diff options
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/vfs_bio.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index f6fad6d3201..0588efe6b1f 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vfs_bio.c,v 1.25 1999/12/02 20:55:47 art Exp $ */ +/* $OpenBSD: vfs_bio.c,v 1.26 1999/12/05 08:09:01 art Exp $ */ /* $NetBSD: vfs_bio.c,v 1.44 1996/06/11 11:15:36 pk Exp $ */ /*- @@ -282,6 +282,8 @@ bwrite(bp) struct buf *bp; { int rv, async, wasdelayed, s; + struct vnode *vp; + struct mount *mp; /* * Remember buffer type, to switch on it later. If the write was @@ -296,6 +298,25 @@ bwrite(bp) bdwrite(bp); return (0); } + + /* + * Collect statistics on synchronous and asynchronous writes. + * Writes to block devices are charged to their associated + * filesystem (if any). + */ + if ((vp = bp->b_vp) != NULL) { + if (vp->v_type == VBLK) + mp = vp->v_specmountpoint; + else + mp = vp->v_mount; + if (mp != NULL) { + if (async) + mp->mnt_stat.f_asyncwrites++; + else + mp->mnt_stat.f_syncwrites++; + } + } + wasdelayed = ISSET(bp->b_flags, B_DELWRI); CLR(bp->b_flags, (B_READ | B_DONE | B_ERROR | B_DELWRI)); |