• Jeff Mahoney's avatar
    btrfs: remove dead create_space_info calls · dc2d3005
    Jeff Mahoney authored
    Since commit 2be12ef7 (btrfs: Separate space_info create/update), we've
    separated out the creation and updating of the space info structures.
    That commit was a straightforward refactoring of the two parts of
    update_space_info, but we can go a step further.  Since commits
    c59021f8 (Btrfs: fix OOPS of empty filesystem after balance) and
     (Btrfs: Link block groups of different raid types), we know
    that the space_info structures will be created at mount and there will
    only ever be, at most, three of them.
    This patch cleans out the create_space_info calls after __find_space_info
    returns NULL since __find_space_info *can't* return NULL.
    The initial cause for reviewing this was the kobject_add calls from
    create_space_info occuring in sites where fs-reclaim wasn't allowed.  Now
    we are certain they occur only early in the mount process and are safe.
    Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
    Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
    Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
    Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>