[XFS] Allow punching holes to free space when at ENOSPC
Make the free file space transaction able to dip into the reserved blocks to ensure that we can successfully free blocks when the filesystem is at ENOSPC. SGI-PV: 967788 SGI-Modid: xfs-linux-melb:xfs-kern:29167a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
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@ -4434,9 +4434,12 @@ xfs_free_file_space(
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while (!error && !done) {
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/*
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* allocate and setup the transaction
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* allocate and setup the transaction. Allow this
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* transaction to dip into the reserve blocks to ensure
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* the freeing of the space succeeds at ENOSPC.
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*/
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tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT);
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tp->t_flags |= XFS_TRANS_RESERVE;
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error = xfs_trans_reserve(tp,
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resblks,
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XFS_WRITE_LOG_RES(mp),
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