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author | 2018-06-15 09:35:33 -0400 | |
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committer | 2018-06-22 14:51:11 -0400 | |
commit | f21c601a2bb319ec19eb4562eadc7797d90fd90e (patch) | |
tree | df0ce3160517405987f0c657422861e200d50f9e /drivers/amba | |
parent | Linux 4.18-rc1 (diff) | |
download | linux-f21c601a2bb319ec19eb4562eadc7797d90fd90e.tar.gz linux-f21c601a2bb319ec19eb4562eadc7797d90fd90e.tar.bz2 linux-f21c601a2bb319ec19eb4562eadc7797d90fd90e.zip |
dm: use bio_split() when splitting out the already processed bio
Use of bio_clone_bioset() is inefficient if there is no need to clone
the original bio's bio_vec array. Best to use the bio_clone_fast()
variant. Also, just using bio_advance() is only part of what is needed
to properly setup the clone -- it doesn't account for the various
bio_integrity() related work that also needs to be performed (see
bio_split).
Address both of these issues by switching from bio_clone_bioset() to
bio_split().
Fixes: 18a25da8 ("dm: ensure bio submission follows a depth-first tree walk")
Cc: stable@vger.kernel.org # 4.15+, requires removal of '&' before md->queue->bio_split
Reported-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/amba')
0 files changed, 0 insertions, 0 deletions