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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 9dbe885ecd8..97eaf572717 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. But when you do the write-lock, you have to use the irq-safe version. For an example of being clever with rw-locks, see the "waitqueue_lock" -handling in kernel/sched.c - nothing ever _changes_ a wait-queue from +handling in kernel/sched/core.c - nothing ever _changes_ a wait-queue from within an interrupt, they only read the queue in order to know whom to wake up. So read-locks are safe (which is good: they are very common indeed), while write-locks need to protect themselves against interrupts. |