diff options
| -rw-r--r-- | block/qcow2-cache.c | 5 |
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 } |