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debugfs: unproxify files created through debugfs_create_u32_array()

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The struct file_operations u32_array_fops associated with files created
through debugfs_create_u32_array() has been lifetime aware already:
everything needed for subsequent operation is copied to a ->f_private
buffer at file opening time in u32_array_open(). Now, ->open() is always
protected against file removal issues by the debugfs core.

There is no need for the debugfs core to wrap the u32_array_fops
with a file lifetime managing proxy.

Make debugfs_create_u32_array() create its files in non-proxying operation
mode by means of debugfs_create_file_unsafe().

Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nicolai Stange 2016-03-22 14:11:20 +01:00 committed by Greg Kroah-Hartman
parent 83b711cbf4
commit c4a74f63df
1 changed files with 2 additions and 1 deletions
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3
fs/debugfs/file.c
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@ -992,7 +992,8 @@ struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
data->array = array; data->array = array;
data->elements = elements; data->elements = elements;
return debugfs_create_file(name, mode, parent, data, &u32_array_fops); return debugfs_create_file_unsafe(name, mode, parent, data,
&u32_array_fops);
} }
EXPORT_SYMBOL_GPL(debugfs_create_u32_array); EXPORT_SYMBOL_GPL(debugfs_create_u32_array);