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root / block @ 077805fa

Name Size
Makefile.objs 795 Bytes
blkdebug.c 15.8 kB
blkverify.c 10 kB
bochs.c 7 kB
cloop.c 5.8 kB
commit.c 7.2 kB
cow.c 9.5 kB
curl.c 16.2 kB
dmg.c 8.7 kB
gluster.c 17 kB
iscsi.c 26.1 kB
linux-aio.c 5.5 kB
mirror.c 10 kB
nbd.c 16.3 kB
parallels.c 4.8 kB
qcow.c 27.2 kB
qcow2-cache.c 7.8 kB
qcow2-cluster.c 36.3 kB
qcow2-refcount.c 39.8 kB
qcow2-snapshot.c 18.6 kB
qcow2.c 50.5 kB
qcow2.h 11.4 kB
qed-check.c 6.5 kB
qed-cluster.c 5.1 kB
qed-gencb.c 688 Bytes
qed-l2-cache.c 5.9 kB
qed-table.c 8.4 kB
qed.c 45.9 kB
qed.h 10.8 kB
raw-aio.h 1.5 kB
raw-posix.c 45.5 kB
raw-win32.c 15.6 kB
raw.c 3.9 kB
rbd.c 24.6 kB
sheepdog.c 54.4 kB
stream.c 6.7 kB
vdi.c 24.3 kB
vmdk.c 48.6 kB
vpc.c 23 kB
vvfat.c 81.6 kB
win32-aio.c 6.1 kB

Latest revisions

# Date Author Comment
077805fa 12/19/2012 09:29 am Paolo Bonzini

janitor: do not rely on indirect inclusions of or from qemu-char.h

Various header files rely on qemu-char.h including qemu-config.h or
main-loop.h, but they really do not need qemu-char.h at all (particularly
interesting is the case of the block layer!). Clean this up, and also...
525877c9 12/19/2012 09:29 am Paolo Bonzini

build: move rules from Makefile to */Makefile.objs

Signed-off-by: Paolo Bonzini <>
1d3afd64 12/13/2012 04:37 pm Kevin Wolf

qcow2: Round QCowL2Meta.offset down to cluster boundary

The offset within the cluster is already present as n_start and this is
what the code uses. QCowL2Meta.offset is only needed at a cluster
granularity.

Signed-off-by: Kevin Wolf <>
593fb83c 12/13/2012 04:37 pm Kevin Wolf

qcow2: Introduce Qcow2COWRegion

This makes it easier to address the areas for which a COW must be
performed. As a nice side effect, the COW code in
qcow2_alloc_cluster_link_l2 becomes really trivial.

Signed-off-by: Kevin Wolf <>
cf5c1a23 12/13/2012 04:37 pm Kevin Wolf

qcow2: Allocate l2meta dynamically

As soon as delayed COW is introduced, the l2meta struct is needed even
after completion of the request, so it can't live on the stack.

Signed-off-by: Kevin Wolf <>
060bee89 12/13/2012 04:37 pm Kevin Wolf

qcow2: Drop l2meta.cluster_offset

There's no real reason to have an l2meta for normal requests that don't
allocate anything. Before we can get rid of it, we must return the host
cluster offset in a different way.

Signed-off-by: Kevin Wolf <>
f50f88b9 12/13/2012 04:37 pm Kevin Wolf

qcow2: Allocate l2meta only for cluster allocations

Even for writes to already allocated clusters, an l2meta is allocated,
though it stays effectively unused. After this patch, only allocating
requests still have one. Each l2meta now describes an in-flight request...
280d3735 12/13/2012 04:37 pm Kevin Wolf

qcow2: Enable dirty flag in qcow2_alloc_cluster_link_l2

This is closer to where the dirty flag is really needed, and it avoids
having checks for special cases related to cluster allocation directly
in the writev loop.

Signed-off-by: Kevin Wolf <>
4e95314e 12/13/2012 04:37 pm Kevin Wolf

qcow2: Execute run_dependent_requests() without lock

There's no reason for run_dependent_requests() to hold s->lock, and a
later patch will require that in fact the lock is not held.

Also, before this patch, run_dependent_requests() not only does what its...
226c3c26 12/13/2012 04:37 pm Kevin Wolf

qcow2: Factor out handle_dependencies()

Signed-off-by: Kevin Wolf <>

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