Revision 494de90098784b8e2797598cefdd34188884ec2e authored by Mel Gorman on 03 July 2008, 04:27:51 UTC, committed by Linus Torvalds on 03 July 2008, 16:22:59 UTC
The non-NUMA case of build_zonelist_cache() would initialize the zlcache_ptr for both node_zonelists[] to NULL. Which is problematic, since non-NUMA only has a single node_zonelists[] entry, and trying to zero the non-existent second one just overwrote the nr_zones field instead. As kswapd uses this value to determine what reclaim work is necessary, the result is that kswapd never reclaims. This causes processes to stall frequently in low-memory situations as they always direct reclaim. This patch initialises zlcache_ptr correctly. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Tested-by: Dan Williams <dan.j.williams@intel.com> [ Simplified patch a bit ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| README.txt | -rw-r--r-- | 1.2 KB |
| atomic-ops.txt | -rw-r--r-- | 4.5 KB |
| booting.txt | -rw-r--r-- | 5.6 KB |
| clock.txt | -rw-r--r-- | 2.4 KB |
| configuring.txt | -rw-r--r-- | 4.0 KB |
| features.txt | -rw-r--r-- | 10.6 KB |
| gdbinit | -rw-r--r-- | 11.4 KB |
| gdbstub.txt | -rw-r--r-- | 4.7 KB |
| kernel-ABI.txt | -rw-r--r-- | 9.2 KB |
| mmu-layout.txt | -rw-r--r-- | 13.9 KB |
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