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authorEric Blake <eblake@redhat.com>2016-06-01 15:10:13 -0600
committerKevin Wolf <kwolf@redhat.com>2016-06-08 10:21:08 +0200
commitc1499a5e73ae81b597869263ed8ac87bdaafeff7 (patch)
tree7da43bbf382847893523d95eb6b1b74bdc952406 /block/io.c
parenta620f2ae1566a72aac289d40d72decbf95fc6de8 (diff)
block: Kill bdrv_co_write_zeroes()
Now that all drivers have been converted to a byte interface, we no longer need a sector interface. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/io.c')
-rw-r--r--block/io.c15
1 files changed, 2 insertions, 13 deletions
diff --git a/block/io.c b/block/io.c
index a426094a33..9dc265b34d 100644
--- a/block/io.c
+++ b/block/io.c
@@ -901,7 +901,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BlockDriverState *bs,
goto err;
}
- if ((drv->bdrv_co_write_zeroes || drv->bdrv_co_pwrite_zeroes) &&
+ if (drv->bdrv_co_pwrite_zeroes &&
buffer_is_zero(bounce_buffer, iov.iov_len)) {
ret = bdrv_co_do_pwrite_zeroes(bs,
cluster_sector_num * BDRV_SECTOR_SIZE,
@@ -1170,16 +1170,6 @@ static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
!(bs->supported_zero_flags & BDRV_REQ_FUA)) {
need_flush = true;
}
- } else if (drv->bdrv_co_write_zeroes) {
- assert(offset % BDRV_SECTOR_SIZE == 0);
- assert(count % BDRV_SECTOR_SIZE == 0);
- ret = drv->bdrv_co_write_zeroes(bs, offset >> BDRV_SECTOR_BITS,
- num >> BDRV_SECTOR_BITS,
- flags & bs->supported_zero_flags);
- if (ret != -ENOTSUP && (flags & BDRV_REQ_FUA) &&
- !(bs->supported_zero_flags & BDRV_REQ_FUA)) {
- need_flush = true;
- }
} else {
assert(!bs->supported_zero_flags);
}
@@ -1259,8 +1249,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs,
ret = notifier_with_return_list_notify(&bs->before_write_notifiers, req);
if (!ret && bs->detect_zeroes != BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF &&
- !(flags & BDRV_REQ_ZERO_WRITE) &&
- (drv->bdrv_co_pwrite_zeroes || drv->bdrv_co_write_zeroes) &&
+ !(flags & BDRV_REQ_ZERO_WRITE) && drv->bdrv_co_pwrite_zeroes &&
qemu_iovec_is_zero(qiov)) {
flags |= BDRV_REQ_ZERO_WRITE;
if (bs->detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP) {