	dm: use kzalloc	18 years ago
dm-uevent.c	dm: uevent generate events	18 years ago
dm-uevent.h	dm: uevent generate events	18 years ago
dm-zero.c	Drop 'size' argument from bio_endio and bi_end_io	18 years ago
dm.c	dm: uevent generate events	18 years ago
dm.h	block: convert blkdev_issue_flush() to use empty barriers	18 years ago
faulty.c	Drop 'size' argument from bio_endio and bi_end_io	18 years ago
kcopyd.c	kcopyd use mutex instead of semaphore	18 years ago
kcopyd.h	…
linear.c	Add UNPLUG traces to all appropriate places	17 years ago
md.c	Add UNPLUG traces to all appropriate places	17 years ago
mktables.c	…
multipath.c	Add UNPLUG traces to all appropriate places	17 years ago
raid0.c	Add UNPLUG traces to all appropriate places	17 years ago
raid1.c	Add UNPLUG traces to all appropriate places	17 years ago
raid5.c	raid5: fix unending write sequence	17 years ago
raid6.h	…
raid6algos.c	x86 merge fallout: uml	18 years ago
raid6altivec.uc	…
raid6int.uc	…
raid6mmx.c	x86 merge fallout: uml	18 years ago
raid6recov.c	…
raid6sse1.c	x86 merge fallout: uml	18 years ago
raid6sse2.c	x86 merge fallout: uml	18 years ago
raid6x86.h	x86 merge fallout: uml	18 years ago
raid10.c	Add UNPLUG traces to all appropriate places	17 years ago
unroll.pl	…