Re: [PATCH v2 2/2] ceph: add debugfs entries for mount syntax support

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On Wed, Aug 25, 2021 at 1:51 AM Venky Shankar <vshankar@xxxxxxxxxx> wrote:
>
> Signed-off-by: Venky Shankar <vshankar@xxxxxxxxxx>
> ---
>  fs/ceph/debugfs.c | 36 ++++++++++++++++++++++++++++++++++++
>  fs/ceph/super.c   |  3 +++
>  fs/ceph/super.h   |  2 ++
>  3 files changed, 41 insertions(+)
>
> diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
> index 66989c880adb..f9ff70704423 100644
> --- a/fs/ceph/debugfs.c
> +++ b/fs/ceph/debugfs.c
> @@ -22,6 +22,14 @@
>  #include "mds_client.h"
>  #include "metric.h"
>
> +#define CLIENT_FEATURES_DIR_NAME   "client_features"
> +#define MOUNT_DEVICE_V1_SUPPORT_FILE_NAME "v1_mount_syntax"
> +#define MOUNT_DEVICE_V2_SUPPORT_FILE_NAME "v2_mount_syntax"
> +
> +static struct dentry *ceph_client_features_dir;
> +static struct dentry *ceph_mount_device_v1_support;
> +static struct dentry *ceph_mount_device_v2_support;
> +
>  static int mdsmap_show(struct seq_file *s, void *p)
>  {
>         int i;
> @@ -416,6 +424,26 @@ void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
>                                                   &status_fops);
>  }
>
> +void ceph_fs_debugfs_client_features_init(void)
> +{
> +       ceph_client_features_dir = debugfs_create_dir(CLIENT_FEATURES_DIR_NAME,
> +                                                     ceph_debugfs_dir);
> +       ceph_mount_device_v1_support = debugfs_create_file(MOUNT_DEVICE_V1_SUPPORT_FILE_NAME,
> +                                                          0400,
> +                                                          ceph_client_features_dir,
> +                                                          NULL, NULL);
> +       ceph_mount_device_v2_support = debugfs_create_file(MOUNT_DEVICE_V2_SUPPORT_FILE_NAME,
> +                                                          0400,
> +                                                          ceph_client_features_dir,
> +                                                          NULL, NULL);
> +}

Makes sense to me. I can see having separate files for each syntax
type is expedient. If Jeff is cool with this then so am I.

-- 
Patrick Donnelly, Ph.D.
He / Him / His
Principal Software Engineer
Red Hat Sunnyvale, CA
GPG: 19F28A586F808C2402351B93C3301A3E258DD79D




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