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Use plain 64-bit types. Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- include/block/block_int-common.h | 3 +-- block/io.c | 10 +++++++++- block/qapi.c | 2 +- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/include/block/block_int-common.h b/include/block/block_int-com= mon.h index 6d0898e53d..9324af903d 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -30,7 +30,6 @@ #include "qemu/aiocb.h" #include "qemu/iov.h" #include "qemu/rcu.h" -#include "qemu/stats64.h" =20 #define BLOCK_FLAG_LAZY_REFCOUNTS 8 =20 @@ -1246,7 +1245,7 @@ struct BlockDriverState { QLIST_HEAD(, BdrvDirtyBitmap) dirty_bitmaps; =20 /* Offset after the highest byte written to */ - Stat64 wr_highest_offset; + uint64_t wr_highest_offset; =20 /* * If true, copy read backing sectors into image. Can be >1 if more diff --git a/block/io.c b/block/io.c index cace297f22..e8fb4ede4d 100644 --- a/block/io.c +++ b/block/io.c @@ -39,6 +39,7 @@ #include "qemu/main-loop.h" #include "system/replay.h" #include "qemu/units.h" +#include "qemu/atomic.h" =20 /* Maximum bounce buffer for copy-on-read and write zeroes, in bytes */ #define MAX_BOUNCE_BUFFER (32768 << BDRV_SECTOR_BITS) @@ -2044,7 +2045,14 @@ bdrv_co_write_req_finish(BdrvChild *child, int64_t o= ffset, int64_t bytes, if (req->bytes) { switch (req->type) { case BDRV_TRACKED_WRITE: - stat64_max(&bs->wr_highest_offset, offset + bytes); + { + uint64_t new =3D offset + bytes; + uint64_t old =3D qatomic_read(&bs->wr_highest_offset); + + while (old < new) { + old =3D qatomic_cmpxchg(&bs->wr_highest_offset, old, n= ew); + } + } /* fall through, to set dirty bits */ case BDRV_TRACKED_DISCARD: bdrv_set_dirty(bs, offset, bytes); diff --git a/block/qapi.c b/block/qapi.c index 9f5771e019..27e0ac6a32 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -651,7 +651,7 @@ bdrv_query_bds_stats(BlockDriverState *bs, bool blk_lev= el) s->node_name =3D g_strdup(bdrv_get_node_name(bs)); } =20 - s->stats->wr_highest_offset =3D stat64_get(&bs->wr_highest_offset); + s->stats->wr_highest_offset =3D qatomic_read(&bs->wr_highest_offset); =20 s->driver_specific =3D bdrv_get_specific_stats(bs); =20 --=20 2.43.0