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file-posix: Check bs->bl.zoned for zone info

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Instead of checking bs->wps or bs->bl.zone_size for whether zone
information is present, check bs->bl.zoned.  That is the flag that
raw_refresh_zoned_limits() reliably sets to indicate zone support.  If
it is set to something other than BLK_Z_NONE, other values and objects
like bs->wps and bs->bl.zone_size must be non-null/zero and valid; if it
is not, we cannot rely on their validity.

Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20230824155345.109765-3-hreitz@redhat.com>
Reviewed-by: Sam Li <faithilikerun@gmail.com>
This commit is contained in:
Hanna Czenczek 2023-08-24 17:53:41 +02:00
parent 56d1a022a7
commit 4b5d80f3d0
1 changed files with 7 additions and 5 deletions
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12
block/file-posix.c
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@ -2455,9 +2455,10 @@ static int coroutine_fn raw_co_prw(BlockDriverState *bs, uint64_t offset,
if (fd_open(bs) < 0)
return -EIO;
#if defined(CONFIG_BLKZONED)
if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) && bs->wps) {
if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) &&
bs->bl.zoned != BLK_Z_NONE) {
qemu_co_mutex_lock(&bs->wps->colock);
if (type & QEMU_AIO_ZONE_APPEND && bs->bl.zone_size) {
if (type & QEMU_AIO_ZONE_APPEND) {
int index = offset / bs->bl.zone_size;
offset = bs->wps->wp[index];
}
@ -2508,8 +2509,8 @@ out:
{
BlockZoneWps *wps = bs->wps;
if (ret == 0) {
if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND))
&& wps && bs->bl.zone_size) {
if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) &&
bs->bl.zoned != BLK_Z_NONE) {
uint64_t *wp = &wps->wp[offset / bs->bl.zone_size];
if (!BDRV_ZT_IS_CONV(*wp)) {
if (type & QEMU_AIO_ZONE_APPEND) {
@ -2529,7 +2530,8 @@ out:
}
}
if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) && wps) {
if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) &&
bs->blk.zoned != BLK_Z_NONE) {
qemu_co_mutex_unlock(&wps->colock);
}
}