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if mounted ASYNC, use delayed writes for metadata, which improves performance

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of these operations significantly
based on FreeBSD ufs_lookup.c rev. 1.8, by John Dyson
This commit is contained in:
jdolecek 2003-09-20 21:05:53 +00:00
parent d421676fae
commit d07d321142
1 changed files with 23 additions and 7 deletions
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30
sys/ufs/ufs/ufs_lookup.c
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@ -1,4 +1,4 @@
/* $NetBSD: ufs_lookup.c,v 1.52 2003/09/15 15:08:09 yamt Exp $ */
/* $NetBSD: ufs_lookup.c,v 1.53 2003/09/20 21:05:53 jdolecek Exp $ */
/*
* Copyright (c) 1989, 1993
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ufs_lookup.c,v 1.52 2003/09/15 15:08:09 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: ufs_lookup.c,v 1.53 2003/09/20 21:05:53 jdolecek Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -761,7 +761,7 @@ ufs_direnter(dvp, tvp, dirp, cnp, newdirbp)
if (dp->i_offset & (dirblksiz - 1))
panic("ufs_direnter: newblk");
flags = B_CLRBUF;
if (!DOINGSOFTDEP(dvp))
if (!DOINGSOFTDEP(dvp) && !(dvp->v_mount->mnt_flag &MNT_ASYNC))
flags |= B_SYNC;
if ((error = VOP_BALLOC(dvp, (off_t)dp->i_offset, dirblksiz,
cr, flags, &bp)) != 0) {
@ -829,7 +829,11 @@ ufs_direnter(dvp, tvp, dirp, cnp, newdirbp)
vn_lock(tvp, LK_EXCLUSIVE | LK_RETRY);
return (error);
} else {
error = VOP_BWRITE(bp);
if (dvp->v_mount->mnt_flag & MNT_ASYNC) {
bdwrite(bp);
error = 0;
} else
error = VOP_BWRITE(bp);
}
TIMEVAL_TO_TIMESPEC(&time, &ts);
ret = VOP_UPDATE(dvp, &ts, &ts, UPDATE_DIROP);
@ -932,7 +936,11 @@ ufs_direnter(dvp, tvp, dirp, cnp, newdirbp)
ufs_rw32(dirp->d_ino, needswap), newdirbp, 0);
bdwrite(bp);
} else {
error = VOP_BWRITE(bp);
if (dvp->v_mount->mnt_flag & MNT_ASYNC) {
bdwrite(bp);
error = 0;
} else
error = VOP_BWRITE(bp);
}
dp->i_flag |= IN_CHANGE | IN_UPDATE;
/*
@ -1026,7 +1034,11 @@ out:
DIP_ASSIGN(ip, nlink, ip->i_nlink);
ip->i_flag |= IN_CHANGE;
}
error = VOP_BWRITE(bp);
if (dvp->v_mount->mnt_flag & MNT_ASYNC) {
bdwrite(bp);
error = 0;
} else
error = VOP_BWRITE(bp);
}
dp->i_flag |= IN_CHANGE | IN_UPDATE;
return (error);
@ -1065,7 +1077,11 @@ ufs_dirrewrite(dp, oip, newinum, newtype, isrmdir, iflags)
oip->i_nlink--;
DIP_ASSIGN(oip, nlink, oip->i_nlink);
oip->i_flag |= IN_CHANGE;
error = VOP_BWRITE(bp);
if (vdp->v_mount->mnt_flag & MNT_ASYNC) {
bdwrite(bp);
error = 0;
} else
error = VOP_BWRITE(bp);
}
dp->i_flag |= iflags;
return (error);