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block: unify flags for struct bio and struct request

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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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-08-07 18:20:39 +02:00 • committed by Jens Axboe
commit 7b6d91daee
47 changed files with 242 additions and 289 deletions
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2
fs/nilfs2/segbuf.c
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@ -508,7 +508,7 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
* Last BIO is always sent through the following
* submission.
*/
rw |= (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG);
rw |= REQ_SYNC | REQ_UNPLUG;
res = nilfs_segbuf_submit_bio(segbuf, &wi, rw);
}