vfs: fix off-by-one error in vfs_buf_check_mapped
The check added in r285872 can trigger for valid buffers if the buffer space used happens to be just after unmapped_buf in KVA space. Discussed with: kib Sponsored by: Citrix Systems R&D
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@ -955,7 +955,7 @@ vfs_buf_check_mapped(struct buf *bp)
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("mapped buf: b_kvabase was not updated %p", bp));
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KASSERT(bp->b_data != unmapped_buf,
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("mapped buf: b_data was not updated %p", bp));
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KASSERT(bp->b_data < unmapped_buf || bp->b_data > unmapped_buf +
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KASSERT(bp->b_data < unmapped_buf || bp->b_data => unmapped_buf +
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MAXPHYS, ("b_data + b_offset unmapped %p", bp));
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}
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