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Diffstat (limited to 'Documentation/spinlocks.txt')
-rw-r--r-- | Documentation/spinlocks.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt index 9dbe885ecd8d..97eaf5727178 100644 --- a/Documentation/spinlocks.txt +++ b/Documentation/spinlocks.txt | |||
@@ -137,7 +137,7 @@ don't block on each other (and thus there is no dead-lock wrt interrupts. | |||
137 | But when you do the write-lock, you have to use the irq-safe version. | 137 | But when you do the write-lock, you have to use the irq-safe version. |
138 | 138 | ||
139 | For an example of being clever with rw-locks, see the "waitqueue_lock" | 139 | For an example of being clever with rw-locks, see the "waitqueue_lock" |
140 | handling in kernel/sched.c - nothing ever _changes_ a wait-queue from | 140 | handling in kernel/sched/core.c - nothing ever _changes_ a wait-queue from |
141 | within an interrupt, they only read the queue in order to know whom to | 141 | within an interrupt, they only read the queue in order to know whom to |
142 | wake up. So read-locks are safe (which is good: they are very common | 142 | wake up. So read-locks are safe (which is good: they are very common |
143 | indeed), while write-locks need to protect themselves against interrupts. | 143 | indeed), while write-locks need to protect themselves against interrupts. |