tree 20b1e8e26fcb2bbe09b9589ed38183f6b0f6a4d4
parent 4513899092b3254b3539f92a65d2839afa1d50f6
author Steven Whitehouse <swhiteho@redhat.com> 1359750963 +0000
committer Steven Whitehouse <swhiteho@redhat.com> 1359750963 +0000

GFS2: Split glock lru processing into two parts

The intent here is to split the processing of the glock lru
list into two parts, so that the selection of glocks and the
disposal are separate functions. The plan is then, that further
updates can then be made to these functions in the future
to improve the selection of glocks and also the efficiency of
glock disposal.

The new feature which this patch brings is sorting the
glocks to be disposed of into glock number (and thus also
disk block number) order. Not all glocks will need i/o in
order to dispose of them, but some will, and at least we'll
generate mostly disk block order i/o now.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>