cryptospore / rpms / qemu-kvm

Forked from rpms/qemu-kvm 2 years ago
Clone
218e99
From 0d32273cd7f5daa7431b5e2068537154dea101fb Mon Sep 17 00:00:00 2001
218e99
From: Max Reitz <mreitz@redhat.com>
218e99
Date: Mon, 4 Nov 2013 22:32:30 +0100
218e99
Subject: [PATCH 37/87] qcow2: Make overlap check mask variable
218e99
218e99
RH-Author: Max Reitz <mreitz@redhat.com>
218e99
Message-id: <1383604354-12743-40-git-send-email-mreitz@redhat.com>
218e99
Patchwork-id: 55339
218e99
O-Subject: [RHEL-7.0 qemu-kvm PATCH 39/43] qcow2: Make overlap check mask variable
218e99
Bugzilla: 1004347
218e99
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
218e99
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
218e99
RH-Acked-by: Fam Zheng <famz@redhat.com>
218e99
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
218e99
218e99
BZ: 1004347
218e99
218e99
Replace the QCOW2_OL_DEFAULT macro by a variable overlap_check in
218e99
BDRVQcowState.
218e99
218e99
Signed-off-by: Max Reitz <mreitz@redhat.com>
218e99
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
218e99
(cherry picked from commit 3e3553905cfc814d59de6d1a634c3a991b2a9257)
218e99
218e99
Signed-off-by: Max Reitz <mreitz@redhat.com>
218e99
---
218e99
 block/qcow2-refcount.c | 2 +-
218e99
 block/qcow2.c          | 2 ++
218e99
 block/qcow2.h          | 5 ++---
218e99
 3 files changed, 5 insertions(+), 4 deletions(-)
218e99
218e99
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
218e99
---
218e99
 block/qcow2-refcount.c |    2 +-
218e99
 block/qcow2.c          |    2 ++
218e99
 block/qcow2.h          |    5 ++---
218e99
 3 files changed, 5 insertions(+), 4 deletions(-)
218e99
218e99
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
218e99
index 91c446b..3787314 100644
218e99
--- a/block/qcow2-refcount.c
218e99
+++ b/block/qcow2-refcount.c
218e99
@@ -1629,7 +1629,7 @@ int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset,
218e99
                                  int64_t size)
218e99
 {
218e99
     BDRVQcowState *s = bs->opaque;
218e99
-    int chk = QCOW2_OL_DEFAULT & ~ign;
218e99
+    int chk = s->overlap_check & ~ign;
218e99
     int i, j;
218e99
 
218e99
     if (!size) {
218e99
diff --git a/block/qcow2.c b/block/qcow2.c
218e99
index ac5ed47..157361f 100644
218e99
--- a/block/qcow2.c
218e99
+++ b/block/qcow2.c
218e99
@@ -630,6 +630,8 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
218e99
     s->discard_passthrough[QCOW2_DISCARD_OTHER] =
218e99
         qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
218e99
 
218e99
+    s->overlap_check = QCOW2_OL_CACHED;
218e99
+
218e99
     qemu_opts_del(opts);
218e99
 
218e99
     if (s->use_lazy_refcounts && s->qcow_version < 3) {
218e99
diff --git a/block/qcow2.h b/block/qcow2.h
218e99
index 64ad43c..d1fd91b 100644
218e99
--- a/block/qcow2.h
218e99
+++ b/block/qcow2.h
218e99
@@ -202,6 +202,8 @@ typedef struct BDRVQcowState {
218e99
 
218e99
     bool discard_passthrough[QCOW2_DISCARD_MAX];
218e99
 
218e99
+    int overlap_check; /* bitmask of Qcow2MetadataOverlap values */
218e99
+
218e99
     uint64_t incompatible_features;
218e99
     uint64_t compatible_features;
218e99
     uint64_t autoclear_features;
218e99
@@ -320,9 +322,6 @@ typedef enum QCow2MetadataOverlap {
218e99
      QCOW2_OL_REFCOUNT_TABLE | QCOW2_OL_REFCOUNT_BLOCK | \
218e99
      QCOW2_OL_SNAPSHOT_TABLE | QCOW2_OL_INACTIVE_L1)
218e99
 
218e99
-/* The default checks to perform */
218e99
-#define QCOW2_OL_DEFAULT QCOW2_OL_CACHED
218e99
-
218e99
 #define L1E_OFFSET_MASK 0x00ffffffffffff00ULL
218e99
 #define L2E_OFFSET_MASK 0x00ffffffffffff00ULL
218e99
 #define L2E_COMPRESSED_OFFSET_SIZE_MASK 0x3fffffffffffffffULL
218e99
-- 
218e99
1.7.1
218e99