bool has_write_zeroes:1;
bool use_linux_aio:1;
bool use_linux_io_uring:1;
- int64_t *offset; /* offset of zone append operation */
int page_cache_inconsistent; /* errno from fdatasync failure */
bool has_fallocate;
bool needs_alignment;
#ifdef CONFIG_LINUX_AIO
/* Currently Linux does AIO only for files opened with O_DIRECT */
- if (s->use_linux_aio) {
- if (!(s->open_flags & O_DIRECT)) {
- error_setg(errp, "aio=native was specified, but it requires "
- "cache.direct=on, which was not specified.");
- ret = -EINVAL;
- goto fail;
- }
- if (!aio_setup_linux_aio(bdrv_get_aio_context(bs), errp)) {
- error_prepend(errp, "Unable to use native AIO: ");
- goto fail;
- }
+ if (s->use_linux_aio && !(s->open_flags & O_DIRECT)) {
+ error_setg(errp, "aio=native was specified, but it requires "
+ "cache.direct=on, which was not specified.");
+ ret = -EINVAL;
+ goto fail;
}
#else
if (s->use_linux_aio) {
}
#endif /* !defined(CONFIG_LINUX_AIO) */
-#ifdef CONFIG_LINUX_IO_URING
- if (s->use_linux_io_uring) {
- if (!aio_setup_linux_io_uring(bdrv_get_aio_context(bs), errp)) {
- error_prepend(errp, "Unable to use io_uring: ");
- goto fail;
- }
- }
-#else
+#ifndef CONFIG_LINUX_IO_URING
if (s->use_linux_io_uring) {
error_setg(errp, "aio=io_uring was specified, but is not supported "
"in this build.");
* As part of reopen prepare we also want to create new fd by
* raw_reconfigure_getfd(). But it wants updated "perm", when in
* bdrv_reopen_multiple() .bdrv_reopen_prepare() callback called prior to
- * permission update. Happily, permission update is always a part (a seprate
- * stage) of bdrv_reopen_multiple() so we can rely on this fact and
- * reconfigure fd in raw_check_perm().
+ * permission update. Happily, permission update is always a part
+ * (a separate stage) of bdrv_reopen_multiple() so we can rely on this
+ * fact and reconfigure fd in raw_check_perm().
*/
s->reopen_state = state;
static int get_sysfs_str_val(struct stat *st, const char *attribute,
char **val) {
g_autofree char *sysfspath = NULL;
- int ret;
size_t len;
if (!S_ISBLK(st->st_mode)) {
sysfspath = g_strdup_printf("/sys/dev/block/%u:%u/queue/%s",
major(st->st_rdev), minor(st->st_rdev),
attribute);
- ret = g_file_get_contents(sysfspath, val, &len, NULL);
- if (ret == -1) {
+ if (!g_file_get_contents(sysfspath, val, &len, NULL)) {
return -ENOENT;
}
if (*(p + len - 1) == '\n') {
*(p + len - 1) = '\0';
}
- return ret;
+ return 0;
}
#endif
BlockZoneModel zoned;
int ret;
- bs->bl.zoned = BLK_Z_NONE;
-
ret = get_sysfs_zoned_model(st, &zoned);
if (ret < 0 || zoned == BLK_Z_NONE) {
- return;
+ goto no_zoned;
}
bs->bl.zoned = zoned;
if (ret < 0) {
error_setg_errno(errp, -ret, "Unable to read chunk_sectors "
"sysfs attribute");
- return;
+ goto no_zoned;
} else if (!ret) {
error_setg(errp, "Read 0 from chunk_sectors sysfs attribute");
- return;
+ goto no_zoned;
}
bs->bl.zone_size = ret << BDRV_SECTOR_BITS;
if (ret < 0) {
error_setg_errno(errp, -ret, "Unable to read nr_zones "
"sysfs attribute");
- return;
+ goto no_zoned;
} else if (!ret) {
error_setg(errp, "Read 0 from nr_zones sysfs attribute");
- return;
+ goto no_zoned;
}
bs->bl.nr_zones = ret;
ret = get_zones_wp(bs, s->fd, 0, bs->bl.nr_zones, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "report wps failed");
- bs->wps = NULL;
- return;
+ goto no_zoned;
}
