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NFSv4: Don't attempt an atomic open if the file is a mountpoint
Fix https://bugzilla.kernel.org/show_bug.cgi?id=15789 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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@ -1050,7 +1050,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
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struct inode *dir;
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int openflags, ret = 0;
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if (!is_atomic_open(nd))
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if (!is_atomic_open(nd) || d_mountpoint(dentry))
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goto no_open;
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parent = dget_parent(dentry);
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dir = parent->d_inode;
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