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Honor zfs_nocacheflush for file vdevs

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For consistency with disk vdevs honor the zfs_nocacheflush tunable.
This setting is available primarily for debugging and performance
analysis.

Signed-off-by: HC <mmttdebbcc@yahoo.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2336
This commit is contained in:
HC 2014-05-14 20:58:11 -04:00 committed by Brian Behlendorf
parent 83021b47c2
commit f9a1ac4d59
1 changed files with 4 additions and 0 deletions
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4
module/zfs/vdev_file.c
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@ -176,6 +176,10 @@ vdev_file_io_start(zio_t *zio)
switch (zio->io_cmd) { switch (zio->io_cmd) {
case DKIOCFLUSHWRITECACHE: case DKIOCFLUSHWRITECACHE:
if (zfs_nocacheflush)
break;
zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC, zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC,
kcred, NULL); kcred, NULL);
break; break;