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| author | Pavel Shilovsky <piastry@etersoft.ru> | 2011-05-26 06:02:00 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-05-27 03:57:16 +0000 |
| commit | d4ffff1fa9695c5b5c0bf337e208d8833b88ff2d (patch) | |
| tree | acd4b6cfa7962a1cee7e9c81f11bd9ccb0d3ff24 /fs/cifs/cifsproto.h | |
| parent | 25c7f41e9234f60af30e086278f1de7974f8816f (diff) | |
| download | lwn-d4ffff1fa9695c5b5c0bf337e208d8833b88ff2d.tar.gz lwn-d4ffff1fa9695c5b5c0bf337e208d8833b88ff2d.zip | |
CIFS: Add rwpidforward mount option
Add rwpidforward mount option that switches on a mode when we forward
pid of a process who opened a file to any read and write operation.
This can prevent applications like WINE from failing on read or write
operation on a previously locked file region from the same netfd from
another process if we use mandatory brlock style.
It is actual for WINE because during a run of WINE program two processes
work on the same netfd - share the same file struct between several VFS
fds:
1) WINE-server does open and lock;
2) WINE-application does read and write.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index e41f6071cdd2..17063455918f 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -345,9 +345,8 @@ extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, extern int CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, const int smb_file_id); -extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, - const int netfid, unsigned int count, - const __u64 lseek, unsigned int *nbytes, char **buf, +extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, + unsigned int *nbytes, char **buf, int *return_buf_type); extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, const char *buf, |