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| author |   Darrick J. Wong <djwong@kernel.org> | 2024-11-20 16:20:22 -0800 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2024-12-23 13:06:04 -0800 |
| commit | e1c76fce50bb750dff236aa51a3b698de4f7132c (patch) | |
| tree | e78ace77349a6e1f77a76170d8aca13e6ac60abb /fs/xfs/libxfs/xfs_trans_space.h | |
| parent | xfs: introduce realtime rmap btree ondisk definitions (diff) | |
| download | wireguard-linux-e1c76fce50bb750dff236aa51a3b698de4f7132c.tar.xz wireguard-linux-e1c76fce50bb750dff236aa51a3b698de4f7132c.zip | |
xfs: realtime rmap btree transaction reservations
Make sure that there's enough log reservation to handle mapping
and unmapping realtime extents. We have to reserve enough space
to handle a split in the rtrmapbt to add the record and a second
split in the regular rmapbt to record the rtrmapbt split.
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to '')
| -rw-r--r-- | fs/xfs/libxfs/xfs_trans_space.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_trans_space.h b/fs/xfs/libxfs/xfs_trans_space.h index 1155ff2d37e2..d89b570aafcc 100644 --- a/fs/xfs/libxfs/xfs_trans_space.h +++ b/fs/xfs/libxfs/xfs_trans_space.h @@ -14,6 +14,19 @@ #define XFS_MAX_CONTIG_BMAPS_PER_BLOCK(mp) \ (((mp)->m_bmap_dmxr[0]) - ((mp)->m_bmap_dmnr[0])) +/* Worst case number of realtime rmaps that can be held in a block. */ +#define XFS_MAX_CONTIG_RTRMAPS_PER_BLOCK(mp) \ + (((mp)->m_rtrmap_mxr[0]) - ((mp)->m_rtrmap_mnr[0])) + +/* Adding one realtime rmap could split every level to the top of the tree. */ +#define XFS_RTRMAPADD_SPACE_RES(mp) ((mp)->m_rtrmap_maxlevels) + +/* Blocks we might need to add "b" realtime rmaps to a tree. */ +#define XFS_NRTRMAPADD_SPACE_RES(mp, b) \ + ((((b) + XFS_MAX_CONTIG_RTRMAPS_PER_BLOCK(mp) - 1) / \ + XFS_MAX_CONTIG_RTRMAPS_PER_BLOCK(mp)) * \ + XFS_RTRMAPADD_SPACE_RES(mp)) + /* Worst case number of rmaps that can be held in a block. */ #define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) \ (((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0])) |