diff options
| author | David Howells <dhowells@redhat.com> | 2023-01-16 14:19:29 +0000 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2023-02-20 18:36:02 -0600 |
| commit | e7388b8a1a5bdf47a9a46803a5686387c1ce060d (patch) | |
| tree | 4c2ef76d38bbf7d0a37cf898393fb4b7b702b7b8 /fs/cifs | |
| parent | 607aea3cc2a8f46d24c78eb4efcc511af1c2f74d (diff) | |
cifs: DIO to/from KVEC-type iterators should now work
DIO to/from KVEC-type iterators should now work as the iterator is passed
down to the socket in non-RDMA/non-crypto mode and in RDMA or crypto mode
care is taken to handle vmap/vmalloc correctly and not take page refs when
building a scatterlist.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Tom Talpey <tom@talpey.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/file.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index bd4ee2cdf3d4..58801d39213a 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3549,16 +3549,6 @@ static ssize_t __cifs_writev( struct cifs_aio_ctx *ctx; int rc; - /* - * iov_iter_get_pages_alloc doesn't work with ITER_KVEC. - * In this case, fall back to non-direct write function. - * this could be improved by getting pages directly in ITER_KVEC - */ - if (direct && iov_iter_is_kvec(from)) { - cifs_dbg(FYI, "use non-direct cifs_writev for kvec I/O\n"); - direct = false; - } - rc = generic_write_checks(iocb, from); if (rc <= 0) return rc; @@ -4092,16 +4082,6 @@ static ssize_t __cifs_readv( loff_t offset = iocb->ki_pos; struct cifs_aio_ctx *ctx; - /* - * iov_iter_get_pages_alloc() doesn't work with ITER_KVEC, - * fall back to data copy read path - * this could be improved by getting pages directly in ITER_KVEC - */ - if (direct && iov_iter_is_kvec(to)) { - cifs_dbg(FYI, "use non-direct cifs_user_readv for kvec I/O\n"); - direct = false; - } - len = iov_iter_count(to); if (!len) return 0; |