Vladimir Sementsov-Ogievskiy ebf7bba090 qcow2: do not allocate extra memory ... There are no needs to allocate more than one cluster, as we set avail_out for deflate to one cluster. Zlib docs (http://www.zlib.net/manual.html) says: "deflate compresses as much data as possible, and stops when the input buffer becomes empty or the output buffer becomes full." So, deflate will not write more than avail_out to output buffer. If there is not enough space in output buffer for compressed data (it may be larger than input data) deflate just returns Z_OK. (if all data is compressed and written to output buffer deflate returns Z_STREAM_END). Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 1468515565-81313-1-git-send-email-vsementsov@virtuozzo.com Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>		2016-07-26 17:46:37 +02:00
..
accounting.c	block: Clean up includes	2016-01-20 13:36:23 +01:00
archipelago.c	coccinelle: Remove unnecessary variables for function return value	2016-06-20 16:38:13 +02:00
backup.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
blkdebug.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
blkreplay.c	blkreplay: Switch .bdrv_co_discard() to byte-based	2016-07-20 14:11:55 +01:00
blkverify.c	block: Convert bdrv_aio_writev() to BdrvChild	2016-07-05 16:46:26 +02:00
block-backend.c	block: Convert BB interface to byte-based discards	2016-07-20 14:11:55 +01:00
bochs.c	block: Convert bdrv_co_preadv/pwritev to BdrvChild	2016-07-05 16:46:27 +02:00
cloop.c	block: Convert bdrv_pread(v) to BdrvChild	2016-07-05 16:46:27 +02:00
commit.c	Improve block job rate limiting for small bandwidth values	2016-07-13 13:41:38 +02:00
crypto.c	QAPI patches for 2016-07-06	2016-07-06 11:38:09 +01:00
curl.c	block: always compile-check debug prints	2016-05-12 15:22:08 +02:00
dirty-bitmap.c	dirty-bitmap: operate with int64_t amount	2016-07-19 16:54:46 -04:00
dmg.c	block: Convert bdrv_pread(v) to BdrvChild	2016-07-05 16:46:27 +02:00
gluster.c	Pull request	2016-07-21 11:00:36 +01:00
io.c	block: Kill .bdrv_co_discard()	2016-07-20 14:24:25 +01:00
iscsi.c	iscsi: Switch .bdrv_co_discard() to byte-based	2016-07-20 14:24:25 +01:00
linux-aio.c	linux-aio: prevent submitting more than MAX_EVENTS	2016-07-18 15:10:52 +01:00
Makefile.objs	block: Move bdrv_commit() to block/commit.c	2016-07-05 16:46:27 +02:00
mirror.c	pc, pci, virtio: new features, cleanups, fixes	2016-07-21 20:12:37 +01:00
nbd-client.c	nbd: Convert to byte-based interface	2016-07-20 14:24:25 +01:00
nbd-client.h	nbd: Convert to byte-based interface	2016-07-20 14:24:25 +01:00
nbd.c	nbd: Convert to byte-based interface	2016-07-20 14:24:25 +01:00
nfs.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
null.c	block/null: Implement bdrv_refresh_filename()	2016-06-16 15:20:37 +02:00
parallels.c	block: Convert bdrv_pwrite_zeroes() to BdrvChild	2016-07-05 16:46:27 +02:00
qapi.c	qapi: Add new visit_complete() function	2016-07-06 10:52:04 +02:00
qcow2-cache.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
qcow2-cluster.c	qcow2: Fix qcow2_get_cluster_offset()	2016-07-13 13:41:38 +02:00
qcow2-refcount.c	block: Convert bdrv_discard() to byte-based	2016-07-20 14:11:55 +01:00
qcow2-snapshot.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
qcow2.c	qcow2: do not allocate extra memory	2016-07-26 17:46:37 +02:00
qcow2.h	qcow2: Implement .bdrv_co_pwritev()	2016-06-16 15:19:55 +02:00
qcow.c	qcow2: do not allocate extra memory	2016-07-26 17:46:37 +02:00
qed-check.c	qed: Use DIV_ROUND_UP	2016-06-07 18:19:24 +03:00
qed-cluster.c	block: Clean up includes	2016-01-20 13:36:23 +01:00
qed-gencb.c	block: Clean up includes	2016-01-20 13:36:23 +01:00
qed-l2-cache.c	block: Clean up includes	2016-01-20 13:36:23 +01:00
qed-table.c	block: Convert bdrv_aio_writev() to BdrvChild	2016-07-05 16:46:26 +02:00
qed.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
qed.h	util: move declarations out of qemu-common.h	2016-03-22 22:20:17 +01:00
quorum.c	block: Convert bdrv_aio_writev() to BdrvChild	2016-07-05 16:46:26 +02:00
raw_bsd.c	raw_bsd: Convert to byte-based interface	2016-07-20 14:24:25 +01:00
raw-posix.c	block: Convert .bdrv_aio_discard() to byte-based	2016-07-20 14:11:55 +01:00
raw-win32.c	raw-posix: Switch paio_submit() to byte-based	2016-07-20 14:11:55 +01:00
rbd.c	block: Convert .bdrv_aio_discard() to byte-based	2016-07-20 14:11:55 +01:00
sheepdog.c	sheepdog: Switch .bdrv_co_discard() to byte-based	2016-07-20 14:24:25 +01:00
snapshot.c	error: Remove NULL checks on error_propagate() calls	2016-06-20 16:38:13 +02:00
ssh.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
stream.c	Improve block job rate limiting for small bandwidth values	2016-07-13 13:41:38 +02:00
throttle-groups.c	block: Move I/O throttling configuration functions to BlockBackend	2016-05-19 16:45:30 +02:00
trace-events	raw-posix: Switch paio_submit() to byte-based	2016-07-20 14:11:55 +01:00
vdi.c	block: Convert bdrv_co_preadv/pwritev to BdrvChild	2016-07-05 16:46:27 +02:00
vhdx-endian.c	qemu-common: stop including qemu/bswap.h from qemu-common.h	2016-05-19 16:42:28 +02:00
vhdx-log.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
vhdx.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
vhdx.h	block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec	2014-12-12 15:42:22 +00:00
vmdk.c	vmdk: fix metadata write regression	2016-07-13 13:41:39 +02:00
vpc.c	block: Convert bdrv_co_preadv/pwritev to BdrvChild	2016-07-05 16:46:27 +02:00
vvfat.c	vvfat: Fix qcow write target driver specification	2016-07-13 13:41:39 +02:00
win32-aio.c	linux-aio: share one LinuxAioState within an AioContext	2016-07-18 15:09:31 +01:00
write-threshold.c	block: Clean up includes	2016-01-20 13:36:23 +01:00