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    Export 'get_pipe_info()' to other users · c66fb347
    Linus Torvalds 提交于
    And in particular, use it in 'pipe_fcntl()'.
    
    The other pipe functions do not need to use the 'careful' version, since
    they are only ever called for things that are already known to be pipes.
    
    The normal read/write/ioctl functions are called through the file
    operations structures, so if a file isn't a pipe, they'd never get
    called.  But pipe_fcntl() is special, and called directly from the
    generic fcntl code, and needs to use the same careful function that the
    splice code is using.
    
    Cc: Jens Axboe <jaxboe@fusionio.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Cc: Dave Jones <davej@redhat.com>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    c66fb347
pipe.c 27.8 KB