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Update to onnv_147

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This is the last official OpenSolaris tag before the public
development tree was closed.
This commit is contained in:
Brian Behlendorf
2010-08-26 14:24:34 -07:00
parent 1980602bfa
commit 572e285762
101 changed files with 7835 additions and 2448 deletions
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module/zfs/arc.c
+36 -19
View File
@@ -952,11 +952,6 @@ arc_cksum_compute(arc_buf_t *buf, boolean_t force)
void
arc_buf_thaw(arc_buf_t *buf)
{
kmutex_t *hash_lock;
hash_lock = HDR_LOCK(buf->b_hdr);
mutex_enter(hash_lock);
if (zfs_flags & ZFS_DEBUG_MODIFY) {
if (buf->b_hdr->b_state != arc_anon)
panic("modifying non-anon buffer!");
@@ -978,7 +973,6 @@ arc_buf_thaw(arc_buf_t *buf)
}
mutex_exit(&buf->b_hdr->b_freeze_lock);
mutex_exit(hash_lock);
}
void
@@ -1750,6 +1744,7 @@ static void
arc_evict_ghost(arc_state_t *state, uint64_t spa, int64_t bytes)
{
arc_buf_hdr_t *ab, *ab_prev;
arc_buf_hdr_t marker = { 0 };
list_t *list = &state->arcs_list[ARC_BUFC_DATA];
kmutex_t *hash_lock;
uint64_t bytes_deleted = 0;
@@ -1762,6 +1757,11 @@ top:
ab_prev = list_prev(list, ab);
if (spa && ab->b_spa != spa)
continue;
/* ignore markers */
if (ab->b_spa == 0)
continue;
hash_lock = HDR_LOCK(ab);
/* caller may be trying to modify this buffer, skip it */
if (MUTEX_HELD(hash_lock))
@@ -1788,15 +1788,21 @@ top:
DTRACE_PROBE1(arc__delete, arc_buf_hdr_t *, ab);
if (bytes >= 0 && bytes_deleted >= bytes)
break;
} else {
if (bytes < 0) {
mutex_exit(&state->arcs_mtx);
mutex_enter(hash_lock);
mutex_exit(hash_lock);
goto top;
}
} else if (bytes < 0) {
/*
* Insert a list marker and then wait for the
* hash lock to become available. Once its
* available, restart from where we left off.
*/
list_insert_after(list, ab, &marker);
mutex_exit(&state->arcs_mtx);
mutex_enter(hash_lock);
mutex_exit(hash_lock);
mutex_enter(&state->arcs_mtx);
ab_prev = list_prev(list, &marker);
list_remove(list, &marker);
} else
bufs_skipped += 1;
}
}
mutex_exit(&state->arcs_mtx);
@@ -1825,8 +1831,9 @@ arc_adjust(void)
* Adjust MRU size
*/
adjustment = MIN(arc_size - arc_c,
arc_anon->arcs_size + arc_mru->arcs_size + arc_meta_used - arc_p);
adjustment = MIN((int64_t)(arc_size - arc_c),
(int64_t)(arc_anon->arcs_size + arc_mru->arcs_size + arc_meta_used -
arc_p));
if (adjustment > 0 && arc_mru->arcs_lsize[ARC_BUFC_DATA] > 0) {
delta = MIN(arc_mru->arcs_lsize[ARC_BUFC_DATA], adjustment);
@@ -2113,9 +2120,7 @@ arc_reclaim_thread(void)
arc_no_grow = FALSE;
}
if (2 * arc_c < arc_size +
arc_mru_ghost->arcs_size + arc_mfu_ghost->arcs_size)
arc_adjust();
arc_adjust();
if (arc_eviction_list != NULL)
arc_do_user_evicts();
@@ -2159,6 +2164,7 @@ arc_adapt(int bytes, arc_state_t *state)
if (state == arc_mru_ghost) {
mult = ((arc_mru_ghost->arcs_size >= arc_mfu_ghost->arcs_size) ?
1 : (arc_mfu_ghost->arcs_size/arc_mru_ghost->arcs_size));
mult = MIN(mult, 10); /* avoid wild arc_p adjustment */
arc_p = MIN(arc_c - arc_p_min, arc_p + bytes * mult);
} else if (state == arc_mfu_ghost) {
@@ -2166,6 +2172,7 @@ arc_adapt(int bytes, arc_state_t *state)
mult = ((arc_mfu_ghost->arcs_size >= arc_mru_ghost->arcs_size) ?
1 : (arc_mru_ghost->arcs_size/arc_mfu_ghost->arcs_size));
mult = MIN(mult, 10);
delta = MIN(bytes * mult, arc_p);
arc_p = MAX(arc_p_min, arc_p - delta);
@@ -4437,6 +4444,16 @@ l2arc_feed_thread(void)
spa = dev->l2ad_spa;
ASSERT(spa != NULL);
/*
* If the pool is read-only then force the feed thread to
* sleep a little longer.
*/
if (!spa_writeable(spa)) {
next = ddi_get_lbolt() + 5 * l2arc_feed_secs * hz;
spa_config_exit(spa, SCL_L2ARC, dev);
continue;
}
/*
* Avoid contributing to memory pressure.
*/