diff options
| author | Dennis Zhou <dennis@kernel.org> | 2018-12-05 12:10:30 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-12-07 22:26:37 -0700 |
| commit | 892ad71f622bbf39c6de321d5ca9b0fdec237c24 (patch) | |
| tree | e23362c12d2d65a4ffeaef92bbc196960fb42893 /block/bio.c | |
| parent | 2268c0feb0ffb1c1bb6e1d4d5505d30f485aa77b (diff) | |
dm: set the static flush bio device on demand
The next patch changes the macro bio_set_dev() to associate a bio with a
blkg based on the device set. However, dm creates a static bio to be
used as the basis for cloning empty flush bios on creation. The
bio_set_dev() call in alloc_dev() will cause problems with the next
patch adding association to bio_set_dev() because the call is before the
bdev is associated with a gendisk (bd_disk is %NULL). To get around
this, set the device on the static bio every time and use that to clone
to the other bios.
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Cc: Alasdair Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bio.c')
| -rw-r--r-- | block/bio.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/bio.c b/block/bio.c index 452b8e79b998..41ebb3f8e2fc 100644 --- a/block/bio.c +++ b/block/bio.c @@ -2021,6 +2021,7 @@ void bio_disassociate_blkg(struct bio *bio) bio->bi_blkg = NULL; } } +EXPORT_SYMBOL_GPL(bio_disassociate_blkg); /** * __bio_associate_blkg - associate a bio with the a blkg |