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xfs: minor cleanup for xfs_reflink_end_cow
Use xfs_iext_prev_extent to skip to the previous extent instead of opencoding it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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@ -762,10 +762,8 @@ xfs_reflink_end_cow(
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xfs_trim_extent(&del, offset_fsb, end_fsb - offset_fsb);
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/* Extent delete may have bumped ext forward */
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if (!del.br_blockcount) {
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xfs_iext_prev(ifp, &icur);
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goto next_extent;
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}
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if (!del.br_blockcount)
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goto prev_extent;
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ASSERT(!isnullstartblock(got.br_startblock));
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@ -774,10 +772,8 @@ xfs_reflink_end_cow(
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* speculatively preallocated CoW extents that have been
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* allocated but have not yet been involved in a write.
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*/
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if (got.br_state == XFS_EXT_UNWRITTEN) {
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xfs_iext_prev(ifp, &icur);
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goto next_extent;
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}
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if (got.br_state == XFS_EXT_UNWRITTEN)
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goto prev_extent;
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/* Unmap the old blocks in the data fork. */
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xfs_defer_init(&dfops, &firstfsb);
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@ -816,9 +812,12 @@ xfs_reflink_end_cow(
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error = xfs_defer_finish(&tp, &dfops);
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if (error)
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goto out_defer;
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next_extent:
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if (!xfs_iext_get_extent(ifp, &icur, &got))
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break;
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continue;
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prev_extent:
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if (!xfs_iext_prev_extent(ifp, &icur, &got))
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break;
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}
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error = xfs_trans_commit(tp);
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