• Josef Bacik's avatar
    Btrfs: reduce the amount of space needed for truncates · 07127184
    Josef Bacik authored
    With btrfs_truncate_inode_items we always return if we have to go to another
    leaf, which makes us do our reservation again.  This means we will only ever
    modify one leaf at a time, so we only need 1 items worth of slack space.  Also,
    since we are deleting we will not be creating nodes as we go down, if anything
    we'll be free'ing them as we merge them together, so make a different
    calculation for truncate which will only have the worst case useage of COW'ing
    the entire path down to the leaf.  Thanks,
    Signed-off-by: default avatarJosef Bacik <josef@redhat.com>
    07127184
ctree.h 85.8 KB