diff options
| author | Pavel Shilovsky <pshilov@microsoft.com> | 2017-04-25 11:52:29 -0700 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2017-05-02 14:57:34 -0500 |
| commit | ccf7f4088af2dd6733bfcbc40b488e2484345ae5 (patch) | |
| tree | e36e26b596216f44e08266913ae9fd5d7a0ebc64 /fs/cifs/cifsglob.h | |
| parent | 29bb3158cf6a5ad7b3521d1229552f375107a58c (diff) | |
CIFS: Add asynchronous context to support kernel AIO
Currently the code doesn't recognize asynchronous calls passed
by io_submit() and processes all calls synchronously. This is not
what kernel AIO expects. This patch introduces a new async context
that keeps track of all issued i/o requests and moves a response
collecting procedure to a separate thread. This allows to return
to a caller immediately for async calls and call iocb->ki_complete()
once all requests are completed. For sync calls the current thread
simply waits until all requests are completed.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 37f5a41cc50c..bb412261d601 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1115,6 +1115,22 @@ struct cifs_io_parms { struct cifs_tcon *tcon; }; +struct cifs_aio_ctx { + struct kref refcount; + struct list_head list; + struct mutex aio_mutex; + struct completion done; + struct iov_iter iter; + struct kiocb *iocb; + struct cifsFileInfo *cfile; + struct bio_vec *bv; + unsigned int npages; + ssize_t rc; + unsigned int len; + unsigned int total_len; + bool should_dirty; +}; + struct cifs_readdata; /* asynchronous read support */ |