Add SEEK_DATA/SEEK_HOLE to lseek()/llseek()

[zfs.git] / module / zfs / vdev_mirror.c

diff --git a/module/zfs/vdev_mirror.c b/module/zfs/vdev_mirror.c
index 836386d..a2671ca 100644 (file)
--- a/module/zfs/vdev_mirror.c
+++ b/module/zfs/vdev_mirror.c
@@ -19,10 +19,14 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
+/*
+ * Copyright (c) 2012 by Delphix. All rights reserved.
+ */
+
 #include <sys/zfs_context.h>
 #include <sys/spa.h>
 #include <sys/vdev_impl.h>
@@ -60,6 +64,11 @@ vdev_mirror_map_free(zio_t *zio)
        kmem_free(mm, offsetof(mirror_map_t, mm_child[mm->mm_children]));
 }
 
+static const zio_vsd_ops_t vdev_mirror_vsd_ops = {
+       vdev_mirror_map_free,
+       zio_vsd_default_cksum_report
+};
+
 static mirror_map_t *
 vdev_mirror_map_alloc(zio_t *zio)
 {
@@ -74,7 +83,7 @@ vdev_mirror_map_alloc(zio_t *zio)
 
                c = BP_GET_NDVAS(zio->io_bp);
 
-               mm = kmem_zalloc(offsetof(mirror_map_t, mm_child[c]), KM_SLEEP);
+               mm = kmem_zalloc(offsetof(mirror_map_t, mm_child[c]), KM_PUSHPAGE);
                mm->mm_children = c;
                mm->mm_replacing = B_FALSE;
                mm->mm_preferred = spa_get_random(c);
@@ -101,7 +110,7 @@ vdev_mirror_map_alloc(zio_t *zio)
        } else {
                c = vd->vdev_children;
 
-               mm = kmem_zalloc(offsetof(mirror_map_t, mm_child[c]), KM_SLEEP);
+               mm = kmem_zalloc(offsetof(mirror_map_t, mm_child[c]), KM_PUSHPAGE);
                mm->mm_children = c;
                mm->mm_replacing = (vd->vdev_ops == &vdev_replacing_ops ||
                    vd->vdev_ops == &vdev_spare_ops);
@@ -117,15 +126,17 @@ vdev_mirror_map_alloc(zio_t *zio)
        }
 
        zio->io_vsd = mm;
-       zio->io_vsd_free = vdev_mirror_map_free;
+       zio->io_vsd_ops = &vdev_mirror_vsd_ops;
        return (mm);
 }
 
 static int
-vdev_mirror_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift)
+vdev_mirror_open(vdev_t *vd, uint64_t *asize, uint64_t *max_asize,
+    uint64_t *ashift)
 {
        int numerrors = 0;
        int lasterror = 0;
+       int c;
 
        if (vd->vdev_children == 0) {
                vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL;
@@ -134,7 +145,7 @@ vdev_mirror_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift)
 
        vdev_open_children(vd);
 
-       for (int c = 0; c < vd->vdev_children; c++) {
+       for (c = 0; c < vd->vdev_children; c++) {
                vdev_t *cvd = vd->vdev_child[c];
 
                if (cvd->vdev_open_error) {
@@ -144,6 +155,7 @@ vdev_mirror_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift)
                }
 
                *asize = MIN(*asize - 1, cvd->vdev_asize - 1) + 1;
+               *max_asize = MIN(*max_asize - 1, cvd->vdev_max_asize - 1) + 1;
                *ashift = MAX(*ashift, cvd->vdev_ashift);
        }
 
@@ -158,7 +170,9 @@ vdev_mirror_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift)
 static void
 vdev_mirror_close(vdev_t *vd)
 {
-       for (int c = 0; c < vd->vdev_children; c++)
+       int c;
+
+       for (c = 0; c < vd->vdev_children; c++)
                vdev_close(vd->vdev_child[c]);
 }
 
@@ -209,7 +223,7 @@ vdev_mirror_child_select(zio_t *zio)
        uint64_t txg = zio->io_txg;
        int i, c;
 
-       ASSERT(zio->io_bp == NULL || zio->io_bp->blk_birth == txg);
+       ASSERT(zio->io_bp == NULL || BP_PHYSICAL_BIRTH(zio->io_bp) == txg);
 
        /*
         * Try to find a child whose DTL doesn't contain the block to read.
@@ -306,9 +320,9 @@ vdev_mirror_io_start(zio_t *zio)
 static int
 vdev_mirror_worst_error(mirror_map_t *mm)
 {
-       int error[2] = { 0, 0 };
+       int c, error[2] = { 0, 0 };
 
-       for (int c = 0; c < mm->mm_children; c++) {
+       for (c = 0; c < mm->mm_children; c++) {
                mirror_child_t *mc = &mm->mm_child[c];
                int s = mc->mc_speculative;
                error[s] = zio_worst_error(error[s], mc->mc_error);
@@ -447,6 +461,8 @@ vdev_ops_t vdev_mirror_ops = {
        vdev_mirror_io_start,
        vdev_mirror_io_done,
        vdev_mirror_state_change,
+       NULL,
+       NULL,
        VDEV_TYPE_MIRROR,       /* name of this vdev type */
        B_FALSE                 /* not a leaf vdev */
 };
@@ -458,6 +474,8 @@ vdev_ops_t vdev_replacing_ops = {
        vdev_mirror_io_start,
        vdev_mirror_io_done,
        vdev_mirror_state_change,
+       NULL,
+       NULL,
        VDEV_TYPE_REPLACING,    /* name of this vdev type */
        B_FALSE                 /* not a leaf vdev */
 };
@@ -469,6 +487,8 @@ vdev_ops_t vdev_spare_ops = {
        vdev_mirror_io_start,
        vdev_mirror_io_done,
        vdev_mirror_state_change,
+       NULL,
+       NULL,
        VDEV_TYPE_SPARE,        /* name of this vdev type */
        B_FALSE                 /* not a leaf vdev */
 };