diff options
| author | Mel Gorman <mgorman@suse.de> | 2011-04-25 21:36:42 +0000 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-05-21 15:09:34 +0200 |
| commit | cfd3da1e49bb95c355c01c0f502d657deb3d34a4 (patch) | |
| tree | 002aa5a9001a7b600ea8af90b59ccbbe133d48e0 /net/ipv4/tcp_cong.c | |
| parent | 0815f3d81d76dfbf2abcfd93a85ff0a6008fe4c0 (diff) | |
| download | op-kernel-dev-cfd3da1e49bb95c355c01c0f502d657deb3d34a4.zip op-kernel-dev-cfd3da1e49bb95c355c01c0f502d657deb3d34a4.tar.gz | |
mm: Serialize access to min_free_kbytes
There is a race between the min_free_kbytes sysctl, memory hotplug
and transparent hugepage support enablement. Memory hotplug uses a
zonelists_mutex to avoid a race when building zonelists. Reuse it to
serialise watermark updates.
[a.p.zijlstra@chello.nl: Older patch fixed the race with spinlock]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Tested-by: Barry Song <Baohua.Song@csr.com>
Diffstat (limited to 'net/ipv4/tcp_cong.c')
0 files changed, 0 insertions, 0 deletions
