slob: fix free block merging at head of subpage
authorMatt Mackall <mpm@selenic.com>
Tue, 5 Feb 2008 06:29:37 +0000 (22:29 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 5 Feb 2008 17:44:19 +0000 (09:44 -0800)
commit679299b32dbf9bac4bdaedc850fb95d0f81b4963
tree1dc7edbdaf67611958273345b24d271f188371a8
parent8bc3be2751b4f74ab90a446da1912fd8204d53f7
slob: fix free block merging at head of subpage

We weren't merging freed blocks at the beginning of the free list.  Fixing
this showed a 2.5% efficiency improvement in a userspace test harness.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/slob.c