On Thu, 2013-04-25 at 15:04 -0700, Andy Grover wrote:
> if the fileio backing file is actually a block device, fd_dev_size will
> be 0. Ensure we return the correct value by calling fd_get_blocks() and
> multiplying by block size.
>
> Move fd_get_blocks in source file, so fd_show_configfs_dev_params can
> call it.
>
> Signed-off-by: Andy Grover <agrover@xxxxxxxxxx>
> ---
Given that /info is intended to provide backend driver specific
information needed for re-configuration after target restart, I don't
see the point of providing this output when it's not actually required
for FILEIO backend driver setup w/ struct block_device.
So unless there's a reason, please don't change /info output.
--nab
> drivers/target/target_core_file.c | 29 ++++++++++++++++-------------
> 1 files changed, 16 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
> index 58ed683..2330dc4 100644
> --- a/drivers/target/target_core_file.c
> +++ b/drivers/target/target_core_file.c
> @@ -674,19 +674,6 @@ out:
> return (!ret) ? count : ret;
> }
>
> -static ssize_t fd_show_configfs_dev_params(struct se_device *dev, char *b)
> -{
> - struct fd_dev *fd_dev = FD_DEV(dev);
> - ssize_t bl = 0;
> -
> - bl = sprintf(b + bl, "TCM FILEIO ID: %u", fd_dev->fd_dev_id);
> - bl += sprintf(b + bl, " File: %s Size: %llu Mode: %s\n",
> - fd_dev->fd_dev_name, fd_dev->fd_dev_size,
> - (fd_dev->fbd_flags & FDBD_HAS_BUFFERED_IO_WCE) ?
> - "Buffered-WCE" : "O_DSYNC");
> - return bl;
> -}
> -
> static sector_t fd_get_blocks(struct se_device *dev)
> {
> struct fd_dev *fd_dev = FD_DEV(dev);
> @@ -706,6 +693,22 @@ static sector_t fd_get_blocks(struct se_device *dev)
> return div_u64(dev_size, dev->dev_attrib.block_size);
> }
>
> +static ssize_t fd_show_configfs_dev_params(struct se_device *dev, char *b)
> +{
> + struct fd_dev *fd_dev = FD_DEV(dev);
> + ssize_t bl = 0;
> + long long unsigned int dev_size;
> +
> + dev_size = fd_get_blocks(dev) * dev->dev_attrib.block_size;
> +
> + bl = sprintf(b + bl, "TCM FILEIO ID: %u", fd_dev->fd_dev_id);
> + bl += sprintf(b + bl, " File: %s Size: %llu Mode: %s\n",
> + fd_dev->fd_dev_name, dev_size,
> + (fd_dev->fbd_flags & FDBD_HAS_BUFFERED_IO_WCE) ?
> + "Buffered-WCE" : "O_DSYNC");
> + return bl;
> +}
> +
> static struct sbc_ops fd_sbc_ops = {
> .execute_rw = fd_execute_rw,
> .execute_sync_cache = fd_execute_sync_cache,
--
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