aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--block/qcow2-cache.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index 6eaefeddc4..ab8ee2d330 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -66,7 +66,8 @@ static inline int qcow2_cache_get_table_idx(BlockDriverState *bs,
static void qcow2_cache_table_release(BlockDriverState *bs, Qcow2Cache *c,
int i, int num_tables)
{
-#if QEMU_MADV_DONTNEED != QEMU_MADV_INVALID
+/* Using MADV_DONTNEED to discard memory is a Linux-specific feature */
+#ifdef CONFIG_LINUX
BDRVQcow2State *s = bs->opaque;
void *t = qcow2_cache_get_table_addr(bs, c, i);
int align = getpagesize();
@@ -74,7 +75,7 @@ static void qcow2_cache_table_release(BlockDriverState *bs, Qcow2Cache *c,
size_t offset = QEMU_ALIGN_UP((uintptr_t) t, align) - (uintptr_t) t;
size_t length = QEMU_ALIGN_DOWN(mem_size - offset, align);
if (length > 0) {
- qemu_madvise((uint8_t *) t + offset, length, QEMU_MADV_DONTNEED);
+ madvise((uint8_t *) t + offset, length, MADV_DONTNEED);
}
#endif
}