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    CIFS: Add rwpidforward mount option · d4ffff1f
    Pavel Shilovsky 提交于
    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: NPavel Shilovsky <piastry@etersoft.ru>
    Signed-off-by: NSteve French <sfrench@us.ibm.com>
    d4ffff1f
file.c 63.0 KB