GFS2: Add Orlov allocator
Just like ext3, this works on the root directory and any directory
with the +T flag set. Also, just like ext3, any subdirectory created
in one of the just mentioned cases will be allocated to a random
resource group (GFS2 equivalent of a block group).
If you are creating a set of directories, each of which will contain a
job running on a different node, then by setting +T on the parent
directory before creating the subdirectories, each will land up in a
different resource group, and thus resource group contention between
nodes will be kept to a minimum.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index c5af8e1..6bbf64f 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -816,7 +816,7 @@
blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3;
reserved = 1 + (nalloc * (data_blocks + ind_blocks));
- error = gfs2_inplace_reserve(ip, reserved);
+ error = gfs2_inplace_reserve(ip, reserved, 0);
if (error)
goto out_alloc;
@@ -1605,7 +1605,7 @@
gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
&data_blocks, &ind_blocks);
blocks = 1 + data_blocks + ind_blocks;
- error = gfs2_inplace_reserve(ip, blocks);
+ error = gfs2_inplace_reserve(ip, blocks, 0);
if (error)
goto out_i;
blocks += gfs2_rg_blocks(ip, blocks);