From: Dave Chinner Date: Sat, 23 Oct 2010 09:03:02 +0000 (-0400) Subject: fs: Convert nr_inodes and nr_unused to per-cpu counters X-Git-Tag: v2.6.37-rc1~94^2~25 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cffbc8aa334f55c9ed42d25202eb3ebf3a97c195;p=pandora-kernel.git fs: Convert nr_inodes and nr_unused to per-cpu counters The number of inodes allocated does not need to be tied to the addition or removal of an inode to/from a list. If we are not tied to a list lock, we could update the counters when inodes are initialised or destroyed, but to do that we need to convert the counters to be per-cpu (i.e. independent of a lock). This means that we have the freedom to change the list/locking implementation without needing to care about the counters. Based on a patch originally from Eric Dumazet. [AV: cleaned up a bit, fixed build breakage on weird configs Signed-off-by: Dave Chinner Reviewed-by: Christoph Hellwig Signed-off-by: Al Viro --- Reading git-diff-tree failed