Author: avg
Date: Mon Nov 17 14:16:02 2014
New Revision: 274627
URL: https://svnweb.freebsd.org/changeset/base/274627
Log:
Revert r269093 which introduced physical zio alignment transform
Size of physical ZIOs must never be implicitly adjusted, it's
a responsibility of a caller to make sure that such a ZIO has proper offset
and size.
Discussed with: delphij, gibbs
MFC after: 2 weeks
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Mon Nov 17
13:39:00 2014 (r274626)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Mon Nov 17
14:16:02 2014 (r274627)
@@ -2619,8 +2619,7 @@ zio_vdev_io_start(zio_t *zio)
align = 1ULL << vd->vdev_top->vdev_ashift;
- if ((!(zio->io_flags & ZIO_FLAG_PHYSICAL) ||
- (vd->vdev_top->vdev_physical_ashift > SPA_MINBLOCKSHIFT)) &&
+ if (!(zio->io_flags & ZIO_FLAG_PHYSICAL) &&
P2PHASE(zio->io_size, align) != 0) {
/* Transform logical writes to be a full physical block size. */
uint64_t asize = P2ROUNDUP(zio->io_size, align);
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