kernfs: add kernfs_open_file->priv
Add a private data field to be used by kernfs file operations. This generally makes sense and will be used by cgroup. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -146,6 +146,7 @@ struct kernfs_open_file {
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/* published fields */
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/* published fields */
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struct kernfs_node *kn;
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struct kernfs_node *kn;
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struct file *file;
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struct file *file;
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void *priv;
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/* private fields, do not use outside kernfs proper */
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/* private fields, do not use outside kernfs proper */
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struct mutex mutex;
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struct mutex mutex;
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