diff options
| -rw-r--r-- | module/zfs/vdev_disk.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/module/zfs/vdev_disk.c b/module/zfs/vdev_disk.c index cb0cdd7bb..ee14165f5 100644 --- a/module/zfs/vdev_disk.c +++ b/module/zfs/vdev_disk.c @@ -484,6 +484,13 @@ bio_map(struct bio *bio, void *bio_ptr, unsigned int bio_size) else page = virt_to_page(bio_ptr); + /* + * Some network related block device uses tcp_sendpage, which + * doesn't behave well when using 0-count page, this is a + * safety net to catch them. + */ + ASSERT3S(page_count(page), >, 0); + if (bio_add_page(bio, page, size, offset) != size) break; |