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get rid of useless dget_parent() in fs/btrfs/ioctl.c
authorAl Viro <viro@zeniv.linux.org.uk>
Sun, 17 Jul 2011 01:38:06 +0000 (21:38 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Thu, 21 Jul 2011 00:48:00 +0000 (20:48 -0400)
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>

No differences found
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