The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=d0b41249bfbe4481baec8f1659468ffbb30388ab
commit d0b41249bfbe4481baec8f1659468ffbb30388ab
Author: Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2024-11-12 06:24:03 +0000
Commit: Konstantin Belousov <k...@freebsd.org>
CommitDate: 2024-11-13 19:35:02 +0000
bufwrite(): adjust the comment
The statement about 'do not deadlock there' is false, since this write
might need other writes to finish, which cannot be started due to
runningbufspace.
PR: 282449
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
---
sys/kern/vfs_bio.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c
index 3ef715baebfa..62b0567f269a 100644
--- a/sys/kern/vfs_bio.c
+++ b/sys/kern/vfs_bio.c
@@ -2375,11 +2375,9 @@ bufwrite(struct buf *bp)
} else if (space > hirunningspace) {
/*
* Don't allow the async write to saturate the I/O
- * system. We will not deadlock here because
- * we are blocking waiting for I/O that is already in-progress
- * to complete. We do not block here if it is the update
- * or syncer daemon trying to clean up as that can lead
- * to deadlock.
+ * system. We do not block here if it is the update
+ * or syncer daemon trying to clean up as that can
+ * lead to deadlock.
*/
if ((curthread->td_pflags & TDP_NORUNNINGBUF) == 0 && !vp_md)
waitrunningbufspace();
