• Andrew Morton's avatar
    [PATCH] JBD: Finish protection of journal_head.b_frozen_data · 990aef1a
    Andrew Morton authored
    We now start to move across the JBD data structure's fields, from "innermost"
    and outwards.
    
    Start with journal_head.b_frozen_data, because the locking for this field was
    partially implemented in jbd-010-b_committed_data-race-fix.patch.
    
    It is protected by jbd_lock_bh_state().  We keep the lock_journal() and
    spin_lock(&journal_datalist_lock) calls in place.  Later,
    spin_lock(&journal_datalist_lock) is replaced by
    spin_lock(&journal->j_list_lock).
    
    Of course, this completion of the locking around b_frozen_data also puts a
    lot of the locking for other fields in place.
    990aef1a
commit.c 21.7 KB