Commit
399254aaf489211 ("block: add BIO_NO_PAGE_REF flag") introduces
BIO_NO_PAGE_REF, and once this flag is set for one bio, all pages
in the bio won't be get/put during IO.
However, if one bio is submitted via __blkdev_direct_IO_simple(),
even though BIO_NO_PAGE_REF is set, pages still may be put.
Fixes this issue by avoiding to put pages if BIO_NO_PAGE_REF is
set.
Fixes: 399254aaf489211 ("block: add BIO_NO_PAGE_REF flag")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
bio_for_each_segment_all(bvec, &bio, i, iter_all) {
if (should_dirty && !PageCompound(bvec->bv_page))
set_page_dirty_lock(bvec->bv_page);
- put_page(bvec->bv_page);
+ if (!bio_flagged(&bio, BIO_NO_PAGE_REF))
+ put_page(bvec->bv_page);
}
if (unlikely(bio.bi_status))