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watch_queue: Make comment about setting ->defunct more accurate

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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>
This commit is contained in:
David Howells 2022-03-11 13:24:47 +00:00 committed by Linus Torvalds
parent 2ed147f015
commit 4edc076041
1 changed files with 1 additions and 1 deletions
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2
kernel/watch_queue.c
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@ -566,7 +566,7 @@ 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)) {