On 2019/10/18 14:37, Shin'ichiro Kawasaki wrote:
> To prepare for write pointer consistency fix by fsck, add
> f2fs_reset_zone() helper function which calls RESET ZONE command. The
> function is added to lib/libf2fs_zoned which gathers zoned block device
> related functions.
>
> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawas...@wdc.com>
> ---
> include/f2fs_fs.h | 1 +
> lib/libf2fs_zoned.c | 26 ++++++++++++++++++++++++++
> 2 files changed, 27 insertions(+)
>
> diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h
> index 1f7ef05..a36927b 100644
> --- a/include/f2fs_fs.h
> +++ b/include/f2fs_fs.h
> @@ -1303,6 +1303,7 @@ extern int f2fs_report_zone(int, u_int64_t, void *);
> typedef int (report_zones_cb_t)(int i, void *, void *);
> extern int f2fs_report_zones(int, report_zones_cb_t *, void *);
> extern int f2fs_check_zones(int);
> +int f2fs_reset_zone(int, void *);
> extern int f2fs_reset_zones(int);
>
> #define SIZE_ALIGN(val, size) ((val) + (size) - 1) / (size)
> diff --git a/lib/libf2fs_zoned.c b/lib/libf2fs_zoned.c
> index 10d6d0b..1335038 100644
> --- a/lib/libf2fs_zoned.c
> +++ b/lib/libf2fs_zoned.c
> @@ -388,6 +388,26 @@ out:
> return ret;
> }
>
> +int f2fs_reset_zone(int i, void *blkzone)
> +{
> + struct blk_zone *blkz = (struct blk_zone *)blkzone;
> + struct device_info *dev = c.devices + i;
> + struct blk_zone_range range;
> + int ret;
> +
> + if (!blk_zone_seq(blkz) || blk_zone_empty(blkz))
> + return 0;
> +
> + /* Non empty sequential zone: reset */
> + range.sector = blk_zone_sector(blkz);
> + range.nr_sectors = blk_zone_length(blkz);
> + ret = ioctl(dev->fd, BLKRESETZONE, &range);
> + if (ret != 0)
As you did in other zoned block device code, errno would be preferred as return
value?
> + ERR_MSG("ioctl BLKRESETZONE failed\n");
> +
> + return ret;
> +}
> +
> int f2fs_reset_zones(int j)
> {
> struct device_info *dev = c.devices + j;
> @@ -491,6 +511,12 @@ int f2fs_check_zones(int i)
> return -1;
> }
>
> +int f2fs_reset_zone(int i, void *blkzone)
> +{
> + ERR_MSG("%d: Zoned block devices are not supported\n", i);
Minor thing:
"device is"?
> + return -1;
> +}
> +
> int f2fs_reset_zones(int i)
> {
> ERR_MSG("%d: Zoned block devices are not supported\n", i);
"device is"?
Thanks,
>
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