Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
blk-mq-debugfs: use debugfs_get_aux()
instead of manually stashing the data pointer into parent directory inode's
->i_private, just pass it to debugfs_create_file_aux() so that it can
be extracted without that insane chasing through ->d_parent.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lore.kernel.org/r/20250702212818.GJ3406663@ZenIV
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Al Viro
and committed by
Greg Kroah-Hartman
4c0727e5
9d3b96be
+5
-7
+5
-7
block/blk-mq-debugfs.c
+5
-7
block/blk-mq-debugfs.c
···
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static int blk_mq_debugfs_show(struct seq_file *m, void *v)
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{
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const struct blk_mq_debugfs_attr *attr = m->private;
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-
void *data = d_inode(m->file->f_path.dentry->d_parent)->i_private;
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+
void *data = debugfs_get_aux(m->file);
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return attr->show(data, m);
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}
···
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{
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struct seq_file *m = file->private_data;
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const struct blk_mq_debugfs_attr *attr = m->private;
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-
void *data = d_inode(file->f_path.dentry->d_parent)->i_private;
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+
void *data = debugfs_get_aux(file);
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/*
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* Attributes that only implement .seq_ops are read-only and 'attr' is
···
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static int blk_mq_debugfs_open(struct inode *inode, struct file *file)
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{
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const struct blk_mq_debugfs_attr *attr = inode->i_private;
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-
void *data = d_inode(file->f_path.dentry->d_parent)->i_private;
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+
void *data = debugfs_get_aux(file);
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struct seq_file *m;
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int ret;
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···
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if (IS_ERR_OR_NULL(parent))
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return;
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-
d_inode(parent)->i_private = data;
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-
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for (; attr->name; attr++)
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-
debugfs_create_file(attr->name, attr->mode, parent,
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-
(void *)attr, &blk_mq_debugfs_fops);
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+
debugfs_create_file_aux(attr->name, attr->mode, parent,
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+
(void *)attr, data, &blk_mq_debugfs_fops);
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}
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void blk_mq_debugfs_register(struct request_queue *q)