linux-kernel - Re: [PATCH v2 3/3] btrfs: pass btrfs_io_geometry to is_single_device

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Message-ID: <CAL3q7H5vp=G=RzvYOdYq8FMTSyGbdSObo4w76SjaaTq4Nmpn1g@mail.gmail.com>
Date: Mon, 16 Dec 2024 11:24:09 +0000
From: Filipe Manana <fdmanana@...nel.org>
To: Johannes Thumshirn <jth@...nel.org>
Cc: Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com>, 
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Filipe Manana <fdmanana@...e.com>, Johannes Thumshirn <johannes.thjumshirn@....com>, 
	Johannes Thumshirn <johannes.thumshirn@....com>
Subject: Re: [PATCH v2 3/3] btrfs: pass btrfs_io_geometry to is_single_device_io

On Mon, Dec 16, 2024 at 8:12 AM Johannes Thumshirn <jth@...nel.org> wrote:
>
> From: Johannes Thumshirn <johannes.thumshirn@....com>
>
> Now that we have the stripe tree decision saved in struct
> btrfs_io_geometry we can pass it into is_single_device_io() and get rid of
> another call to btrfs_need_raid_stripe_tree_update().
>
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>

Reviewed-by: Filipe Manana <fdmanana@...e.com>

Looks good, thanks.

> ---
>  fs/btrfs/volumes.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
> index 088ba0499e184c93a402a3f92167cccfa33eec58..fcd80ba9dd4286305ebeea58adc5950a532cc06c 100644
> --- a/fs/btrfs/volumes.c
> +++ b/fs/btrfs/volumes.c
> @@ -6362,7 +6362,7 @@ static bool is_single_device_io(struct btrfs_fs_info *fs_info,
>                                 const struct btrfs_io_stripe *smap,
>                                 const struct btrfs_chunk_map *map,
>                                 int num_alloc_stripes,
> -                               enum btrfs_map_op op, int mirror_num)
> +                               struct btrfs_io_geometry *io_geom)
>  {
>         if (!smap)
>                 return false;
> @@ -6370,10 +6370,10 @@ static bool is_single_device_io(struct btrfs_fs_info *fs_info,
>         if (num_alloc_stripes != 1)
>                 return false;
>
> -       if (btrfs_need_stripe_tree_update(fs_info, map->type) && op != BTRFS_MAP_READ)
> +       if (io_geom->use_rst && io_geom->op != BTRFS_MAP_READ)
>                 return false;
>
> -       if ((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && mirror_num > 1)
> +       if ((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && io_geom->mirror_num > 1)
>                 return false;
>
>         return true;
> @@ -6648,8 +6648,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
>          * physical block information on the stack instead of allocating an
>          * I/O context structure.
>          */
> -       if (is_single_device_io(fs_info, smap, map, num_alloc_stripes, op,
> -                               io_geom.mirror_num)) {
> +       if (is_single_device_io(fs_info, smap, map, num_alloc_stripes, &io_geom)) {
>                 ret = set_io_stripe(fs_info, logical, length, smap, map, &io_geom);
>                 if (mirror_num_ret)
>                         *mirror_num_ret = io_geom.mirror_num;
>
> --
> 2.43.0
>
>