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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-08-17 20:52:06 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-08-17 19:35:53 -0700 |
| commit | d81665198b83e55a28339d1f3e4890ed8a434556 (patch) | |
| tree | b6038be4bcbc16680ed2cec65e10ea1cc6f63933 /block/bfq-iosched.h | |
| parent | af822aa68fbdf0a480a17462ed70232998127453 (diff) | |
| download | linux-stable-d81665198b83e55a28339d1f3e4890ed8a434556.tar.gz linux-stable-d81665198b83e55a28339d1f3e4890ed8a434556.tar.bz2 linux-stable-d81665198b83e55a28339d1f3e4890ed8a434556.zip | |
block: Fix page_is_mergeable() for compound pages
If we pass in an offset which is larger than PAGE_SIZE, then
page_is_mergeable() thinks it's not mergeable with the previous bio_vec,
leading to a large number of bio_vecs being used. Use a slightly more
obvious test that the two pages are compatible with each other.
Fixes: 52d52d1c98a9 ("block: only allow contiguous page structs in a bio_vec")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bfq-iosched.h')
0 files changed, 0 insertions, 0 deletions