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| author |   Darrick J. Wong <darrick.wong@oracle.com> | 2016-08-03 11:31:47 +1000 |
|---|---|---|
| committer |   Dave Chinner <david@fromorbit.com> | 2016-08-03 11:31:47 +1000 |
| commit | 8018026ef29756af6144e2e2e8dffc9c2ed0d6f7 (patch) | |
| tree | e5c3ea9539212cac5e39a9e47f6ddd557820aa46 /fs/xfs/xfs_mount.h | |
| parent | xfs: add rmap btree stats infrastructure (diff) | |
| download | linux-dev-8018026ef29756af6144e2e2e8dffc9c2ed0d6f7.tar.xz linux-dev-8018026ef29756af6144e2e2e8dffc9c2ed0d6f7.zip | |
xfs: rmap btree add more reserved blocks
Originally-From: Dave Chinner <dchinner@redhat.com>
XFS reserves a small amount of space in each AG for the minimum
number of free blocks needed for operation. Adding the rmap btree
increases the number of reserved blocks, but it also increases the
complexity of the calculation as the free inode btree is optional
(like the rmbt).
Rather than calculate the prealloc blocks every time we need to
check it, add a function to calculate it at mount time and store it
in the struct xfs_mount, and convert the XFS_PREALLOC_BLOCKS macro
just to use the xfs-mount variable directly.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index c1b798c72126..0537b1f28f90 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -119,6 +119,7 @@ typedef struct xfs_mount { uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ uint m_in_maxlevels; /* max inobt btree levels. */ + xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ struct radix_tree_root m_perag_tree; /* per-ag accounting info */ spinlock_t m_perag_lock; /* lock for m_perag_tree */ struct mutex m_growlock; /* growfs mutex */ |