Max Reitz 94054183da qcow2: Optimize bdrv_make_empty() ... bdrv_make_empty() is currently only called if the current image represents an external snapshot that has been committed to its base image; it is therefore unlikely to have internal snapshots. In this case, bdrv_make_empty() can be greatly sped up by emptying the L1 and refcount table (while having the dirty flag set, which only works for compat=1.1) and creating a trivial refcount structure. If there are snapshots or for compat=0.10, fall back to the simple implementation (discard all clusters). [Applied s/clusters/cluster/ typo fix suggested by Eric Blake --Stefan] Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1414159063-25977-4-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2014-11-03 11:41:48 +00:00
..
accounting.h	block: Make the block accounting functions operate on BlockAcctStats	2014-09-10 10:41:29 +02:00
aio.h	block: Rename BlockDriverCompletionFunc to BlockCompletionFunc	2014-10-20 13:41:27 +02:00
block.h	qcow2: Optimize bdrv_make_empty()	2014-11-03 11:41:48 +00:00
block_int.h	BlockLimits: introduce max_transfer_length	2014-11-03 09:48:41 +00:00
blockjob.h	block: Rename BlockDriverCompletionFunc to BlockCompletionFunc	2014-10-20 13:41:27 +02:00
coroutine.h	coroutine: Drop co_sleep_ns	2014-08-29 10:46:58 +01:00
coroutine_int.h	coroutine: stop using AioContext in CoQueue	2013-05-24 16:17:56 +02:00
nbd.h	nbd: Handle NBD_OPT_LIST option.	2014-06-30 12:50:17 +02:00
qapi.h	block/qapi: Convert qmp_query_block() to BlockBackend	2014-10-20 14:03:50 +02:00
scsi.h	scsi: Print command name in debug	2014-06-18 08:47:10 +02:00
snapshot.h	qemu-nbd: support internal snapshot export	2013-12-04 15:19:00 +01:00
thread-pool.h	block: Rename BlockDriverCompletionFunc to BlockCompletionFunc	2014-10-20 13:41:27 +02:00