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d_add_ci(): make sure we don't miss d_lookup_done()
All callers of d_alloc_parallel() must make sure that resulting in-lookup dentry (if any) will encounter __d_lookup_done() before the final dput(). d_add_ci() might end up creating in-lookup dentries; they are fed to d_splice_alias(), which will normally make sure they meet __d_lookup_done(). However, it is possible to end up with d_splice_alias() failing with ERR_PTR(-ELOOP) without having done so. It takes a corrupted ntfs or case-insensitive xfs image, but neither should end up with memory corruption... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -2240,6 +2240,7 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode,
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}
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res = d_splice_alias(inode, found);
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if (res) {
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d_lookup_done(found);
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dput(found);
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return res;
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}
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