search for: bvec_set_pag

...bip->bip_vec + bip->bip_vcnt; - if (bip->bip_vcnt && bvec_gap_to_prev(&bdev_get_queue(bio->bi_bdev)->limits, &bip->bip_vec[bip->bip_vcnt - 1], offset)) return 0; - iv->bv_page = page; - iv->bv_len = len; - iv->bv_offset = offset; + bvec_set_page(&bip->bip_vec[bip->bip_vcnt], page, len, offset); bip->bip_vcnt++; return len; diff --git a/block/bio.c b/block/bio.c index d7fbc7adfc50aa..71e411a0c12950 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1029,10 +1029,7 @@ int bio_add_hw_page(struct request_queue *q, struct bio *b...

Use the bvec_set_page helper to initialize a bvec. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/vhost/vringh.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index 33eb941fcf1546..a1e27da544814a 100644 --- a/drivers/vhost/...

On Mon, Jan 30, 2023 at 08:47:58PM -0800, Jakub Kicinski wrote: > kinda random thought but since we're touching this area - could we > perhaps move the definition of struct bio_vec and trivial helpers > like this into a new header? bvec.h pulls in mm.h which is a right > behemoth :S I bet we can drop mm.h now. It was originally added for nth_page() in 3d75ca0adef4 but those were

...124,10 +1132,22 @@ static int iotlb_translate(const struct vringh *vrh, > } > > size = map->size - addr + map->start; > - pa = map->addr + addr - map->start; > - pfn = pa >> PAGE_SHIFT; > - bvec_set_page(&iov[ret], pfn_to_page(pfn), min(len - s, size), > - pa & (PAGE_SIZE - 1)); > + if (ivec->is_iovec) { > + struct iovec *iovec = ivec->iov.iovec; > + > + iovec[ret].iov_len = min(len -...

...ze)) { + if (unlikely(ret >= ivec->count)) { ret = -ENOBUFS; break; } @@ -1124,10 +1132,22 @@ static int iotlb_translate(const struct vringh *vrh, } size = map->size - addr + map->start; - pa = map->addr + addr - map->start; - pfn = pa >> PAGE_SHIFT; - bvec_set_page(&iov[ret], pfn_to_page(pfn), min(len - s, size), - pa & (PAGE_SIZE - 1)); + if (ivec->is_iovec) { + struct iovec *iovec = ivec->iov.iovec; + + iovec[ret].iov_len = min(len - s, size); + iovec[ret].iov_base = (void __user *)(unsigned long) + (map->addr + ad...

This series adds support for the use of user virtual addresses in the vDPA simulator devices. The main reason for this change is to lift the pinning of all guest memory. Especially with virtio devices implemented in software. The next step would be to generalize the code in vdpa-sim to allow the implementation of in-kernel software devices. Similar to vhost, but using vDPA so we can reuse the

Now that ->sendpage() has been removed, MSG_SENDPAGE_NOTLAST can be cleaned up. Things were converted to use MSG_MORE instead, but the protocol sendpage stubs still convert MSG_SENDPAGE_NOTLAST to MSG_MORE, which is now unnecessary. Signed-off-by: David Howells <dhowells at redhat.com> cc: "David S. Miller" <davem at davemloft.net> cc: Eric Dumazet <edumazet at

This series adds support for the use of user virtual addresses in the vDPA simulator devices. The main reason for this change is to lift the pinning of all guest memory. Especially with virtio devices implemented in software. The next step would be to generalize the code in vdpa-sim to allow the implementation of in-kernel software devices. Similar to vhost, but using vDPA so we can reuse the