From aa91c4d898c062804f4d0a5da6d8ab013cd0e868 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 31 Jul 2012 16:41:37 -0700 Subject: [PATCH] mm: make vb_alloc() more foolproof If someone calls vb_alloc() (or vm_map_ram() for that matter) to allocate 0 bytes (0 pages), get_order() returns BITS_PER_LONG - PAGE_CACHE_SHIFT and interesting stuff happens. So make debugging such problems easier and warn about 0-size allocation. [akpm@linux-foundation.org: use WARN_ON-return-value feature] Signed-off-by: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-format-patch failed