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vfs: make listxattr retry once on ESTALE error
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -576,12 +576,17 @@ SYSCALL_DEFINE3(listxattr, const char __user *, pathname, char __user *, list,
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{
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struct path path;
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ssize_t error;
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error = user_path(pathname, &path);
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unsigned int lookup_flags = LOOKUP_FOLLOW;
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retry:
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error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
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if (error)
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return error;
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error = listxattr(path.dentry, list, size);
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path_put(&path);
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if (retry_estale(error, lookup_flags)) {
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lookup_flags |= LOOKUP_REVAL;
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goto retry;
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}
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return error;
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}
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