Commit fa3759cc authored Oct 09, 2014 by Sasha Levin Committed by Linus Torvalds Oct 09, 2014

mm: introduce VM_BUG_ON_VMA

Very similar to VM_BUG_ON_PAGE but dumps VMA information instead.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michel Lespinasse <walken@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 0bf55139

include/linux/mmdebug.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -20,12 +20,20 @@ void dump_vma(const struct vm_area_struct *vma);
		BUG(); \
		} \
		} while (0)
		#define VM_BUG_ON_VMA(cond, vma) \
		do { \
		if (unlikely(cond)) { \
		dump_vma(vma); \
		BUG(); \
		} \
		} while (0)
		#define VM_WARN_ON(cond) WARN_ON(cond)
		#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
		#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
		#else
		#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
		#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
		#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)
		#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
		#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
		#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)

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