This is a note to let you know that I've just added the patch titled
Revert "fanotify: limit number of event merge attempts"
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-fanotify-limit-number-of-event-merge-attempts.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f876d945cd6f8cfb878a6ae880b4dc24620de580
Author: Chuck Lever <chuck.lever@xxxxxxxxxx>
Date: Thu Mar 7 09:22:43 2024 -0500
Revert "fanotify: limit number of event merge attempts"
Temporarily revert commit ad3ea16746cc ("fanotify: limit number of
event merge attempts") to enable subsequent upstream commits to
apply and build cleanly.
Stable-dep-of: 8988f11abb82 ("fanotify: reduce event objectid to 29-bit hash")
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index c3af99e94f1d1..1192c99536200 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -129,15 +129,11 @@ static bool fanotify_should_merge(struct fsnotify_event *old_fsn,
return false;
}
-/* Limit event merges to limit CPU overhead per event */
-#define FANOTIFY_MAX_MERGE_EVENTS 128
-
/* and the list better be locked by something too! */
static int fanotify_merge(struct list_head *list, struct fsnotify_event *event)
{
struct fsnotify_event *test_event;
struct fanotify_event *new;
- int i = 0;
pr_debug("%s: list=%p event=%p\n", __func__, list, event);
new = FANOTIFY_E(event);
@@ -151,8 +147,6 @@ static int fanotify_merge(struct list_head *list, struct fsnotify_event *event)
return 0;
list_for_each_entry_reverse(test_event, list, list) {
- if (++i > FANOTIFY_MAX_MERGE_EVENTS)
- break;
if (fanotify_should_merge(test_event, event)) {
FANOTIFY_E(test_event)->mask |= new->mask;
return 1;
