• Jonathan Corbet's avatar
    Use f_lock to protect f_flags · db1dd4d3
    Jonathan Corbet authored
    Traditionally, changes to struct file->f_flags have been done under BKL
    protection, or with no protection at all.  This patch causes all f_flags
    changes after file open/creation time to be done under protection of
    f_lock.  This allows the removal of some BKL usage and fixes a number of
    longstanding (if microscopic) races.
    Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
    Cc: Al Viro <viro@ZenIV.linux.org.uk>
    Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
ioctl.c 13.9 KB