• Jan Kara's avatar
    ocfs2: fix quota file corruption · 15c34a76
    Jan Kara authored
    Global quota files are accessed from different nodes.  Thus we cannot
    cache offset of quota structure in the quota file after we drop our node
    reference count to it because after that moment quota structure may be
    freed and reallocated elsewhere by a different node resulting in
    corruption of quota file.
    
    Fix the problem by clearing dq_off when we are releasing dquot structure.
    We also remove the DB_READ_B handling because it is useless -
    DQ_ACTIVE_B is set iff DQ_READ_B is set.
    Signed-off-by: default avatarJan Kara <jack@suse.cz>
    Cc: Goldwyn Rodrigues <rgoldwyn@suse.de>
    Cc: Joel Becker <jlbec@evilplan.org>
    Reviewed-by: default avatarMark Fasheh <mfasheh@suse.de>
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    15c34a76
quota_global.c 27.3 KB