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Remove b_thawed from arc_buf_hdr_t 

The code involving b_thawed appears to be dead, so lets discard it.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1614
This commit is contained in:
Richard Yao 2013-07-09 10:45:30 -04:00 committed by Brian Behlendorf
parent 3f4058cd15
commit cb543e6b5e
1 changed files with 0 additions and 11 deletions
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11
module/zfs/arc.c
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@ -501,7 +501,6 @@ struct arc_buf_hdr {
kmutex_t b_freeze_lock;
zio_cksum_t *b_freeze_cksum;
void *b_thawed;
arc_buf_hdr_t *b_hash_next;
arc_buf_t *b_buf;
@ -1033,12 +1032,6 @@ arc_buf_thaw(arc_buf_t *buf)
buf->b_hdr->b_freeze_cksum = NULL;
}
if (zfs_flags & ZFS_DEBUG_MODIFY) {
if (buf->b_hdr->b_thawed)
kmem_free(buf->b_hdr->b_thawed, 1);
buf->b_hdr->b_thawed = kmem_alloc(1, KM_SLEEP);
}
mutex_exit(&buf->b_hdr->b_freeze_lock);
}
@ -1564,10 +1557,6 @@ arc_hdr_destroy(arc_buf_hdr_t *hdr)
kmem_free(hdr->b_freeze_cksum, sizeof (zio_cksum_t));
hdr->b_freeze_cksum = NULL;
}
if (hdr->b_thawed) {
kmem_free(hdr->b_thawed, 1);
hdr->b_thawed = NULL;
}
ASSERT(!list_link_active(&hdr->b_arc_node));
ASSERT3P(hdr->b_hash_next, ==, NULL);