Re: [PATCH v11 13/25] xfs: Remove unneeded xfs_trans_roll_inode calls

Darrick J. Wong
2020-07-22T00:05:43Z

On Mon, Jul 20, 2020 at 05:15:54PM -0700, Allison Collins wrote:
> Some calls to xfs_trans_roll_inode and xfs_defer_finish routines are not
> needed. If they are the last operations executed in these functions, and
> no further changes are made, then higher level routines will roll or
> commit the transactions.
>
> Signed-off-by: Allison Collins <allison.henderson@oracle.com>
> Reviewed-by: Brian Foster <bfoster@redhat.com>

Looks decent,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
> fs/xfs/libxfs/xfs_attr.c | 61 ++++++------------------------------------------
> 1 file changed, 7 insertions(+), 54 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index 4eff875..1a78023 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -693,34 +693,15 @@ xfs_attr_leaf_addname(
> /*
> * If the result is small enough, shrink it all into the inode.
> */
> - if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
> + forkoff = xfs_attr_shortform_allfit(bp, dp);
> + if (forkoff)
> error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> /* bp is gone due to xfs_da_shrink_inode */
> - if (error)
> - return error;
> - error = xfs_defer_finish(&args->trans);
> - if (error)
> - return error;
> - }
> -
> - /*
> - * Commit the remove and start the next trans in series.
> - */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> -
> } else if (args->rmtblkno > 0) {
> /*
> * Added a "remote" value, just clear the incomplete flag.
> */
> error = xfs_attr3_leaf_clearflag(args);
> - if (error)
> - return error;
> -
> - /*
> - * Commit the flag value change and start the next trans in
> - * series.
> - */
> - error = xfs_trans_roll_inode(&args->trans, args->dp);
> }
> return error;
> }
> @@ -780,15 +761,11 @@ xfs_attr_leaf_removename(
> /*
> * If the result is small enough, shrink it all into the inode.
> */
> - if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
> - error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> + forkoff = xfs_attr_shortform_allfit(bp, dp);
> + if (forkoff)
> + return xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> /* bp is gone due to xfs_da_shrink_inode */
> - if (error)
> - return error;
> - error = xfs_defer_finish(&args->trans);
> - if (error)
> - return error;
> - }
> +
> return 0;
> }
>
> @@ -1070,18 +1047,8 @@ xfs_attr_node_addname(
> error = xfs_da3_join(state);
> if (error)
> goto out;
> - error = xfs_defer_finish(&args->trans);
> - if (error)
> - goto out;
> }
>
> - /*
> - * Commit and start the next trans in the chain.
> - */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> - if (error)
> - goto out;
> -
> } else if (args->rmtblkno > 0) {
> /*
> * Added a "remote" value, just clear the incomplete flag.
> @@ -1089,14 +1056,6 @@ xfs_attr_node_addname(
> error = xfs_attr3_leaf_clearflag(args);
> if (error)
> goto out;
> -
> - /*
> - * Commit the flag value change and start the next trans in
> - * series.
> - */
> - error = xfs_trans_roll_inode(&args->trans, args->dp);
> - if (error)
> - goto out;
> }
> retval = error = 0;
>
> @@ -1135,16 +1094,10 @@ xfs_attr_node_shrink(
> if (forkoff) {
> error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> /* bp is gone due to xfs_da_shrink_inode */
> - if (error)
> - return error;
> -
> - error = xfs_defer_finish(&args->trans);
> - if (error)
> - return error;
> } else
> xfs_trans_brelse(args->trans, bp);
>
> - return 0;
> + return error;
> }
>
> /*
> --
> 2.7.4
>