Name
submit_bio — 
     submit a bio to the block device layer for I/O
 
Synopsis
| void submit_bio ( | int rw, | 
|  | struct bio * bio ); | 
 
Arguments
- rw
- 
     whether to - READor- WRITE, or maybe to- READA(read ahead)
 
- bio
- 
     The struct bio which describes the I/O
     
Description
   submit_bio is very similar in purpose to generic_make_request, and
   uses that function to do most of the work. Both are fairly rough
   interfaces; bio must be presetup and ready for I/O.