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[Qemu-devel] [RFC PATCH 0/3] qcow2: Save requests during cluster allocat
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [RFC PATCH 0/3] qcow2: Save requests during cluster allocation |
Date: |
Fri, 2 Mar 2012 19:48:48 +0100 |
When a write request spans both allocated and unallocated clusters, qcow2
splits the request in two parts. This is not necessary if we have sequential
writes: If the unallocated area can be allocated such that in the image file it
is adjacent to the already allocated part, a single request is enough.
Kevin Wolf (3):
qcow2: Factor out count_cow_clusters
qcow2: Add qcow2_alloc_clusters_at()
qcow2: Reduce number of I/O requests
block/qcow2-cluster.c | 274 +++++++++++++++++++++++++++++++++---------------
block/qcow2-refcount.c | 28 +++++
block/qcow2.h | 3 +
trace-events | 1 +
4 files changed, 222 insertions(+), 84 deletions(-)
--
1.7.6.5
- [Qemu-devel] [RFC PATCH 0/3] qcow2: Save requests during cluster allocation,
Kevin Wolf <=