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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-08-03 03:31:47 +0200 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-08-03 03:31:47 +0200 |
| commit | 8018026ef29756af6144e2e2e8dffc9c2ed0d6f7 (patch) | |
| tree | e5c3ea9539212cac5e39a9e47f6ddd557820aa46 /fs/xfs/libxfs/xfs_format.h | |
| parent | xfs: add rmap btree stats infrastructure (diff) | |
| download | linux-8018026ef29756af6144e2e2e8dffc9c2ed0d6f7.tar.xz linux-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/libxfs/xfs_format.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_format.h | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 74f4d3da598c..3dbed011c29a 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -1319,18 +1319,11 @@ typedef __be32 xfs_inobt_ptr_t; */ #define XFS_RMAP_CRC_MAGIC 0x524d4233 /* 'RMB3' */ -/* - * The first data block of an AG depends on whether the filesystem was formatted - * with the finobt feature. If so, account for the finobt reserved root btree - * block. - */ -#define XFS_PREALLOC_BLOCKS(mp) \ +#define XFS_RMAP_BLOCK(mp) \ (xfs_sb_version_hasfinobt(&((mp)->m_sb)) ? \ XFS_FIBT_BLOCK(mp) + 1 : \ XFS_IBT_BLOCK(mp) + 1) - - /* * BMAP Btree format definitions * |