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gfs2: use is_subdir()
... instead of reimplementing it with misguiding name (is_ancestor(x, y) would normally imply "x is an ancestor of y", not the other way round). With races, while we are at it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
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@ -1065,16 +1065,6 @@ static int gfs2_drop_inode(struct inode *inode)
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return generic_drop_inode(inode);
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}
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static int is_ancestor(const struct dentry *d1, const struct dentry *d2)
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{
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do {
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if (d1 == d2)
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return 1;
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d1 = d1->d_parent;
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} while (!IS_ROOT(d1));
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return 0;
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}
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/**
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* gfs2_show_options - Show mount options for /proc/mounts
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* @s: seq_file structure
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@ -1096,7 +1086,7 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root)
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statfs_slow = sdp->sd_tune.gt_statfs_slow;
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spin_unlock(&sdp->sd_tune.gt_spin);
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if (is_ancestor(root, sdp->sd_master_dir))
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if (is_subdir(root, sdp->sd_master_dir))
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seq_puts(s, ",meta");
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if (args->ar_lockproto[0])
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seq_show_option(s, "lockproto", args->ar_lockproto);
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