Am 28.04.2020 um 22:28 hat Eric Blake geschrieben:
Based-on: <address@hidden>
[PATCH v7 00/10] block: Fix resize (extending) of short overlays
After reviewing Kevin's work, I questioned if we had a redundancy with
bdrv_has_zero_init_truncate. It turns out we do, and this is the result.
Patch 1 has been previously posted [1] and reviewed, the rest is new.
I did not address Neils' comment that modern gluster also always
0-initializes [2], as I am not set up to verify it (my changes to the
other drivers are semantic no-ops, so I don't feel as bad about
posting them with less rigourous testing).
[1] https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg08070.html
[2] https://lists.gnu.org/archive/html/qemu-devel/2020-02/msg04266.html
block/parallels.c: In function 'parallels_co_writev':
block/parallels.c:218:12: error: 'ret' may be used uninitialized in this
function [-Werror=maybe-uninitialized]
218 | if (ret < 0) {
| ^
block/parallels.c:169:9: note: 'ret' was declared here
169 | int ret;
| ^~~
cc1: all warnings being treated as errors