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xfs: improve busy extent sorting
Sort busy extents by the full block number instead of just the AGNO so that we can issue consecutive discard requests that the block layer could merge (although we'll need additional block layer fixes for fast devices). 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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1 changed files with 12 additions and 4 deletions
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@ -656,9 +656,17 @@ xfs_extent_busy_wait_all(
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int
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xfs_extent_busy_ag_cmp(
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void *priv,
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struct list_head *a,
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struct list_head *b)
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struct list_head *l1,
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struct list_head *l2)
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{
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return container_of(a, struct xfs_extent_busy, list)->agno -
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container_of(b, struct xfs_extent_busy, list)->agno;
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struct xfs_extent_busy *b1 =
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container_of(l1, struct xfs_extent_busy, list);
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struct xfs_extent_busy *b2 =
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container_of(l2, struct xfs_extent_busy, list);
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s32 diff;
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diff = b1->agno - b2->agno;
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if (!diff)
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diff = b1->bno - b2->bno;
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return diff;
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}
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