• Curt Wohlgemuth's avatar
    writeback: Add a 'reason' to wb_writeback_work · 0e175a18
    Curt Wohlgemuth authored
    This creates a new 'reason' field in a wb_writeback_work
    structure, which unambiguously identifies who initiates
    writeback activity.  A 'wb_reason' enumeration has been
    added to writeback.h, to enumerate the possible reasons.
    
    The 'writeback_work_class' and tracepoint event class and
    'writeback_queue_io' tracepoints are updated to include the
    symbolic 'reason' in all trace events.
    
    And the 'writeback_inodes_sbXXX' family of routines has had
    a wb_stats parameter added to them, so callers can specify
    why writeback is being started.
    Acked-by: default avatarJan Kara <jack@suse.cz>
    Signed-off-by: default avatarCurt Wohlgemuth <curtw@google.com>
    Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
    0e175a18
writeback.h 12.6 KB