git: 2d33ad48bd37 - main - vtruncbuf: improve the check for meta buffer

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=2d33ad48bd37f27925e4c46c798f8f2d23a2b501

commit 2d33ad48bd37f27925e4c46c798f8f2d23a2b501
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2023-12-31 20:46:53 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2024-01-05 04:58:50 +0000

    vtruncbuf: improve the check for meta buffer
    
    Revision e99215a614675 reorganized the code in vtruncbuf(), and moved
    the logic to flush meta buffers into a dedicated loop. While doing it,
    the condition was changed from bp->b_lblkno < 0 (to handle) into
    bp->b_lblkno > 0 (to skip), which causes buffer at lblkno to needlessly
    flush.
    
    Reviewed by:    chs, markj
    Tested by:      pho
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D43261
---
 sys/kern/vfs_subr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 2e2457f59f60..e18c34656af4 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -2554,7 +2554,7 @@ restart_unlocked:
 		 */
 restartsync:
 		TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
-			if (bp->b_lblkno > 0)
+			if (bp->b_lblkno >= 0)
 				continue;
 			/*
 			 * Since we hold the vnode lock this should only