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SubjectRe: [PATCH] xfs: Use WARN_ON_ONCE rather than BUG for bailout mount-operation
2019년 8월 30일 (금) 오전 9:33, Darrick J. Wong <darrick.wong@oracle.com>님이 작성:
>
> 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.

Oh..
Let me resend patch soon after wrapping 80 column lines.

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

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