git: 0cc746f19352 - main - filt_fsevent: only record interested events

[Robert Wing]

The branch main has been updated by rew:

URL: https://cgit.FreeBSD.org/src/commit/?id=0cc746f19352979b65a3652149e4f6bd21c0104c

commit 0cc746f19352979b65a3652149e4f6bd21c0104c
Author:     Robert Wing <rew at FreeBSD.org>
AuthorDate: 2021-03-02 23:19:22 +0000
Commit:     Robert Wing <rew at FreeBSD.org>
CommitDate: 2021-03-02 23:19:22 +0000

    filt_fsevent: only record interested events
    
    Respect filter-specific flags for the EVFILT_FS filter.
    
    When a kevent is registered with the EVFILT_FS filter, it is always
    triggered when an EVFILT_FS event occurs, regardless of the
    filter-specific flags used. Fix that.
    
    Reviewed by:    kib
    Differential Revision:  https://reviews.freebsd.org/D28974
---
 sys/kern/vfs_subr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 3f7dae762de0..c4772f691397 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -6016,7 +6016,8 @@ static int
 filt_fsevent(struct knote *kn, long hint)
 {
 
-	kn->kn_fflags |= hint;
+	kn->kn_fflags |= kn->kn_sfflags & hint;
+
 	return (kn->kn_fflags != 0);
 }