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>submit_bh</SPAN
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><H2
>Name</H2
>submit_bh -- </DIV
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><H2
>Synopsis</H2
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><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <TT
CLASS="FUNCTION"
>submit_bh </TT
></CODE
>(int <TT
CLASS="PARAMETER"
><I
>rw</I
></TT
>, struct buffer_head * <TT
CLASS="PARAMETER"
><I
>bh</I
></TT
>);</CODE
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><H2
>Arguments</H2
><P
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><DIV
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><DL
><DT
><TT
CLASS="PARAMETER"
><I
>rw</I
></TT
></DT
><DD
><P
> whether to <TT
CLASS="CONSTANT"
>READ</TT
> or <TT
CLASS="CONSTANT"
>WRITE</TT
>, or maybe to <TT
CLASS="CONSTANT"
>READA</TT
> (read ahead)
</P
></DD
><DT
><TT
CLASS="PARAMETER"
><I
>bh</I
></TT
></DT
><DD
><P
> The &struct buffer_head which describes the I/O
</P
></DD
></DL
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><A
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></A
><H2
>Description</H2
><P
> <TT
CLASS="FUNCTION"
>submit_bh</TT
> is very similar in purpose to <TT
CLASS="FUNCTION"
>generic_make_request</TT
>, and
uses that function to do most of the work.
</P
><P
> The extra functionality provided by submit_bh is to determine
b_rsector from b_blocknr and b_size, and to set b_rdev from b_dev.
This is is appropriate for IO requests that come from the buffer
cache and page cache which (currently) always use aligned blocks.
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