qemu_co_mutex_init(&bs->wps->colock);
+ return;
+
+no_zoned:
+ bs->bl.zoned = BLK_Z_NONE;
+ g_free(bs->wps);
+ bs->wps = NULL;
}
#else /* !defined(CONFIG_BLKZONED) */
static void raw_refresh_zoned_limits(BlockDriverState *bs, struct stat *st,
return true;
}
-static int coroutine_fn raw_co_prw(BlockDriverState *bs, uint64_t offset,
+#ifdef CONFIG_LINUX_IO_URING
+static inline bool raw_check_linux_io_uring(BDRVRawState *s)
+{
+ Error *local_err = NULL;
+ AioContext *ctx;
+
+ if (!s->use_linux_io_uring) {
+ return false;
+ }
+
+ ctx = qemu_get_current_aio_context();
+ if (unlikely(!aio_setup_linux_io_uring(ctx, &local_err))) {
+ error_reportf_err(local_err, "Unable to use linux io_uring, "
+ "falling back to thread pool: ");
+ s->use_linux_io_uring = false;
+ return false;
+ }
+ return true;
+}
+#endif
+
+#ifdef CONFIG_LINUX_AIO
+static inline bool raw_check_linux_aio(BDRVRawState *s)
+{
+ Error *local_err = NULL;
+ AioContext *ctx;
+
+ if (!s->use_linux_aio) {
+ return false;
+ }
+
+ ctx = qemu_get_current_aio_context();
+ if (unlikely(!aio_setup_linux_aio(ctx, &local_err))) {
+ error_reportf_err(local_err, "Unable to use Linux AIO, "
+ "falling back to thread pool: ");
+ s->use_linux_aio = false;
+ return false;
+ }
+ return true;
+}
+#endif
+
+static int coroutine_fn raw_co_prw(BlockDriverState *bs, int64_t *offset_ptr,
uint64_t bytes, QEMUIOVector *qiov, int type)
{
BDRVRawState *s = bs->opaque;
RawPosixAIOData acb;
int ret;
+ uint64_t offset = *offset_ptr;
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];
}
if (s->needs_alignment && !bdrv_qiov_is_aligned(bs, qiov)) {
type |= QEMU_AIO_MISALIGNED;
#ifdef CONFIG_LINUX_IO_URING
- } else if (s->use_linux_io_uring) {
+ } else if (raw_check_linux_io_uring(s)) {
assert(qiov->size == bytes);
ret = luring_co_submit(bs, s->fd, offset, qiov, type);
goto out;
#endif
#ifdef CONFIG_LINUX_AIO
- } else if (s->use_linux_aio) {
+ } else if (raw_check_linux_aio(s)) {
assert(qiov->size == bytes);
ret = laio_co_submit(s->fd, offset, qiov, type,
s->aio_max_batch);
out:
#if defined(CONFIG_BLKZONED)
-{
- 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) {
+ BlockZoneWps *wps = bs->wps;
+ if (ret == 0) {
uint64_t *wp = &wps->wp[offset / bs->bl.zone_size];
if (!BDRV_ZT_IS_CONV(*wp)) {
if (type & QEMU_AIO_ZONE_APPEND) {
- *s->offset = *wp;
- trace_zbd_zone_append_complete(bs, *s->offset
+ *offset_ptr = *wp;
+ trace_zbd_zone_append_complete(bs, *offset_ptr
>> BDRV_SECTOR_BITS);
}
/* Advance the wp if needed */
*wp = offset + bytes;
}
}
+ } else {
+ /*
+ * write and append write are not allowed to cross zone boundaries
+ */
+ update_zones_wp(bs, s->fd, offset, 1);
}
- } else {
- if (type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) {
- update_zones_wp(bs, s->fd, 0, 1);
- }
- }
- if ((type & (QEMU_AIO_WRITE | QEMU_AIO_ZONE_APPEND)) && wps) {
qemu_co_mutex_unlock(&wps->colock);
}
-}
#endif
return ret;
}
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
- return raw_co_prw(bs, offset, bytes, qiov, QEMU_AIO_READ);
+ return raw_co_prw(bs, &offset, bytes, qiov, QEMU_AIO_READ);
}
static int coroutine_fn raw_co_pwritev(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
- return raw_co_prw(bs, offset, bytes, qiov, QEMU_AIO_WRITE);
+ return raw_co_prw(bs, &offset, bytes, qiov, QEMU_AIO_WRITE);
}
