Author: delphij
Date: Mon Oct 20 22:04:49 2014
New Revision: 273346
URL: https://svnweb.freebsd.org/changeset/base/273346
Log:
MFC r272511: MFV r272499:
Illumos issue:
5174 add sdt probe for blocked read in dbuf_read()
Modified:
stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
==============================================================================
--- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c Mon Oct
20 21:59:11 2014 (r273345)
+++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c Mon Oct
20 22:04:49 2014 (r273346)
@@ -671,6 +671,8 @@ dbuf_read(dmu_buf_impl_t *db, zio_t *zio
db->db_state == DB_FILL) {
ASSERT(db->db_state == DB_READ ||
(flags & DB_RF_HAVESTRUCT) == 0);
+ DTRACE_PROBE2(blocked__read, dmu_buf_impl_t *,
+ db, zio_t *, zio);
cv_wait(&db->db_changed, &db->db_mtx);
}
if (db->db_state == DB_UNCACHED)
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