Author: avg
Date: Thu Mar 23 09:13:21 2017
New Revision: 315853
URL: https://svnweb.freebsd.org/changeset/base/315853
Log:
zfs_putpages: use TXG_WAIT
Explicit looping using TXG_NOWAIT is more verbose and may harm performance
under heavy load because of multiple waits.
MFC after: 1 week
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Thu Mar
23 08:59:17 2017 (r315852)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Thu Mar
23 09:13:21 2017 (r315853)
@@ -4712,19 +4712,13 @@ zfs_putpages(struct vnode *vp, vm_page_t
goto out;
}
-top:
tx = dmu_tx_create(zfsvfs->z_os);
dmu_tx_hold_write(tx, zp->z_id, off, len);
dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
zfs_sa_upgrade_txholds(tx, zp);
- err = dmu_tx_assign(tx, TXG_NOWAIT);
+ err = dmu_tx_assign(tx, TXG_WAIT);
if (err != 0) {
- if (err == ERESTART) {
- dmu_tx_wait(tx);
- dmu_tx_abort(tx);
- goto top;
- }
dmu_tx_abort(tx);
goto out;
}
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