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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 08/13] afs: Note the amount transferred in fetch-data delivery From: David Howells To: Trond Myklebust , Anna Schumaker , Steve French , Alexander Viro , Matthew Wilcox Cc: Jeff Layton , Dave Wysochanski , dhowells@redhat.com, linux-cachefs@redhat.com, linux-afs@lists.infradead.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 13 Jul 2020 17:38:32 +0100 Message-ID: <159465831290.1377938.10075677476527399814.stgit@warthog.procyon.org.uk> In-Reply-To: <159465821598.1377938.2046362270225008168.stgit@warthog.procyon.org.uk> References: <159465821598.1377938.2046362270225008168.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.22 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Sender: ceph-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Note the amount of data transferred in the fscache request op structure in the delivery/decode routines for the various FetchData operations. Also, we need to exclude the excess from this value and then we need to use this in directory read rather than actual_len. Signed-off-by: David Howells --- fs/afs/dir.c | 9 ++++----- fs/afs/fsclient.c | 5 +++++ fs/afs/yfsclient.c | 5 +++++ 3 files changed, 14 insertions(+), 5 deletions(-) diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 9d47df15c790..03ef09330d10 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -209,9 +209,8 @@ static void afs_dir_dump(struct afs_vnode *dvnode, struct afs_read *req) pr_warn("DIR %llx:%llx f=%llx l=%llx al=%llx\n", dvnode->fid.vid, dvnode->fid.vnode, req->file_size, req->cache.len, req->actual_len); - pr_warn("DIR %llx %x %zx %zx\n", - req->cache.pos, req->cache.nr_pages, - req->iter->iov_offset, iov_iter_count(req->iter)); + pr_warn("DIR %llx %x %llx\n", + req->cache.pos, req->cache.nr_pages, req->cache.transferred); xas_for_each(&xas, page, last) { if (xas_retry(&xas, page)) @@ -321,7 +320,7 @@ static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key) nr_pages = (i_size + PAGE_SIZE - 1) / PAGE_SIZE; - req->actual_len = i_size; /* May change */ + req->cache.transferred = i_size; /* May change */ req->cache.len = nr_pages * PAGE_SIZE; /* We can ask for more than there is */ req->data_version = dvnode->status.data_version; /* May change */ iov_iter_mapping(&req->def_iter, READ, dvnode->vfs_inode.i_mapping, @@ -546,7 +545,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx, /* walk through the blocks in sequence */ ret = 0; - while (ctx->pos < req->actual_len) { + while (ctx->pos < req->cache.transferred) { blkoff = ctx->pos & ~(sizeof(union afs_xdr_dir_block) - 1); /* Fetch the appropriate page from the directory and re-add it diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index d6a8066e666d..e729a19f28c5 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -393,6 +393,11 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) break; } + /* Pass the call's ref on the read request descriptor to the completion + * handler. + */ + req->cache.transferred = min(req->actual_len, req->cache.len); + set_bit(FSCACHE_IO_DATA_FROM_SERVER, &req->cache.flags); if (req->cache.io_done) req->cache.io_done(&req->cache); diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c index 30621f4fffc0..4ead0c1f9014 100644 --- a/fs/afs/yfsclient.c +++ b/fs/afs/yfsclient.c @@ -450,6 +450,11 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) break; } + /* Pass the call's ref on the read request descriptor to the completion + * handler. + */ + req->cache.transferred = min(req->actual_len, req->cache.len); + set_bit(FSCACHE_IO_DATA_FROM_SERVER, &req->cache.flags); if (req->cache.io_done) req->cache.io_done(&req->cache);