Illumos #2619 and #2747

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

diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index ce76e01..66f228b 100644 (file)
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -704,7 +704,7 @@ zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp,
            zp->zp_checksum < ZIO_CHECKSUM_FUNCTIONS &&
            zp->zp_compress >= ZIO_COMPRESS_OFF &&
            zp->zp_compress < ZIO_COMPRESS_FUNCTIONS &&
-           zp->zp_type < DMU_OT_NUMTYPES &&
+           DMU_OT_IS_VALID(zp->zp_type) &&
            zp->zp_level < 32 &&
            zp->zp_copies > 0 &&
            zp->zp_copies <= spa_max_replication(spa) &&
@@ -988,7 +988,7 @@ zio_read_bp_init(zio_t *zio)
                zio_push_transform(zio, cbuf, psize, psize, zio_decompress);
        }
 
-       if (!dmu_ot[BP_GET_TYPE(bp)].ot_metadata && BP_GET_LEVEL(bp) == 0)
+       if (!DMU_OT_IS_METADATA(BP_GET_TYPE(bp)) && BP_GET_LEVEL(bp) == 0)
                zio->io_flags |= ZIO_FLAG_DONT_CACHE;
 
        if (BP_GET_TYPE(bp) == DMU_OT_DDT_ZAP)
@@ -1316,7 +1316,7 @@ zio_wait(zio_t *zio)
 
        mutex_enter(&zio->io_lock);
        while (zio->io_executor != NULL)
-               cv_wait(&zio->io_cv, &zio->io_lock);
+               cv_wait_io(&zio->io_cv, &zio->io_lock);
        mutex_exit(&zio->io_lock);
 
        error = zio->io_error;
@@ -2438,25 +2438,19 @@ zio_vdev_io_start(zio_t *zio)
 
        align = 1ULL << vd->vdev_top->vdev_ashift;
 
-       /*
-        * On Linux, we don't care about read alignment. The backing block
-        * device driver will take care of that for us.
-        * The only exception is raidz, which needs a full block for parity.
-        */
-       if (P2PHASE(zio->io_size, align) != 0 &&
-           (zio->io_type != ZIO_TYPE_READ ||
-            vd->vdev_ops == &vdev_raidz_ops)) {
+       if (P2PHASE(zio->io_size, align) != 0) {
                uint64_t asize = P2ROUNDUP(zio->io_size, align);
                char *abuf = zio_buf_alloc(asize);
+               ASSERT(vd == vd->vdev_top);
                if (zio->io_type == ZIO_TYPE_WRITE) {
                        bcopy(zio->io_data, abuf, zio->io_size);
                        bzero(abuf + zio->io_size, asize - zio->io_size);
                }
                zio_push_transform(zio, abuf, asize, asize, zio_subblock);
-               ASSERT(P2PHASE(zio->io_size, align) == 0);
        }
 
        ASSERT(P2PHASE(zio->io_offset, align) == 0);
+       ASSERT(P2PHASE(zio->io_size, align) == 0);
        VERIFY(zio->io_type != ZIO_TYPE_WRITE || spa_writeable(spa));
 
        /*
@@ -3137,6 +3131,48 @@ static zio_pipe_stage_t *zio_pipeline[] = {
        zio_done
 };
 
+/* dnp is the dnode for zb1->zb_object */
+boolean_t
+zbookmark_is_before(const dnode_phys_t *dnp, const zbookmark_t *zb1,
+    const zbookmark_t *zb2)
+{
+       uint64_t zb1nextL0, zb2thisobj;
+
+       ASSERT(zb1->zb_objset == zb2->zb_objset);
+       ASSERT(zb2->zb_level == 0);
+
+       /*
+        * A bookmark in the deadlist is considered to be after
+        * everything else.
+        */
+       if (zb2->zb_object == DMU_DEADLIST_OBJECT)
+               return (B_TRUE);
+
+       /* The objset_phys_t isn't before anything. */
+       if (dnp == NULL)
+               return (B_FALSE);
+
+       zb1nextL0 = (zb1->zb_blkid + 1) <<
+           ((zb1->zb_level) * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT));
+
+       zb2thisobj = zb2->zb_object ? zb2->zb_object :
+           zb2->zb_blkid << (DNODE_BLOCK_SHIFT - DNODE_SHIFT);
+
+       if (zb1->zb_object == DMU_META_DNODE_OBJECT) {
+               uint64_t nextobj = zb1nextL0 *
+                   (dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT) >> DNODE_SHIFT;
+               return (nextobj <= zb2thisobj);
+       }
+
+       if (zb1->zb_object < zb2thisobj)
+               return (B_TRUE);
+       if (zb1->zb_object > zb2thisobj)
+               return (B_FALSE);
+       if (zb2->zb_object == DMU_META_DNODE_OBJECT)
+               return (B_FALSE);
+       return (zb1nextL0 <= zb2->zb_blkid);
+}
+
 #if defined(_KERNEL) && defined(HAVE_SPL)
 /* Fault injection */
 EXPORT_SYMBOL(zio_injection_enabled);