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| author | Jeff Layton <jlayton@redhat.com> | 2011-05-19 16:22:56 -0400 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-05-25 20:38:33 +0000 |
| commit | c28c89fc43e3f81436efc4748837534d4d46f90c (patch) | |
| tree | d7eec9d8aabf41d38dcecab0de6f91b6a8a037c6 /fs/cifs/cifsproto.h | |
| parent | f7910cbd9fa319ee4501074f1f3b5ce23c4b1518 (diff) | |
| download | lwn-c28c89fc43e3f81436efc4748837534d4d46f90c.tar.gz lwn-c28c89fc43e3f81436efc4748837534d4d46f90c.zip | |
cifs: add cifs_async_writev
Add the ability for CIFS to do an asynchronous write. The kernel will
set the frame up as it would for a "normal" SMBWrite2 request, and use
cifs_call_async to send it. The mid callback will then be configured to
handle the result.
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index fdc0dc2c083c..8aea8850ffee 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -442,4 +442,22 @@ extern int mdfour(unsigned char *, unsigned char *, int); extern int E_md4hash(const unsigned char *passwd, unsigned char *p16); extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24); + +/* asynchronous write support */ +struct cifs_writedata { + struct kref refcount; + enum writeback_sync_modes sync_mode; + struct work_struct work; + struct cifsFileInfo *cfile; + __u64 offset; + unsigned int bytes; + int result; + unsigned int nr_pages; + struct page *pages[1]; +}; + +int cifs_async_writev(struct cifs_writedata *wdata); +struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages); +void cifs_writedata_release(struct kref *refcount); + #endif /* _CIFSPROTO_H */ |