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xfs: make growfs initialise the AGFL header
For verification purposes, AGFLs need to be initialised to a known set of values. For upcoming CRC changes, they are also headers that need to be initialised. Currently, growfs does neither for the AGFLs - it ignores them completely. Add initialisation of the AGFL to be full of invalid block numbers (NULLAGBLOCK) to put the infrastructure in place needed for CRC support. Includes a comment clarification from Jeff Liu. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by Rich Johnston <rjohnston@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
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1 changed files with 22 additions and 1 deletions
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@ -140,6 +140,7 @@ xfs_growfs_data_private(
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xfs_growfs_data_t *in) /* growfs data input struct */
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xfs_growfs_data_t *in) /* growfs data input struct */
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{
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{
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xfs_agf_t *agf;
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xfs_agf_t *agf;
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struct xfs_agfl *agfl;
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xfs_agi_t *agi;
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xfs_agi_t *agi;
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xfs_agnumber_t agno;
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xfs_agnumber_t agno;
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xfs_extlen_t agsize;
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xfs_extlen_t agsize;
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@ -207,7 +208,7 @@ xfs_growfs_data_private(
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nfree = 0;
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nfree = 0;
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for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
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for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
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/*
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/*
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* AG freelist header block
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* AG freespace header block
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*/
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
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XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
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@ -243,6 +244,26 @@ xfs_growfs_data_private(
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if (error)
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if (error)
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goto error0;
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goto error0;
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/*
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* AG freelist header block
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)),
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XFS_FSS_TO_BB(mp, 1), 0);
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if (!bp) {
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error = ENOMEM;
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goto error0;
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}
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agfl = XFS_BUF_TO_AGFL(bp);
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for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++)
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agfl->agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK);
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error = xfs_bwrite(bp);
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xfs_buf_relse(bp);
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if (error)
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goto error0;
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/*
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/*
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* AG inode header block
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* AG inode header block
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*/
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*/
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