Eric Sunshine c794b4e0fd Teach block/vdi about "discarded" (no longer allocated) blocks ...

An entry in the VDI block map will hold an offset to the actual block if
the block is allocated, or one of two specially-interpreted values if
not allocated. Using VirtualBox terminology, value VDI_IMAGE_BLOCK_FREE
(0xffffffff) represents a never-allocated block (semantically arbitrary
content).  VDI_IMAGE_BLOCK_ZERO (0xfffffffe) represents a "discarded"
block (semantically zero-filled).  block/vdi knows only about
VDI_IMAGE_BLOCK_FREE.  Teach it about VDI_IMAGE_BLOCK_ZERO.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

2011-10-28 19:25:49 +02:00

..

blkdebug.c

block: drop redundant bdrv_flush implementation

2011-10-21 17:34:13 +02:00

blkverify.c

block: drop redundant bdrv_flush implementation

2011-10-21 17:34:13 +02:00

bochs.c

block: take lock around bdrv_read implementations

2011-10-21 17:34:14 +02:00

cloop.c

block: take lock around bdrv_read implementations

2011-10-21 17:34:14 +02:00

cow.c

block: change flush to co_flush

2011-10-21 17:34:14 +02:00

curl.c

block/curl: Don't finish AIOCBs too early

2011-09-21 15:16:04 +02:00

dmg.c

block: take lock around bdrv_read implementations

2011-10-21 17:34:14 +02:00

iscsi.c

iSCSI block driver

2011-10-28 19:25:48 +02:00

nbd.c

block: take lock around bdrv_write implementations

2011-10-21 17:34:14 +02:00

parallels.c

block: take lock around bdrv_read implementations

2011-10-21 17:34:14 +02:00

qcow2-cache.c

…

qcow2-cluster.c

qcow2: Fix bdrv_write_compressed error handling

2011-10-21 17:34:13 +02:00

qcow2-refcount.c

…

qcow2-snapshot.c

…

qcow2.c

block: change discard to co_discard

2011-10-21 17:34:14 +02:00

qcow2.h

qcow2: removed unused depends_on field

2011-09-12 15:17:17 +02:00

qcow.c

block: change flush to co_flush

2011-10-21 17:34:14 +02:00

qed-check.c

…

qed-cluster.c

…

qed-gencb.c

…

qed-l2-cache.c

…

qed-table.c

qed: fix use-after-free during l2 cache commit

2011-10-05 10:52:31 -05:00

qed.c

block: drop redundant bdrv_flush implementation

2011-10-21 17:34:13 +02:00

qed.h

…

raw-posix-aio.h

…

raw-posix.c

block: change discard to co_discard

2011-10-21 17:34:14 +02:00

raw-win32.c

block: change flush to co_flush

2011-10-21 17:34:14 +02:00

raw.c

block: add bdrv_co_discard and bdrv_aio_discard support

2011-10-21 17:34:13 +02:00

rbd.c

block: change flush to co_flush

2011-10-21 17:34:14 +02:00

sheepdog.c

sheepdog: add coroutine_fn markers

2011-10-21 17:34:12 +02:00

vdi.c

Teach block/vdi about "discarded" (no longer allocated) blocks

2011-10-28 19:25:49 +02:00

vmdk.c

block: change flush to co_flush

2011-10-21 17:34:14 +02:00

vpc.c

block: change flush to co_flush

2011-10-21 17:34:14 +02:00

vvfat.c

block: take lock around bdrv_write implementations

2011-10-21 17:34:14 +02:00