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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2006-03-24 14:15:50 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-24 18:33:20 +0300 |
| commit | caa9ee771de3195ae85ac6f8cb550f53e9ecdd82 (patch) | |
| tree | 8aa692f337e071718e698baefc631b58b446beff /fs | |
| parent | cba9f33d13a8ca3125b2a30abe2425ce562d8a83 (diff) | |
| download | linux-caa9ee771de3195ae85ac6f8cb550f53e9ecdd82.tar.xz | |
[PATCH] rcu_process_callbacks: don't cli() while testing ->nxtlist
__rcu_process_callbacks() disables interrupts to protect itself from
call_rcu() which adds new entries to ->nxtlist.
However we can check "->nxtlist != NULL" with interrupts enabled, we can't
get "false positives" because call_rcu() can only change this condition
from 0 to 1.
Tested with rcutorture.ko.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Dipankar Sarma <dipankar@in.ibm.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions