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SubjectRe: [PATCH] xfs: Use WARN_ON_ONCE rather than BUG for bailout mount-operation
On Fri, Aug 30, 2019 at 09:30:22AM +0900, Austin Kim wrote:
> If the CONFIG_BUG is enabled, BUG is executed and then system is crashed.
> However, the bailout for mount is no longer proceeding.
>
> For this reason, using WARN_ON_ONCE rather than BUG can prevent this situation.
>
> Signed-off-by: Austin Kim <austindh.kim@gmail.com>
> ---
> fs/xfs/xfs_mount.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
> index 322da69..c0d0b72 100644
> --- a/fs/xfs/xfs_mount.c
> +++ b/fs/xfs/xfs_mount.c
> @@ -213,8 +213,7 @@ xfs_initialize_perag(
> goto out_hash_destroy;
>
> spin_lock(&mp->m_perag_lock);
> - if (radix_tree_insert(&mp->m_perag_tree, index, pag)) {
> - BUG();
> + if (WARN_ON_ONCE(radix_tree_insert(&mp->m_perag_tree, index, pag))) {

Er... please wrap the line at 80 columns.

--D

> spin_unlock(&mp->m_perag_lock);
> radix_tree_preload_end();
> error = -EEXIST;
> --
> 2.6.2
>

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