Wait for an IO to complete

[Rishi Agrawal]

Hi All,

I want to wait in my code till the IO actually goes to the disk.

For example

struct buffer_head *bh=sb_bread(sb, 20)

strcpy(bh->b_data, "Some Data");

/* mark and sync */
mark_buffer_dirty(bh);
sync_dirty_buffer(bh);

The above code only adds the bh to the request queue and returns.

I need something

write_buffer_to_disk(bh)

Which will return only if the data has been written on disk.

Please help
-- 

Regards,
Rishi Agrawal
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