• Darrick J. Wong's avatar
    xfs: rmap btree add more reserved blocks · 8018026e
    Darrick J. Wong authored
    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: default avatarDave Chinner <dchinner@redhat.com>
    Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
    Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
    8018026e
xfs_fsops.c 22.6 KB