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14b98fdaf3
qemu/block
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Charlie Shepherd 14b98fdaf3 COW: Speed up writes 
Process a whole sector's worth of COW bits by reading a sector, setting
the bits after skipping any already set bits, then writing it out again.
Make sure we only flush once before writing metadata, and only if we
need to write metadata.

Signed-off-by: Charlie Shepherd <charlie@ctshepherd.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-11-29 13:40:36 +01:00
..
backup.c block: introduce BDRV_REQ_MAY_UNMAP request flag 2013-11-28 10:30:51 +01:00
blkdebug.c blkdebug: Employ error parameter 2013-10-11 16:50:00 +02:00
blkverify.c blkverify: Employ error parameter 2013-10-11 16:50:00 +02:00
bochs.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
cloop.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
commit.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
cow.c COW: Speed up writes 2013-11-29 13:40:36 +01:00
curl.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
dmg.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
gluster.c block: introduce BlockDriver.bdrv_needs_filename to enable some drivers. 2013-09-25 16:21:28 +02:00
iscsi.c iscsi: add bdrv_co_write_zeroes 2013-11-28 10:30:52 +01:00
linux-aio.c aio: drop io_flush argument 2013-08-19 15:52:19 +02:00
Makefile.objs block: vhdx - log parsing, replay, and flush support 2013-11-07 13:58:58 +01:00
mirror.c block: per caller dirty bitmap 2013-11-29 13:40:33 +01:00
nbd.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
parallels.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
qapi.c qapi: Change BlockDirtyInfo to list 2013-11-29 13:40:36 +01:00
qcow2-cache.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2-cluster.c block: add flags to bdrv_*_write_zeroes 2013-11-28 10:30:51 +01:00
qcow2-refcount.c qcow2: Make overlap check mask variable 2013-10-11 16:50:00 +02:00
qcow2-snapshot.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2.c block: add flags to bdrv_*_write_zeroes 2013-11-28 10:30:51 +01:00
qcow2.h qcow2: Add more overlap check bitmask macros 2013-10-11 16:50:00 +02:00
qcow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qed-check.c qed: mark image clean after repair succeeds 2012-08-10 10:25:12 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
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 misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qed.c block: add flags to bdrv_*_write_zeroes 2013-11-28 10:30:51 +01:00
qed.h block: qed - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:15 +02:00
raw_bsd.c block/raw: copy BlockLimits on raw_open 2013-11-28 10:30:51 +01:00
raw-aio.h block: make discard asynchronous 2013-01-15 10:03:47 +01:00
raw-posix.c block: Print its file name if backing file opening failed 2013-11-14 13:09:06 +01:00
raw-win32.c block: Print its file name if backing file opening failed 2013-11-14 13:09:06 +01:00
rbd.c rbd: avoid qemu_rbd_snap_list() memory leaks 2013-09-25 16:22:00 +02:00
sheepdog.c sheepdog: implement .bdrv_get_allocated_file_size 2013-11-28 10:30:52 +01:00
snapshot.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
ssh.c bdrv: Use "Error" for creating images 2013-09-12 10:12:48 +02:00
stream.c block/stream: Don't stream unbacked devices 2013-11-28 11:39:31 +01:00
vdi.c block: vdi - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:05 +02:00
vhdx-endian.c block: vhdx - move more endian translations to vhdx-endian.c 2013-11-07 13:58:59 +01:00
vhdx-log.c block: vhdx - add log write support 2013-11-07 13:58:59 +01:00
vhdx.c block: vhdx - add .bdrv_create() support 2013-11-07 13:58:59 +01:00
vhdx.h block: vhdx - add .bdrv_create() support 2013-11-07 13:58:59 +01:00
vmdk.c block: add flags to bdrv_*_write_zeroes 2013-11-28 10:30:51 +01:00
vpc.c block/vpc: fix virtual size for images created with disk2vhd 2013-11-07 13:58:58 +01:00
vvfat.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
win32-aio.c win32-aio: drop win32_aio_flush_cb() 2013-08-22 22:05:04 +02:00