diff options
Diffstat (limited to 'fs/bio.c')
-rw-r--r-- | fs/bio.c | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -507,11 +507,12 @@ int bio_get_nr_vecs(struct block_device *bdev) struct request_queue *q = bdev_get_queue(bdev); int nr_pages; - nr_pages = ((queue_max_sectors(q) << 9) + PAGE_SIZE - 1) >> PAGE_SHIFT; - if (nr_pages > queue_max_segments(q)) - nr_pages = queue_max_segments(q); + nr_pages = min_t(unsigned, + queue_max_segments(q), + queue_max_sectors(q) / (PAGE_SIZE >> 9) + 1); + + return min_t(unsigned, nr_pages, BIO_MAX_PAGES); - return nr_pages; } EXPORT_SYMBOL(bio_get_nr_vecs); |