xfs: use the actual AG length when reserving blocks
commit 20e73b000b
upstream.
We need to use the actual AG length when making per-AG reservations,
since we could otherwise end up reserving more blocks out of the last
AG than there are actual blocks.
Complained-about-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
d9c7c9fa60
commit
b96e4e87d2
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@ -256,6 +256,9 @@ xfs_ag_resv_init(
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goto out;
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}
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ASSERT(xfs_perag_resv(pag, XFS_AG_RESV_METADATA)->ar_reserved +
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xfs_perag_resv(pag, XFS_AG_RESV_AGFL)->ar_reserved <=
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pag->pagf_freeblks + pag->pagf_flcount);
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out:
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return error;
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}
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@ -408,13 +408,14 @@ xfs_refcountbt_calc_size(
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*/
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xfs_extlen_t
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xfs_refcountbt_max_size(
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struct xfs_mount *mp)
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struct xfs_mount *mp,
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xfs_agblock_t agblocks)
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{
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/* Bail out if we're uninitialized, which can happen in mkfs. */
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if (mp->m_refc_mxr[0] == 0)
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return 0;
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return xfs_refcountbt_calc_size(mp, mp->m_sb.sb_agblocks);
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return xfs_refcountbt_calc_size(mp, agblocks);
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}
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/*
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@ -429,22 +430,24 @@ xfs_refcountbt_calc_reserves(
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{
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struct xfs_buf *agbp;
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struct xfs_agf *agf;
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xfs_agblock_t agblocks;
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xfs_extlen_t tree_len;
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int error;
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if (!xfs_sb_version_hasreflink(&mp->m_sb))
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return 0;
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*ask += xfs_refcountbt_max_size(mp);
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error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp);
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if (error)
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return error;
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agf = XFS_BUF_TO_AGF(agbp);
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agblocks = be32_to_cpu(agf->agf_length);
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tree_len = be32_to_cpu(agf->agf_refcount_blocks);
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xfs_buf_relse(agbp);
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*ask += xfs_refcountbt_max_size(mp, agblocks);
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*used += tree_len;
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return error;
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@ -66,7 +66,8 @@ extern void xfs_refcountbt_compute_maxlevels(struct xfs_mount *mp);
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extern xfs_extlen_t xfs_refcountbt_calc_size(struct xfs_mount *mp,
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unsigned long long len);
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extern xfs_extlen_t xfs_refcountbt_max_size(struct xfs_mount *mp);
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extern xfs_extlen_t xfs_refcountbt_max_size(struct xfs_mount *mp,
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xfs_agblock_t agblocks);
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extern int xfs_refcountbt_calc_reserves(struct xfs_mount *mp,
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xfs_agnumber_t agno, xfs_extlen_t *ask, xfs_extlen_t *used);
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@ -549,13 +549,14 @@ xfs_rmapbt_calc_size(
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*/
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xfs_extlen_t
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xfs_rmapbt_max_size(
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struct xfs_mount *mp)
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struct xfs_mount *mp,
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xfs_agblock_t agblocks)
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{
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/* Bail out if we're uninitialized, which can happen in mkfs. */
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if (mp->m_rmap_mxr[0] == 0)
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return 0;
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return xfs_rmapbt_calc_size(mp, mp->m_sb.sb_agblocks);
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return xfs_rmapbt_calc_size(mp, agblocks);
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}
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/*
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@ -570,25 +571,24 @@ xfs_rmapbt_calc_reserves(
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{
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struct xfs_buf *agbp;
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struct xfs_agf *agf;
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xfs_extlen_t pool_len;
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xfs_agblock_t agblocks;
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xfs_extlen_t tree_len;
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int error;
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if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
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return 0;
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/* Reserve 1% of the AG or enough for 1 block per record. */
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pool_len = max(mp->m_sb.sb_agblocks / 100, xfs_rmapbt_max_size(mp));
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*ask += pool_len;
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error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp);
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if (error)
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return error;
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agf = XFS_BUF_TO_AGF(agbp);
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agblocks = be32_to_cpu(agf->agf_length);
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tree_len = be32_to_cpu(agf->agf_rmap_blocks);
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xfs_buf_relse(agbp);
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/* Reserve 1% of the AG or enough for 1 block per record. */
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*ask += max(agblocks / 100, xfs_rmapbt_max_size(mp, agblocks));
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*used += tree_len;
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return error;
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@ -60,7 +60,8 @@ extern void xfs_rmapbt_compute_maxlevels(struct xfs_mount *mp);
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extern xfs_extlen_t xfs_rmapbt_calc_size(struct xfs_mount *mp,
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unsigned long long len);
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extern xfs_extlen_t xfs_rmapbt_max_size(struct xfs_mount *mp);
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extern xfs_extlen_t xfs_rmapbt_max_size(struct xfs_mount *mp,
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xfs_agblock_t agblocks);
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extern int xfs_rmapbt_calc_reserves(struct xfs_mount *mp,
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xfs_agnumber_t agno, xfs_extlen_t *ask, xfs_extlen_t *used);
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@ -631,6 +631,20 @@ xfs_growfs_data_private(
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xfs_set_low_space_thresholds(mp);
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mp->m_alloc_set_aside = xfs_alloc_set_aside(mp);
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/*
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* If we expanded the last AG, free the per-AG reservation
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* so we can reinitialize it with the new size.
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*/
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if (new) {
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struct xfs_perag *pag;
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pag = xfs_perag_get(mp, agno);
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error = xfs_ag_resv_free(pag);
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xfs_perag_put(pag);
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if (error)
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goto out;
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}
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/* Reserve AG metadata blocks. */
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error = xfs_fs_reserve_ag_blocks(mp);
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if (error && error != -ENOSPC)
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