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block: remove BIO_EOPNOTSUPP

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Since the big barrier rewrite/removal in 2007 we never fail FLUSH or
FUA requests, which means we can remove the magic BIO_EOPNOTSUPP flag
to help propagating those to the buffer_head layer.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Jeff Moyer <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2015-04-24 21:41:01 +02:00 • committed by Jens Axboe
commit b25de9d6da
7 changed files with 2 additions and 38 deletions
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12
fs/nilfs2/segbuf.c
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@ -343,11 +343,6 @@ static void nilfs_end_bio_write(struct bio *bio, int err)
const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct nilfs_segment_buffer *segbuf = bio->bi_private;
if (err == -EOPNOTSUPP) {
set_bit(BIO_EOPNOTSUPP, &bio->bi_flags);
/* to be detected by nilfs_segbuf_submit_bio() */
}
if (!uptodate)
atomic_inc(&segbuf->sb_err);
@ -374,15 +369,8 @@ static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
bio->bi_end_io = nilfs_end_bio_write;
bio->bi_private = segbuf;
bio_get(bio);
submit_bio(mode, bio);
segbuf->sb_nbio++;
if (bio_flagged(bio, BIO_EOPNOTSUPP)) {
bio_put(bio);
err = -EOPNOTSUPP;
goto failed;
}
bio_put(bio);
wi->bio = NULL;
wi->rest_blocks -= wi->end - wi->start;