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[PATCH] s390: stop_hz_timer vs. xtime updates
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 7 Nov 2005 08:59:02 +0000 (00:59 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Mon, 7 Nov 2005 15:53:32 +0000 (07:53 -0800)
The calculation of the value return by next_timer_interrupt from jiffies to
jiffies_64 is racy against xtime updates.  We need to protect the calculation
with read_seqbegin/read_seqretry.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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