• Theodore Ts'o's avatar
    ext4: remove unneeded ext4_journal_get_undo_access · 2cd05cc3
    Theodore Ts'o authored
    The block allocation code used to use jbd2_journal_get_undo_access as
    a way to make changes that wouldn't show up until the commit took
    place.  The new multi-block allocation code has a its own way of
    preventing newly freed blocks from getting reused until the commit
    takes place (it avoids updating the buddy bitmaps until the commit is
    done), so we don't need to use jbd2_journal_get_undo_access(), which
    has extra overhead compared to jbd2_journal_get_write_access().
    
    There was one last vestigal use of ext4_journal_get_undo_access() in
    ext4_add_groupblocks(); change it to use ext4_journal_get_write_access()
    and then remove the ext4_journal_get_undo_access() support.
    Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
    2cd05cc3
ext4_jbd2.h 10.2 KB