xfs: work around bogus gcc warning in xfs_allocbt_init_cursor
GCC 4.6 complains about an array subscript is above array bounds when using the btree index to index into the agf_levels array. The only two indices passed in are 0 and 1, and we have an assert insuring that. Replace the trick of using the array index directly with using constants in the already existing branch for assigning the XFS_BTREE_LASTREC_UPDATE flag. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Alex Elder <aelder@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
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@ -427,13 +427,16 @@ xfs_allocbt_init_cursor(
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cur->bc_tp = tp;
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cur->bc_mp = mp;
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cur->bc_nlevels = be32_to_cpu(agf->agf_levels[btnum]);
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cur->bc_btnum = btnum;
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cur->bc_blocklog = mp->m_sb.sb_blocklog;
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cur->bc_ops = &xfs_allocbt_ops;
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if (btnum == XFS_BTNUM_CNT)
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if (btnum == XFS_BTNUM_CNT) {
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cur->bc_nlevels = be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]);
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cur->bc_flags = XFS_BTREE_LASTREC_UPDATE;
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} else {
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cur->bc_nlevels = be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]);
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}
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cur->bc_private.a.agbp = agbp;
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cur->bc_private.a.agno = agno;
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