tree 08917a620b6d15076223c1ef75996a1a76a13abd
parent fcb94f72d3e0f4f34b326c2986da8e5996daf72c
author Dave Chinner <dchinner@redhat.com> 1310098479 +1000
committer Al Viro <viro@zeniv.linux.org.uk> 1311140675 -0400

inode: Make unused inode LRU per superblock

The inode unused list is currently a global LRU. This does not match
the other global filesystem cache - the dentry cache - which uses
per-superblock LRU lists. Hence we have related filesystem object
types using different LRU reclaimation schemes.

To enable a per-superblock filesystem cache shrinker, both of these
caches need to have per-sb unused object LRU lists. Hence this patch
converts the global inode LRU to per-sb LRUs.

The patch only does rudimentary per-sb propotioning in the shrinker
infrastructure, as this gets removed when the per-sb shrinker
callouts are introduced later on.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>