https://github.com/torvalds/linux
Revision f9e35b3b41f47c4e17d8132edbcab305a6aaa4b0 authored by Mel Gorman on 15 June 2011, 22:08:52 UTC, committed by Linus Torvalds on 16 June 2011, 03:04:02 UTC
Asynchronous compaction is used when promoting to huge pages. This is all very nice but if there are a number of processes in compacting memory, a large number of pages can be isolated. An "asynchronous" process can stall for long periods of time as a result with a user reporting that firefox can stall for 10s of seconds. This patch aborts asynchronous compaction if too many pages are isolated as it's better to fail a hugepage promotion than stall a process. [minchan.kim@gmail.com: return COMPACT_PARTIAL for abort] Reported-and-tested-by: Ury Stankevich <urykhy@gmail.com> Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent d179e84
Tip revision: f9e35b3b41f47c4e17d8132edbcab305a6aaa4b0 authored by Mel Gorman on 15 June 2011, 22:08:52 UTC
mm: compaction: abort compaction if too many pages are isolated and caller is asynchronous V2
mm: compaction: abort compaction if too many pages are isolated and caller is asynchronous V2
Tip revision: f9e35b3
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| .gitignore | -rw-r--r-- | 966 bytes |
| .mailmap | -rw-r--r-- | 4.2 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 92.3 KB |
| Kbuild | -rw-r--r-- | 2.4 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 189.9 KB |
| Makefile | -rw-r--r-- | 52.2 KB |
| README | -rw-r--r-- | 17.1 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.3 KB |
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