• Andrew Morton's avatar
    [PATCH] cleanup of bh->flags · 39e8cdf7
    Andrew Morton authored
    Moves all buffer_head-related stuff out of linux/fs.h and into
    linux/buffer_head.h.  buffer_head.h is currently included at the very
    end of fs.h.  So it is possible to include buffer_head directly from
    all .c files and remove this nested include.
    
    Also rationalises all the set_buffer_foo() and mark_buffer_bar()
    functions.  We have:
    
    	set_buffer_foo(bh)
    	clear_buffer_foo(bh)
    	buffer_foo(bh)
    
    and, in some cases, where needed:
    
    	test_set_buffer_foo(bh)
    	test_clear_buffer_foo(bh)
    
    And that's it.
    
    BUFFER_FNS() and TAS_BUFFER_FNS() macros generate all the above real
    inline functions.  Normally not a big fan of cpp abuse, but in this
    case it fits.  These function-generating macros are available to
    filesystems to expand their own b_state functions.  JBD uses this in
    one case.
    39e8cdf7
sysdep.c 2.77 KB