tree 204948267936e9a3f1c430d970c9a68f1583b55d
parent 3d8d996e0ca5b4093203d3f050b0f70b5c949ae8
author Masami Hiramatsu <mhiramat@redhat.com> 1209374067 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1209398312 -0700

list.h: add list_is_singular()

Add list_is_singular() to check a list has just one entry.

list_is_singular() is useful to check whether a list_head which have been
temporarily allocated for listing objects can be released or not.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>