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| author | Sunil Mushran <sunil.mushran@oracle.com> | 2010-10-07 02:55:18 +0200 |
|---|---|---|
| committer | Sunil Mushran <sunil.mushran@oracle.com> | 2010-10-07 02:55:18 +0200 |
| commit | e7d656baf6607a0775f4ca85464a4ead306741e5 (patch) | |
| tree | 0ed3f7a94209ccb13b450234aa801c2393546fab /fs/ocfs2 | |
| parent | ocfs2/cluster: Track number of global heartbeat regions (diff) | |
| download | linux-e7d656baf6607a0775f4ca85464a4ead306741e5.tar.xz linux-e7d656baf6607a0775f4ca85464a4ead306741e5.zip | |
ocfs2/cluster: Track bitmap of live heartbeat regions
A heartbeat region becomes live (or active) after a fixed number of (steady)
iterations.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index d66b17c000d4..2a7cd17e96f0 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -65,8 +65,10 @@ static DECLARE_WAIT_QUEUE_HEAD(o2hb_steady_queue); /* * In global heartbeat, we maintain a series of region bitmaps. * - o2hb_region_bitmap allows us to limit the region number to max region. + * - o2hb_live_region_bitmap tracks live regions (seen steady iterations). */ static unsigned long o2hb_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)]; +static unsigned long o2hb_live_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)]; #define O2HB_DB_TYPE_LIVENODES 0 struct o2hb_debug_buf { @@ -1135,6 +1137,7 @@ int o2hb_init(void) memset(o2hb_live_node_bitmap, 0, sizeof(o2hb_live_node_bitmap)); memset(o2hb_region_bitmap, 0, sizeof(o2hb_region_bitmap)); + memset(o2hb_live_region_bitmap, 0, sizeof(o2hb_live_region_bitmap)); return o2hb_debug_init(); } @@ -1563,6 +1566,8 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg, /* Ok, we were woken. Make sure it wasn't by drop_item() */ spin_lock(&o2hb_live_lock); hb_task = reg->hr_task; + if (o2hb_global_heartbeat_active()) + set_bit(reg->hr_region_num, o2hb_live_region_bitmap); spin_unlock(&o2hb_live_lock); if (hb_task) @@ -1751,8 +1756,10 @@ static void o2hb_heartbeat_group_drop_item(struct config_group *group, /* stop the thread when the user removes the region dir */ spin_lock(&o2hb_live_lock); - if (o2hb_global_heartbeat_active()) + if (o2hb_global_heartbeat_active()) { clear_bit(reg->hr_region_num, o2hb_region_bitmap); + clear_bit(reg->hr_region_num, o2hb_live_region_bitmap); + } hb_task = reg->hr_task; reg->hr_task = NULL; spin_unlock(&o2hb_live_lock); |