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| author | Mel Gorman | 2013-12-19 02:08:45 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2013-12-19 04:04:51 +0100 |
| commit | af2c1401e6f9177483be4fad876d0073669df9df (patch) | |
| tree | 630b024e7f5e53fcd73ab4d04148720185797a0a /mm/migrate.c | |
| parent | mm: fix TLB flush race between migration, and change_protection_range (diff) | |
| download | kernel-qcow2-linux-af2c1401e6f9177483be4fad876d0073669df9df.tar.gz kernel-qcow2-linux-af2c1401e6f9177483be4fad876d0073669df9df.tar.xz kernel-qcow2-linux-af2c1401e6f9177483be4fad876d0073669df9df.zip | |
mm: numa: guarantee that tlb_flush_pending updates are visible before page table updates
According to documentation on barriers, stores issued before a LOCK can
complete after the lock implying that it's possible tlb_flush_pending
can be visible after a page table update. As per revised documentation,
this patch adds a smp_mb__before_spinlock to guarantee the correct
ordering.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
0 files changed, 0 insertions, 0 deletions