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author | Mel Gorman | 2011-07-09 00:39:39 +0200 |
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committer | Linus Torvalds | 2011-07-09 06:14:43 +0200 |
commit | da175d06b437093f93109ba9e5efbe44dfdf9409 (patch) | |
tree | 04bbed7c41347e3614690947c66f87e8e38a6051 /block/Kconfig | |
parent | mm: vmscan: do not apply pressure to slab if we are not applying pressure to ... (diff) | |
download | kernel-qcow2-linux-da175d06b437093f93109ba9e5efbe44dfdf9409.tar.gz kernel-qcow2-linux-da175d06b437093f93109ba9e5efbe44dfdf9409.tar.xz kernel-qcow2-linux-da175d06b437093f93109ba9e5efbe44dfdf9409.zip |
mm: vmscan: evaluate the watermarks against the correct classzone
When deciding if kswapd is sleeping prematurely, the classzone is taken
into account but this is different to what balance_pgdat() and the
allocator are doing. Specifically, the DMA zone will be checked based on
the classzone used when waking kswapd which could be for a GFP_KERNEL or
GFP_HIGHMEM request. The lowmem reserve limit kicks in, the watermark is
not met and kswapd thinks it's sleeping prematurely keeping kswapd awake in
error.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Andrew Lutomirski <luto@mit.edu>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block/Kconfig')
0 files changed, 0 insertions, 0 deletions