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watch_queue: Make comment about setting ->defunct more accurate

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commit 4edc076041 upstream.

watch_queue_clear() has a comment stating that setting ->defunct to true
preventing new additions as well as preventing notifications.  Whilst
the latter is true, the first bit is superfluous since at the time this
function is called, the pipe cannot be accessed to add new event
sources.

Remove the "new additions" bit from the comment.

Fixes: c73be61ced ("pipe: Add general notification queue support")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Howells
2022-03-11 13:24:47 +00:00
committed by Greg Kroah-Hartman
parent ec03510e0a
commit 24d268130e
1 changed files with 1 additions and 1 deletions
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kernel/watch_queue.c
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@@ -569,7 +569,7 @@ void watch_queue_clear(struct watch_queue *wqueue)
rcu_read_lock();
spin_lock_bh(&wqueue->lock);
/* Prevent new additions and prevent notifications from happening */
/* Prevent new notifications from being stored. */
wqueue->defunct = true;
while (!hlist_empty(&wqueue->watches)) {