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Wed, 11 Nov 2026 20:32:07 +0000 (UTC) Received: from dhowells-thinkpadp1gen8.rmtgb.csb (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 42C8D30000E5; Wed, 11 Nov 2026 20:32:03 +0000 (UTC) From: David Howells To: Christian Brauner Cc: David Howells , Paulo Alcantara , Matthew Wilcox , Namjae Jeon , Marc Dionne , Stefan Metzmacher , Eric Van Hensbergen , Dominique Martinet , Ilya Dryomov , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Shyam Prasad N , Tom Talpey , Christoph Hellwig Subject: [PATCH v17 15/17] smbdirect: Remove support for ITER_FOLIOQ from smbdirect_map_sges_from_iter() Date: Wed, 11 Nov 2026 20:30:28 +0000 Message-ID: <20261111203034.2126314-16-dhowells@redhat.com> In-Reply-To: <20261111203034.2126314-1-dhowells@redhat.com> References: <20261111203034.2126314-1-dhowells@redhat.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 netfslib now only presents an bvecq queue and an associated ITER_BVECQ iterator to the filesystem, so it isn't going to see the ITER_FOLIOQ iterator. So remove that code. Netfslib also won't supply ITER_BVEC/KVEC iterators, though smbdirect might; further in future, it won't supply iterators at all, but rather a bvecq slice (that can be used to construct an iterator). Signed-off-by: David Howells Acked-by: Stefan Metzmacher Reviewed-by: Paulo Alcantara cc: Namjae Jeon cc: Stefan Metzmacher cc: Shyam Prasad N cc: Tom Talpey cc: Christoph Hellwig cc: Matthew Wilcox cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- fs/smb/smbdirect/connection.c | 68 ----------------------------------- 1 file changed, 68 deletions(-) diff --git a/fs/smb/smbdirect/connection.c b/fs/smb/smbdirect/connection.c index b13bd07ffb8c..210e53495fe8 100644 --- a/fs/smb/smbdirect/connection.c +++ b/fs/smb/smbdirect/connection.c @@ -6,7 +6,6 @@ #include "internal.h" #include -#include struct smbdirect_map_sges { struct ib_sge *sge; @@ -2140,70 +2139,6 @@ static ssize_t smbdirect_map_sges_from_kvec(struct iov_iter *iter, return ret; } -/* - * Extract folio fragments from a FOLIOQ-class iterator and add them to an - * ib_sge list. The folios are not pinned. - */ -static ssize_t smbdirect_map_sges_from_folioq(struct iov_iter *iter, - struct smbdirect_map_sges *state, - ssize_t maxsize) -{ - const struct folio_queue *folioq = iter->folioq; - unsigned int slot = iter->folioq_slot; - ssize_t ret = 0; - size_t offset = iter->iov_offset; - - if (WARN_ON_ONCE(!folioq)) - return -EIO; - - if (slot >= folioq_nr_slots(folioq)) { - folioq = folioq->next; - if (WARN_ON_ONCE(!folioq)) - return -EIO; - slot = 0; - } - - do { - struct folio *folio = folioq_folio(folioq, slot); - size_t fsize = folioq_folio_size(folioq, slot); - - if (offset < fsize) { - size_t part = umin(maxsize, fsize - offset); - bool ok; - - ok = smbdirect_map_sges_single_page(state, - folio_page(folio, 0), - offset, - part); - if (!ok) - return -EIO; - - offset += part; - ret += part; - maxsize -= part; - } - - if (offset >= fsize) { - offset = 0; - slot++; - if (slot >= folioq_nr_slots(folioq)) { - if (!folioq->next) { - WARN_ON_ONCE(ret < iter->count); - break; - } - folioq = folioq->next; - slot = 0; - } - } - } while (state->num_sge < state->max_sge && maxsize > 0); - - iter->folioq = folioq; - iter->folioq_slot = slot; - iter->iov_offset = offset; - iter->count -= ret; - return ret; -} - /* * Extract page fragments from up to the given amount of the source iterator * and build up an ib_sge list that refers to all of those bits. The ib_sge list @@ -2234,9 +2169,6 @@ static ssize_t smbdirect_map_sges_from_iter(struct iov_iter *iter, size_t len, case ITER_KVEC: ret = smbdirect_map_sges_from_kvec(iter, state, len); break; - case ITER_FOLIOQ: - ret = smbdirect_map_sges_from_folioq(iter, state, len); - break; default: WARN_ONCE(1, "iov_iter_type[%u]\n", iov_iter_type(iter)); return -EIO;