diff options
| author | Eric Farman <farman@linux.vnet.ibm.com> | 2017-01-20 17:25:27 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-01-27 18:07:31 +0100 |
| commit | c4c41a0a65d650b241dec9efedf4ee3f00a16a30 (patch) | |
| tree | 8af16ce3648be55df877faa4edc400f350973713 /block/file-posix.c | |
| parent | 482652502e98b1d570de0585f01dd55e35fdebfb (diff) | |
block: get max_transfer limit for char (scsi-generic) devices
We can get the maximum number of bytes for a single I/O transfer
from the BLKSECTGET ioctl, but we only perform this for block
devices. scsi-generic devices are represented as character devices,
and so do not issue this today. Update this, so that virtio-scsi
devices using the scsi-generic interface can return the same data.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Message-Id: <20170120162527.66075-4-farman@linux.vnet.ibm.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'block/file-posix.c')
| -rw-r--r-- | block/file-posix.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index 9f83725fc4..2134e0ef96 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -674,7 +674,7 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp) struct stat st; if (!fstat(s->fd, &st)) { - if (S_ISBLK(st.st_mode)) { + if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)) { int ret = hdev_get_max_transfer_length(bs, s->fd); if (ret > 0 && ret <= BDRV_REQUEST_MAX_BYTES) { bs->bl.max_transfer = pow2floor(ret); |