On Tue, Nov 16, 2021 at 09:13:41PM -0700, Allison Henderson wrote:
> This patch adds a debug option to enable log attribute replay. Eventually
> this can be removed when delayed attrs becomes permanent.
>
> Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
> Reviewed-by: Chandan Babu R <chandanrlinux@xxxxxxxxx>
LOL LARP
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
--D
> ---
> fs/xfs/libxfs/xfs_attr.h | 4 ++++
> fs/xfs/xfs_globals.c | 1 +
> fs/xfs/xfs_sysctl.h | 1 +
> fs/xfs/xfs_sysfs.c | 24 ++++++++++++++++++++++++
> 4 files changed, 30 insertions(+)
>
> diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
> index 977434f343a1..6f5a150565c7 100644
> --- a/fs/xfs/libxfs/xfs_attr.h
> +++ b/fs/xfs/libxfs/xfs_attr.h
> @@ -30,7 +30,11 @@ struct xfs_attr_list_context;
>
> static inline bool xfs_has_larp(struct xfs_mount *mp)
> {
> +#ifdef DEBUG
> + return xfs_globals.larp;
> +#else
> return false;
> +#endif
> }
>
> /*
> diff --git a/fs/xfs/xfs_globals.c b/fs/xfs/xfs_globals.c
> index f62fa652c2fd..4d0a98f920ca 100644
> --- a/fs/xfs/xfs_globals.c
> +++ b/fs/xfs/xfs_globals.c
> @@ -41,5 +41,6 @@ struct xfs_globals xfs_globals = {
> #endif
> #ifdef DEBUG
> .pwork_threads = -1, /* automatic thread detection */
> + .larp = false, /* log attribute replay */
> #endif
> };
> diff --git a/fs/xfs/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h
> index 7692e76ead33..f78ad6b10ea5 100644
> --- a/fs/xfs/xfs_sysctl.h
> +++ b/fs/xfs/xfs_sysctl.h
> @@ -83,6 +83,7 @@ extern xfs_param_t xfs_params;
> struct xfs_globals {
> #ifdef DEBUG
> int pwork_threads; /* parallel workqueue threads */
> + bool larp; /* log attribute replay */
> #endif
> int log_recovery_delay; /* log recovery delay (secs) */
> int mount_delay; /* mount setup delay (secs) */
> diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
> index 8608f804388f..02a0b55e26b3 100644
> --- a/fs/xfs/xfs_sysfs.c
> +++ b/fs/xfs/xfs_sysfs.c
> @@ -227,6 +227,29 @@ pwork_threads_show(
> return sysfs_emit(buf, "%d\n", xfs_globals.pwork_threads);
> }
> XFS_SYSFS_ATTR_RW(pwork_threads);
> +
> +static ssize_t
> +larp_store(
> + struct kobject *kobject,
> + const char *buf,
> + size_t count)
> +{
> + ssize_t ret;
> +
> + ret = kstrtobool(buf, &xfs_globals.larp);
> + if (ret < 0)
> + return ret;
> + return count;
> +}
> +
> +STATIC ssize_t
> +larp_show(
> + struct kobject *kobject,
> + char *buf)
> +{
> + return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.larp);
> +}
> +XFS_SYSFS_ATTR_RW(larp);
> #endif /* DEBUG */
>
> static struct attribute *xfs_dbg_attrs[] = {
> @@ -236,6 +259,7 @@ static struct attribute *xfs_dbg_attrs[] = {
> ATTR_LIST(always_cow),
> #ifdef DEBUG
> ATTR_LIST(pwork_threads),
> + ATTR_LIST(larp),
> #endif
> NULL,
> };
> --
> 2.25.1
>
