diff options
| author | Long Li <longli@microsoft.com> | 2018-10-31 22:13:09 +0000 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-11-02 14:09:41 -0500 |
| commit | 6e6e2b86c29c6fcfa16ad9fdc7ea32027bea5d73 (patch) | |
| tree | 1c1c63c0f8191fe88291fe6de8acd341e68bc608 /fs/cifs/cifsglob.h | |
| parent | 0df444a00f32a3ab4d37c3c101bb960ee38a9617 (diff) | |
CIFS: Add support for direct I/O read
With direct I/O read, we transfer the data directly from transport layer to
the user data buffer.
Change in v3: add support for kernel AIO
Change in v4:
Refactor common read code to __cifs_readv for direct and non-direct I/O.
Retry on direct I/O failure.
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index d7c0443d47a4..38ab0fca49e1 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1186,6 +1186,11 @@ struct cifs_aio_ctx { unsigned int len; unsigned int total_len; bool should_dirty; + /* + * Indicates if this aio_ctx is for direct_io, + * If yes, iter is a copy of the user passed iov_iter + */ + bool direct_io; }; struct cifs_readdata; |