static int coroutine_fn raw_co_flush_to_disk(BlockDriverState *bs)
};
#ifdef CONFIG_LINUX_IO_URING
- if (s->use_linux_io_uring) {
+ if (raw_check_linux_io_uring(s)) {
return luring_co_submit(bs, s->fd, 0, NULL, QEMU_AIO_FLUSH);
}
#endif
return raw_thread_pool_submit(handle_aiocb_flush, &acb);
}
-static void raw_aio_attach_aio_context(BlockDriverState *bs,
- AioContext *new_context)
-{
- BDRVRawState __attribute__((unused)) *s = bs->opaque;
-#ifdef CONFIG_LINUX_AIO
- if (s->use_linux_aio) {
- Error *local_err = NULL;
- if (!aio_setup_linux_aio(new_context, &local_err)) {
- error_reportf_err(local_err, "Unable to use native AIO, "
- "falling back to thread pool: ");
- s->use_linux_aio = false;
- }
- }
-#endif
-#ifdef CONFIG_LINUX_IO_URING
- if (s->use_linux_io_uring) {
- Error *local_err = NULL;
- if (!aio_setup_linux_io_uring(new_context, &local_err)) {
- error_reportf_err(local_err, "Unable to use linux io_uring, "
- "falling back to thread pool: ");
- s->use_linux_io_uring = false;
- }
- }
-#endif
-}
-
static void raw_close(BlockDriverState *bs)
{
BDRVRawState *s = bs->opaque;
* of an array of zone descriptors.
* zones is an array of zone descriptors to hold zone information on reply;
* offset can be any byte within the entire size of the device;
- * nr_zones is the maxium number of sectors the command should operate on.
+ * nr_zones is the maximum number of sectors the command should operate on.
*/
#if defined(CONFIG_BLKZONED)
static int coroutine_fn raw_co_zone_report(BlockDriverState *bs, int64_t offset,
len >> BDRV_SECTOR_BITS);
ret = raw_thread_pool_submit(handle_aiocb_zone_mgmt, &acb);
if (ret != 0) {
- update_zones_wp(bs, s->fd, offset, i);
+ update_zones_wp(bs, s->fd, offset, nrz);
error_report("ioctl %s failed %d", op_name, ret);
return ret;
}
int64_t zone_size_mask = bs->bl.zone_size - 1;
int64_t iov_len = 0;
int64_t len = 0;
- BDRVRawState *s = bs->opaque;
- s->offset = offset;
if (*offset & zone_size_mask) {
error_report("sector offset %" PRId64 " is not aligned to zone size "
}
trace_zbd_zone_append(bs, *offset >> BDRV_SECTOR_BITS);
- return raw_co_prw(bs, *offset, len, qiov, QEMU_AIO_ZONE_APPEND);
+ return raw_co_prw(bs, offset, len, qiov, QEMU_AIO_ZONE_APPEND);
}
#endif
.bdrv_co_copy_range_from = raw_co_copy_range_from,
.bdrv_co_copy_range_to = raw_co_copy_range_to,
.bdrv_refresh_limits = raw_refresh_limits,
- .bdrv_attach_aio_context = raw_aio_attach_aio_context,
.bdrv_co_truncate = raw_co_truncate,
.bdrv_co_getlength = raw_co_getlength,
.bdrv_co_copy_range_from = raw_co_copy_range_from,
.bdrv_co_copy_range_to = raw_co_copy_range_to,
.bdrv_refresh_limits = raw_refresh_limits,
- .bdrv_attach_aio_context = raw_aio_attach_aio_context,
.bdrv_co_truncate = raw_co_truncate,
.bdrv_co_getlength = raw_co_getlength,
.bdrv_co_pwritev = raw_co_pwritev,
.bdrv_co_flush_to_disk = raw_co_flush_to_disk,
.bdrv_refresh_limits = cdrom_refresh_limits,
- .bdrv_attach_aio_context = raw_aio_attach_aio_context,
.bdrv_co_truncate = raw_co_truncate,
.bdrv_co_getlength = raw_co_getlength,
.bdrv_co_pwritev = raw_co_pwritev,
.bdrv_co_flush_to_disk = raw_co_flush_to_disk,
.bdrv_refresh_limits = cdrom_refresh_limits,
- .bdrv_attach_aio_context = raw_aio_attach_aio_context,
.bdrv_co_truncate = raw_co_truncate,
.bdrv_co_getlength = raw_co_getlength,
projects / mirror_qemu.git / blobdiff