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23 October 2021, 00:29:24 UTC
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 
mm: compaction: abort compaction if too many pages are isolated and caller is asynchronous V2
 
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
History
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
Tip revision: f9e35b3
File Mode Size
apparmor
integrity
keys
selinux
smack
tomoyo
Kconfig -rw-r--r-- 7.8 KB
Makefile -rw-r--r-- 938 bytes
capability.c -rw-r--r-- 23.3 KB
commoncap.c -rw-r--r-- 27.2 KB
device_cgroup.c -rw-r--r-- 11.7 KB
inode.c -rw-r--r-- 8.7 KB
lsm_audit.c -rw-r--r-- 8.9 KB
min_addr.c -rw-r--r-- 1.3 KB
security.c -rw-r--r-- 32.5 KB
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