qcow2: Make overlap check mask variable

Replace the QCOW2_OL_DEFAULT macro by a variable overlap_check in
BDRVQcowState.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 988644a28197c098f503b17b02efee8ac429f732..1ff43d0906ca78c0b4c0074619a745e20d733f1a 100644 (file)
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -1649,7 +1649,7 @@ int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset,
                                  int64_t size)
 {
     BDRVQcowState *s = bs->opaque;
-    int chk = QCOW2_OL_DEFAULT & ~ign;
+    int chk = s->overlap_check & ~ign;
     int i, j;
 
     if (!size) {

diff --git a/block/qcow2.c b/block/qcow2.c
index c461471adee88df65512de89248aa5a5e52c64ed..46acca75f0c054d58e864a53c1a86222cf22c9c9 100644 (file)
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -631,6 +631,8 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
     s->discard_passthrough[QCOW2_DISCARD_OTHER] =
         qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
 
+    s->overlap_check = QCOW2_OL_CACHED;
+
     qemu_opts_del(opts);
 
     if (s->use_lazy_refcounts && s->qcow_version < 3) {

diff --git a/block/qcow2.h b/block/qcow2.h
index 8692011347fcbe444ddfd83b1166268221263b49..6c85bb939599eb1c3447de17dd53660b2d570f72 100644 (file)
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -203,6 +203,8 @@ typedef struct BDRVQcowState {
 
     bool discard_passthrough[QCOW2_DISCARD_MAX];
 
+    int overlap_check; /* bitmask of Qcow2MetadataOverlap values */
+
     uint64_t incompatible_features;
     uint64_t compatible_features;
     uint64_t autoclear_features;
@@ -321,9 +323,6 @@ typedef enum QCow2MetadataOverlap {
      QCOW2_OL_REFCOUNT_TABLE | QCOW2_OL_REFCOUNT_BLOCK | \
      QCOW2_OL_SNAPSHOT_TABLE | QCOW2_OL_INACTIVE_L1)
 
-/* The default checks to perform */
-#define QCOW2_OL_DEFAULT QCOW2_OL_CACHED
-
 #define L1E_OFFSET_MASK 0x00ffffffffffff00ULL
 #define L2E_OFFSET_MASK 0x00ffffffffffff00ULL
 #define L2E_COMPRESSED_OFFSET_SIZE_MASK 0x3fffffffffffffffULL