diff options
| author | David Howells <dhowells@redhat.com> | 2020-02-06 14:22:28 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2021-04-23 10:17:26 +0100 |
| commit | f105da1a798f23f386ac5c4c2d776d57088bec32 (patch) | |
| tree | 6cf6f13dfafcadffda00a6e4f52da5b4037311b8 /fs/afs/rxrpc.c | |
| parent | c69bf479baa614f5e80a1ded355e752e15a52b72 (diff) | |
| download | linux-f105da1a798f23f386ac5c4c2d776d57088bec32.tar.bz2 | |
afs: Don't truncate iter during data fetch
Don't truncate the iterator to correspond to the actual data size when
fetching the data from the server - rather, pass the length we want to read
to rxrpc.
This will allow the clear-after-read code in future to simply clear the
remaining iterator capacity rather than having to reinitialise the
iterator.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-By: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/158861249201.340223.13035445866976590375.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/159465825061.1377938.14403904452300909320.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/160588531418.3465195.10712005940763063144.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/161118148567.1232039.13380313332292947956.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/161161044610.2537118.17908520793806837792.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/161340407907.1303470.6501394859511712746.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/161539551721.286939.14655713136572200716.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/161653807790.2770958.14034599989374173734.stgit@warthog.procyon.org.uk/ # v5
Link: https://lore.kernel.org/r/161789090823.6155.15673999934535049102.stgit@warthog.procyon.org.uk/ # v6
Diffstat (limited to 'fs/afs/rxrpc.c')
| -rw-r--r-- | fs/afs/rxrpc.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 8be709cb8542..0ec38b758f29 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -363,6 +363,7 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp) struct rxrpc_call *rxcall; struct msghdr msg; struct kvec iov[1]; + size_t len; s64 tx_total_len; int ret; @@ -466,9 +467,10 @@ error_do_abort: rxrpc_kernel_abort_call(call->net->socket, rxcall, RX_USER_ABORT, ret, "KSD"); } else { + len = 0; iov_iter_kvec(&msg.msg_iter, READ, NULL, 0, 0); rxrpc_kernel_recv_data(call->net->socket, rxcall, - &msg.msg_iter, false, + &msg.msg_iter, &len, false, &call->abort_code, &call->service_id); ac->abort_code = call->abort_code; ac->responded = true; @@ -504,6 +506,7 @@ error_kill_call: static void afs_deliver_to_call(struct afs_call *call) { enum afs_call_state state; + size_t len; u32 abort_code, remote_abort = 0; int ret; @@ -516,10 +519,11 @@ static void afs_deliver_to_call(struct afs_call *call) state == AFS_CALL_SV_AWAIT_ACK ) { if (state == AFS_CALL_SV_AWAIT_ACK) { + len = 0; iov_iter_kvec(&call->def_iter, READ, NULL, 0, 0); ret = rxrpc_kernel_recv_data(call->net->socket, call->rxcall, &call->def_iter, - false, &remote_abort, + &len, false, &remote_abort, &call->service_id); trace_afs_receive_data(call, &call->def_iter, false, ret); @@ -929,10 +933,11 @@ int afs_extract_data(struct afs_call *call, bool want_more) u32 remote_abort = 0; int ret; - _enter("{%s,%zu},%d", call->type->name, iov_iter_count(iter), want_more); + _enter("{%s,%zu,%zu},%d", + call->type->name, call->iov_len, iov_iter_count(iter), want_more); ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, iter, - want_more, &remote_abort, + &call->iov_len, want_more, &remote_abort, &call->service_id); if (ret == 0 || ret == -EAGAIN) return ret; |