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3b0beafc92
linux/drivers/block
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Yehuda Sadeh 1fec70932d rbd: fix split bio handling 
The rbd driver currently splits bios when they span an object boundary.
However, the blk_end_request expects the completions to roll up the results
in block device order, and the split rbd/ceph ops can complete in any
order.  This patch adds a struct rbd_req_coll to track completion of split
requests and ensures that the results are passed back up to the block layer
in order.

This fixes errors where the file system gets completion of a read operation
that spans an object boundary before the data has actually arrived.  The
bug is easily reproduced with iozone with a working set larger than
available RAM.

Reported-by: Fyodor Ustinov <ufm@ufm.su>
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2011-05-13 13:52:57 -07:00
..
aoe drivers/block/aoe/Makefile: replace the use of <module>-objs with <module>-y 2011-01-19 08:25:02 -07:00
drbd Fix common misspellings 2011-03-31 11:26:23 -03:00
paride paride: Convert to bdops->check_events() 2011-03-09 19:54:28 +01:00
amiflop.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ataflop.c floppy,{ami|ata}flop: Convert to bdops->check_events() 2011-03-09 19:54:27 +01:00
brd.c Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
cciss_cmd.h cciss: Inform controller we are using 32-bit tags. 2011-03-12 10:02:16 +01:00
cciss_scsi.c Revert "cciss: Add missing allocation in scsi_cmd_stack_setup and corresponding deallocation" 2011-03-12 13:47:51 +01:00
cciss_scsi.h cciss: remove C99-style comments 2010-02-22 13:44:45 +01:00
cciss.c cciss: fix missed command status value CMD_UNABORTABLE 2011-03-12 10:02:30 +01:00
cciss.h cciss: fix lost command issue 2011-03-23 20:47:11 +01:00
cpqarray.c block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
cpqarray.h
cryptoloop.c drivers: Remove unnecessary inclusions of asm/semaphore.h 2008-04-18 22:16:32 -04:00
DAC960.c Fix common misspellings 2011-03-31 11:26:23 -03:00
DAC960.h Fix DAC960 driver on machines which don't support 64-bit DMA 2007-09-11 17:21:19 -07:00
floppy.c Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core 2011-03-10 08:58:35 +01:00
hd.c Fix common misspellings 2011-03-31 11:26:23 -03:00
ida_cmd.h
ida_ioctl.h
Kconfig xen: separate out frontend xenbus 2011-01-05 16:29:17 -05:00
loop.c Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core 2011-03-10 08:58:35 +01:00
Makefile drivers/block/Makefile: replace the use of <module>-objs with <module>-y 2011-01-19 08:25:02 -07:00
mg_disk.c block: switch s390 tape_block and mg_disk to elevator_change() 2010-08-23 14:02:44 +02:00
nbd.c nbd: remove module-level ioctl mutex 2011-02-11 16:12:20 -08:00
osdblk.c block: remove spurious uses of REQ_HARDBARRIER 2010-09-10 12:35:36 +02:00
pktcdvd.c Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core 2011-03-10 08:58:35 +01:00
ps3disk.c Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
ps3vram.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
rbd_types.h rbd: introduce rados block device (rbd), based on libceph 2010-10-20 15:38:13 -07:00
rbd.c rbd: fix split bio handling 2011-05-13 13:52:57 -07:00
smart1,2.h fix typos 'comamnd' -> 'command' in comments 2011-02-02 11:31:21 +01:00
sunvdc.c block: Consolidate phys_segment and hw_segment limits 2010-02-26 13:58:08 +01:00
swim3.c swim[3]: Convert to bdops->check_events() 2011-03-09 19:54:28 +01:00
swim_asm.S m68k: mac - Add SWIM floppy support 2009-03-26 21:15:27 +01:00
swim.c swim[3]: Convert to bdops->check_events() 2011-03-09 19:54:28 +01:00
sx8.c block: Consolidate phys_segment and hw_segment limits 2010-02-26 13:58:08 +01:00
ub.c ub: Convert to bdops->check_events() 2011-03-09 19:54:28 +01:00
umem.c Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core 2011-03-10 08:58:35 +01:00
umem.h drivers/block/umem: trim trailing whitespace 2007-10-10 09:25:59 +02:00
viodasd.c Fix common misspellings 2011-03-31 11:26:23 -03:00
virtio_blk.c Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
xd.c block: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:10 +02:00
xd.h [PATCH] switch xd 2008-10-21 07:48:11 -04:00
xen-blkfront.c Merge branch 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm 2011-03-15 10:59:09 -07:00
xsysace.c Fix common misspellings 2011-03-31 11:26:23 -03:00
z2ram.c drivers/block/z2ram.c: correct printing of sector_t 2010-10-28 06:15:26 -06:00