X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=module%2Fzfs%2Fvdev_file.c;h=3c0ce53cdf80b1c344bca9d309159aba3422b6c3;hb=753c38392ddff9d3cf140bb4d28f3bfba52c92d2;hp=bbc85e733011a9c07b06def549d2e8992dd36de7;hpb=3558fd73b5d863304102f6745c26e0b592aca60a;p=zfs.git

diff --git a/module/zfs/vdev_file.c b/module/zfs/vdev_file.c
index bbc85e7..3c0ce53 100644
--- a/module/zfs/vdev_file.c
+++ b/module/zfs/vdev_file.c
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
  */
 
 #include <sys/zfs_context.h>
@@ -47,7 +48,8 @@ vdev_file_rele(vdev_t *vd)
 }
 
 static int
-vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift)
+vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
+    uint64_t *ashift)
 {
 	vdev_file_t *vf;
 	vnode_t *vp;
@@ -72,7 +74,7 @@ vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift)
 		goto skip_open;
 	}
 
-	vf = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_file_t), KM_SLEEP);
+	vf = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_file_t), KM_PUSHPAGE);
 
 	/*
 	 * We always open the files from the root of the global zone, even if
@@ -112,7 +114,7 @@ skip_open:
 		return (error);
 	}
 
-	*psize = vattr.va_size;
+	*max_psize = *psize = vattr.va_size;
 	*ashift = SPA_MINBLOCKSHIFT;
 
 	return (0);
@@ -141,16 +143,17 @@ static int
 vdev_file_io_start(zio_t *zio)
 {
 	vdev_t *vd = zio->io_vd;
-	vdev_file_t *vf = vd->vdev_tsd;
+	vdev_file_t *vf;
 	ssize_t resid = 0;
 
-	if (zio->io_type == ZIO_TYPE_IOCTL) {
-		/* XXPOLICY */
-		if (!vdev_readable(vd)) {
-			zio->io_error = ENXIO;
-			return (ZIO_PIPELINE_CONTINUE);
-		}
+	if (!vdev_readable(vd)) {
+		zio->io_error = ENXIO;
+		return (ZIO_PIPELINE_CONTINUE);
+	}
 
+	vf = vd->vdev_tsd;
+
+	if (zio->io_type == ZIO_TYPE_IOCTL) {
 		switch (zio->io_cmd) {
 		case DKIOCFLUSHWRITECACHE:
 			zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC,