tree b1518cf0b6c301178e0a320f80610cd5b3aa7625
parent 33659ebbae262228eef4e0fe990f393d1f0ed941
author Christoph Hellwig <hch@lst.de> 1281198039 +0200
committer Jens Axboe <jaxboe@fusionio.com> 1281198039 +0200

block: unify flags for struct bio and struct request

Remove the current bio flags and reuse the request flags for the bio, too.
This allows to more easily trace the type of I/O from the filesystem
down to the block driver.  There were two flags in the bio that were
missing in the requests:  BIO_RW_UNPLUG and BIO_RW_AHEAD.  Also I've
renamed two request flags that had a superflous RW in them.

Note that the flags are in bio.h despite having the REQ_ name - as
blkdev.h includes bio.h that is the only way to go for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>