Re: [PATCH v2] xfs: fix compiler warnings

["Darrick J. Wong" <darrick.wong@oracle.com>]

On Fri, Sep 01, 2017 at 06:26:23AM -0400, Brian Foster wrote:
> On Thu, Aug 31, 2017 at 04:38:33PM -0700, Darrick J. Wong wrote:
> > Fix up all the compiler warnings that have crept in.
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> > ---
> >  fs/xfs/libxfs/xfs_inode_fork.c |    9 +++------
> >  fs/xfs/xfs_buf_item.c          |    2 ++
> >  fs/xfs/xfs_log_recover.c       |    4 ++++
> >  3 files changed, 9 insertions(+), 6 deletions(-)
> > 
> > diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c
> > index fb310d0..31840ca 100644
> > --- a/fs/xfs/libxfs/xfs_inode_fork.c
> > +++ b/fs/xfs/libxfs/xfs_inode_fork.c
> > @@ -1499,14 +1499,11 @@ xfs_iext_realloc_indirect(
> >  	xfs_ifork_t	*ifp,		/* inode fork pointer */
> >  	int		new_size)	/* new indirection array size */
> >  {
> > -	int		nlists;		/* number of irec's (ex lists) */
> > -	int		size;		/* current indirection array size */
> > -
> >  	ASSERT(ifp->if_flags & XFS_IFEXTIREC);
> > -	nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ;
> > -	size = nlists * sizeof(xfs_ext_irec_t);
> >  	ASSERT(ifp->if_real_bytes);
> > -	ASSERT((new_size >= 0) && (new_size != size));
> > +	ASSERT((new_size >= 0) &&
> > +	       (new_size != ((ifp->if_real_bytes / XFS_IEXT_BUFSZ) *
> > +			     sizeof(xfs_ext_irec_t))));
> >  	if (new_size == 0) {
> >  		xfs_iext_destroy(ifp);
> >  	} else {
> > diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
> > index ef2c137..1a7814a 100644
> > --- a/fs/xfs/xfs_buf_item.c
> > +++ b/fs/xfs/xfs_buf_item.c
> > @@ -570,7 +570,9 @@ xfs_buf_item_unlock(
> >  	bool			aborted = !!(lip->li_flags & XFS_LI_ABORTED);
> >  	bool			hold = !!(bip->bli_flags & XFS_BLI_HOLD);
> >  	bool			dirty = !!(bip->bli_flags & XFS_BLI_DIRTY);
> > +#ifdef DEBUG
> >  	bool			ordered = !!(bip->bli_flags & XFS_BLI_ORDERED);
> > +#endif
> >  
> 
> This and the hunk below will break the CONFIG_XFS_WARN build.

Oops, good catch.

> Brian
> 
> >  	/* Clear the buffer's association with this transaction. */
> >  	bp->b_transp = NULL;
> > diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
> > index a362399..04a131c 100644
> > --- a/fs/xfs/xfs_log_recover.c
> > +++ b/fs/xfs/xfs_log_recover.c
> > @@ -4827,12 +4827,16 @@ xlog_recover_process_intents(
> >  	int			error = 0;
> >  	struct xfs_ail_cursor	cur;
> >  	struct xfs_ail		*ailp;
> > +#ifdef DEBUG
> >  	xfs_lsn_t		last_lsn;
> > +#endif
> >  
> >  	ailp = log->l_ailp;
> >  	spin_lock(&ailp->xa_lock);
> >  	lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
> > +#ifdef DEBUG
> >  	last_lsn = xlog_assign_lsn(log->l_curr_cycle, log->l_curr_block);
> > +#endif

This one ought to be fine, because the ASSERT is itself protected by an
'#ifdef DEBUG'.

--D

> >  	while (lip != NULL) {
> >  		/*
> >  		 * We're done when we see something other than an intent.
> > --
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