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| author |   Paul Jackson <pj@sgi.com> | 2006-03-24 03:16:12 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-24 07:33:24 -0800 |
| commit | b2455396be35383c4eebc6745cc718b1dd9e23df (patch) | |
| tree | 9ed4d43f1ca944c23372fad6554508f1747f5e2d /include | |
| parent | [PATCH] cpuset: don't need to mark cpuset_mems_generation atomic (diff) | |
| download | linux-dev-b2455396be35383c4eebc6745cc718b1dd9e23df.tar.xz linux-dev-b2455396be35383c4eebc6745cc718b1dd9e23df.zip | |
[PATCH] cpuset: memory_spread_slab drop useless PF_SPREAD_PAGE check
The hook in the slab cache allocation path to handle cpuset memory
spreading for tasks in cpusets with 'memory_spread_slab' enabled has a
modest performance bug. The hook calls into the memory spreading handler
alternate_node_alloc() if either of 'memory_spread_slab' or
'memory_spread_page' is enabled, even though the handler does nothing
(albeit harmlessly) for the page case
Fix - drop PF_SPREAD_PAGE from the set of flag bits that are used to
trigger a call to alternate_node_alloc().
The page case is handled by separate hooks -- see the calls conditioned on
cpuset_do_page_mem_spread() in mm/filemap.c
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions