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Max Reitz ecf58777c5 block/qcow2: Simplify shared L2 handling in amend 
Currently, we have a bitmap for keeping track of which clusters have
been created during the zero cluster expansion process. This was
necessary because we need to properly increase the refcount for shared
L2 tables.

However, now we can simply take the L2 refcount and use it for the
cluster allocated for expansion. This will be the correct refcount and
therefore we don't have to remember that cluster having been allocated
any more.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Message-id: 1414404776-4919-7-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
 		2014-11-03 11:41:49 +00:00
..
Makefile.objs qemu-img: Implement commit like QMP 2014-11-03 11:41:48 +00:00
accounting.c block: Make the block accounting functions operate on BlockAcctStats 2014-09-10 10:41:29 +02:00
archipelago.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
backup.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
blkdebug.c qcow2: Optimize bdrv_make_empty() 2014-11-03 11:41:48 +00:00
blkverify.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
block-backend.c block: Make device model's references to BlockBackend strong 2014-10-20 14:03:51 +02:00
bochs.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
cloop.c cloop: Handle failure for potentially large allocations 2014-08-15 15:07:15 +02:00
commit.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
curl.c block/curl: Improve type safety of s->timeout. 2014-11-03 11:41:47 +00:00
dmg.c dmg: Handle failure for potentially large allocations 2014-08-15 15:07:15 +02:00
gluster.c block: don't convert file size to sector size 2014-09-12 15:43:06 +02:00
iscsi.c block/iscsi: check for oversized requests 2014-11-03 09:48:41 +00:00
linux-aio.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
mirror.c block/mirror: Improve progress report 2014-11-03 11:41:48 +00:00
nbd-client.c nbd: implement .bdrv_detach/attach_aio_context() 2014-06-04 09:56:11 +02:00
nbd-client.h nbd: implement .bdrv_detach/attach_aio_context() 2014-06-04 09:56:11 +02:00
nbd.c nbd: Fix filename generation 2014-10-20 13:41:26 +02:00
nfs.c block: round up file size to nearest sector 2014-09-12 15:43:06 +02:00
null.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
parallels.c block/parallels: fix access to not initialized memory in catalog_bitmap 2014-11-03 09:48:41 +00:00
qapi.c block: Lift device model API into BlockBackend 2014-10-20 14:03:50 +02:00
qcow.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
qcow2-cache.c qcow2: Use g_try_new0() for cache array 2014-08-20 11:51:28 +02:00
qcow2-cluster.c block/qcow2: Simplify shared L2 handling in amend 2014-11-03 11:41:49 +00:00
qcow2-refcount.c block/qcow2: Make get_refcount() global 2014-11-03 11:41:49 +00:00
qcow2-snapshot.c qcow2: Allow "full" discard 2014-11-03 11:41:47 +00:00
qcow2.c block/qcow2: Implement status CB for amend 2014-11-03 11:41:49 +00:00
qcow2.h block/qcow2: Make get_refcount() global 2014-11-03 11:41:49 +00:00
qed-check.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
quorum.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-aio.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-posix.c raw-posix: raw_co_get_block_status() return value 2014-11-03 11:41:47 +00:00
raw-win32.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw_bsd.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
rbd.c rbd: Add support for bdrv_invalidate_cache 2014-11-03 09:48:41 +00:00
sheepdog.c block: Rename BlockDriverAIOCB* to BlockAIOCB* 2014-10-20 13:41:27 +02:00
snapshot.c snapshot: add bdrv_drain_all() to bdrv_snapshot_delete() to avoid concurrency problem 2014-11-03 09:48:42 +00:00
ssh.c ssh: Don't crash if either host or path is not specified. 2014-10-03 10:30:33 +01:00
stream.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
vdi.c block/vdi: Use {DIV_,}ROUND_UP 2014-10-23 15:34:01 +02:00
vhdx-endian.c block: VHDX endian fixes 2014-08-15 15:07:14 +02:00
vhdx-log.c block: Drop some superfluous casts from void * 2014-08-20 11:51:28 +02:00
vhdx.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vhdx.h block: VHDX endian fixes 2014-08-15 15:07:14 +02:00
vmdk.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vpc.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vvfat.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
win32-aio.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00