proc: return -ENOMEM when inode allocation failed
If proc_get_inode() returns NULL then presumably it encountered memory exhaustion. proc_lookup_de() should return -ENOMEM in this case, not -EINVAL. Signed-off-by: yan <clouds.yan@gmail.com> Cc: Ryan Mallon <rmallon@gmail.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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