tree 8cabf096e8a485ac623883ad57064ca1d18f253b
parent cbf8ae32f66a9ceb8907ad9e16663c2a29e48990
author Joern Engel <joern@logfs.org> 1339104074 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1339105435 -0700

btree: catch NULL value before it does harm

Storing NULL values in the btree is illegal and can lead to memory
corruption and possible other fun as well.  Catch it on insert, instead
of waiting for the inevitable.

Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>