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author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2019-04-22 17:58:33 +0300 |
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committer | Kevin Wolf <kwolf@redhat.com> | 2019-04-30 15:29:00 +0200 |
commit | 696e8cb292074c28ced30b4a11d51dc8b3087db4 (patch) | |
tree | b11e8212586943644a93a9087a4d11a633718688 /block/qed-table.c | |
parent | 4ed3e0c48620a7f426bcec405745c6f01f560a8e (diff) | |
download | qemu-696e8cb292074c28ced30b4a11d51dc8b3087db4.zip qemu-696e8cb292074c28ced30b4a11d51dc8b3087db4.tar.gz qemu-696e8cb292074c28ced30b4a11d51dc8b3087db4.tar.bz2 |
block/qed: use buffer-based io
Move to _co_ versions of io functions qed_read_table() and
qed_write_table(), as we use qemu_co_mutex_unlock()
anyway.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qed-table.c')
-rw-r--r-- | block/qed-table.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/block/qed-table.c b/block/qed-table.c index c497bd4..cf30edd 100644 --- a/block/qed-table.c +++ b/block/qed-table.c @@ -21,22 +21,22 @@ /* Called with table_lock held. */ static int qed_read_table(BDRVQEDState *s, uint64_t offset, QEDTable *table) { - QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF( - qiov, table->offsets, s->header.cluster_size * s->header.table_size); + unsigned int bytes = s->header.cluster_size * s->header.table_size; + int noffsets; int i, ret; trace_qed_read_table(s, offset, table); qemu_co_mutex_unlock(&s->table_lock); - ret = bdrv_preadv(s->bs->file, offset, &qiov); + ret = bdrv_co_pread(s->bs->file, offset, bytes, table->offsets, 0); qemu_co_mutex_lock(&s->table_lock); if (ret < 0) { goto out; } /* Byteswap offsets */ - noffsets = qiov.size / sizeof(uint64_t); + noffsets = bytes / sizeof(uint64_t); for (i = 0; i < noffsets; i++) { table->offsets[i] = le64_to_cpu(table->offsets[i]); } @@ -66,7 +66,6 @@ static int qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table, unsigned int sector_mask = BDRV_SECTOR_SIZE / sizeof(uint64_t) - 1; unsigned int start, end, i; QEDTable *new_table; - QEMUIOVector qiov; size_t len_bytes; int ret; @@ -79,7 +78,6 @@ static int qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table, len_bytes = (end - start) * sizeof(uint64_t); new_table = qemu_blockalign(s->bs, len_bytes); - qemu_iovec_init_buf(&qiov, new_table->offsets, len_bytes); /* Byteswap table */ for (i = start; i < end; i++) { @@ -91,7 +89,7 @@ static int qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table, offset += start * sizeof(uint64_t); qemu_co_mutex_unlock(&s->table_lock); - ret = bdrv_pwritev(s->bs->file, offset, &qiov); + ret = bdrv_co_pwrite(s->bs->file, offset, len_bytes, new_table->offsets, 0); qemu_co_mutex_lock(&s->table_lock); trace_qed_write_table_cb(s, table, flush, ret); if (ret < 0) { |