There is one thing about cache pages and buffers that puzzles me and that I have not found in any documenatation and that is not quite obvious from the source.
What is the relationship between: a) pages and their buffers associated with the device (tybically bh->bdev->bd_inode and its mapping) and b) pages and their buffers associated with files on that device. I am almost certain they are not the same but at the same time the relationship seems to be quite important, otherwise we wouldn't have such dark functions as unmap_underlying_metadata (why on earth is it called this way? - Does metadata mean, in true kernel naming confusion spirit, device pages/blocks?). Can anyone tell me what the relationship exactly is and what one has to be aware of when manipulating either of these? Thank you very much in advance, Martin Jambor - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
