Al Viro 2fbe8c8ad1 get rid of useless dget_parent() in fs/btrfs/ioctl.c
both callers there have dentry->d_parent stabilized by the fact that
their caller had obtained dentry from lookup_one_len() and had not
dropped ->i_mutex on parent since then.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20 20:48:00 -04:00
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