[Ocfs2-devel] [PATCH 5/5] ocfs2: Disable orphan scanning for local and hard-ro mounts
Sunil Mushran
sunil.mushran at oracle.com
Mon Jun 22 11:40:07 PDT 2009
Local and Hard-RO mounts do not need orphan scanning.
Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com>
---
fs/ocfs2/dlmglue.c | 26 ++++++++++++++++----------
fs/ocfs2/dlmglue.h | 4 ++--
fs/ocfs2/journal.c | 30 +++++++++++++++++-------------
fs/ocfs2/journal.h | 2 +-
fs/ocfs2/super.c | 32 +++++++++++++++-----------------
5 files changed, 51 insertions(+), 43 deletions(-)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 667701e..8036800 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -2365,15 +2365,20 @@ void ocfs2_inode_unlock(struct inode *inode,
mlog_exit_void();
}
-int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex)
+int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)
{
struct ocfs2_lock_res *lockres;
struct ocfs2_orphan_scan_lvb *lvb;
- int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
int status = 0;
+ if (ocfs2_is_hard_readonly(osb))
+ return -EROFS;
+
+ if (ocfs2_mount_local(osb))
+ return 0;
+
lockres = &osb->osb_orphan_scan.os_lockres;
- status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);
+ status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_EX, 0, 0);
if (status < 0)
return status;
@@ -2386,17 +2391,18 @@ int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex)
return status;
}
-void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno, int ex)
+void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno)
{
struct ocfs2_lock_res *lockres;
struct ocfs2_orphan_scan_lvb *lvb;
- int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
- lockres = &osb->osb_orphan_scan.os_lockres;
- lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
- lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;
- lvb->lvb_os_seqno = cpu_to_be32(seqno);
- ocfs2_cluster_unlock(osb, lockres, level);
+ if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb)) {
+ lockres = &osb->osb_orphan_scan.os_lockres;
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;
+ lvb->lvb_os_seqno = cpu_to_be32(seqno);
+ ocfs2_cluster_unlock(osb, lockres, DLM_LOCK_EX);
+ }
}
int ocfs2_super_lock(struct ocfs2_super *osb,
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
index 31b90d7..30f6831 100644
--- a/fs/ocfs2/dlmglue.h
+++ b/fs/ocfs2/dlmglue.h
@@ -121,8 +121,8 @@ int ocfs2_super_lock(struct ocfs2_super *osb,
int ex);
void ocfs2_super_unlock(struct ocfs2_super *osb,
int ex);
-int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex);
-void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno, int ex);
+int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno);
+void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno);
int ocfs2_rename_lock(struct ocfs2_super *osb);
void ocfs2_rename_unlock(struct ocfs2_super *osb);
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 0b2c27a..f033760 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -1883,7 +1883,7 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
goto out;
- status = ocfs2_orphan_scan_lock(osb, &seqno, DLM_LOCK_EX);
+ status = ocfs2_orphan_scan_lock(osb, &seqno);
if (status < 0) {
if (status != -EAGAIN)
mlog_errno(status);
@@ -1910,7 +1910,7 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
os->os_count++;
os->os_scantime = CURRENT_TIME;
unlock:
- ocfs2_orphan_scan_unlock(osb, seqno, DLM_LOCK_EX);
+ ocfs2_orphan_scan_unlock(osb, seqno);
out:
return;
}
@@ -1938,29 +1938,33 @@ void ocfs2_orphan_scan_stop(struct ocfs2_super *osb)
struct ocfs2_orphan_scan *os;
os = &osb->osb_orphan_scan;
- atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
- mutex_lock(&os->os_lock);
- cancel_delayed_work(&os->os_orphan_scan_work);
- mutex_unlock(&os->os_lock);
+ if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) {
+ atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
+ mutex_lock(&os->os_lock);
+ cancel_delayed_work(&os->os_orphan_scan_work);
+ mutex_unlock(&os->os_lock);
+ }
}
-int ocfs2_orphan_scan_init(struct ocfs2_super *osb)
+void ocfs2_orphan_scan_init(struct ocfs2_super *osb)
{
struct ocfs2_orphan_scan *os;
os = &osb->osb_orphan_scan;
- atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE);
os->os_osb = osb;
os->os_count = 0;
os->os_seqno = 0;
os->os_scantime = CURRENT_TIME;
mutex_init(&os->os_lock);
+ INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work);
- INIT_DELAYED_WORK(&os->os_orphan_scan_work,
- ocfs2_orphan_scan_work);
- schedule_delayed_work(&os->os_orphan_scan_work,
- ocfs2_orphan_scan_timeout());
- return 0;
+ if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))
+ atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
+ else {
+ atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE);
+ schedule_delayed_work(&os->os_orphan_scan_work,
+ ocfs2_orphan_scan_timeout());
+ }
}
struct ocfs2_orphan_filldir_priv {
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index 61045ee..5432c7f 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -144,7 +144,7 @@ static inline void ocfs2_inode_set_new(struct ocfs2_super *osb,
}
/* Exported only for the journal struct init code in super.c. Do not call. */
-int ocfs2_orphan_scan_init(struct ocfs2_super *osb);
+void ocfs2_orphan_scan_init(struct ocfs2_super *osb);
void ocfs2_orphan_scan_stop(struct ocfs2_super *osb);
void ocfs2_orphan_scan_exit(struct ocfs2_super *osb);
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 3e8a68b..0746e1a 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -205,11 +205,10 @@ static const match_table_t tokens = {
#ifdef CONFIG_DEBUG_FS
static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
{
- int out = 0;
- int i;
struct ocfs2_cluster_connection *cconn = osb->cconn;
struct ocfs2_recovery_map *rm = osb->recovery_map;
- struct ocfs2_orphan_scan *os;
+ struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
+ int i, out = 0;
out += snprintf(buf + out, len - out,
"%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
@@ -305,6 +304,16 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
atomic_read(&osb->s_num_inodes_stolen));
spin_unlock(&osb->osb_lock);
+ out += snprintf(buf + out, len - out, "OrphanScan => ");
+ out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
+ os->os_count, os->os_seqno);
+ out += snprintf(buf + out, len - out, " Last Scan: ");
+ if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
+ out += snprintf(buf + out, len - out, "Disabled\n");
+ else
+ out += snprintf(buf + out, len - out, "%lu seconds ago\n",
+ (get_seconds() - os->os_scantime.tv_sec));
+
out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
"Slots", "Num", "RecoGen");
for (i = 0; i < osb->max_slots; ++i) {
@@ -315,13 +324,6 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
i, osb->slot_recovery_generations[i]);
}
- os = &osb->osb_orphan_scan;
- out += snprintf(buf + out, len - out, "Orphan Scan=> ");
- out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
- os->os_count, os->os_seqno);
- out += snprintf(buf + out, len - out, " Last Scan: %lu seconds ago\n",
- (get_seconds() - os->os_scantime.tv_sec));
-
return out;
}
@@ -1179,6 +1181,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
wake_up(&osb->osb_mount_event);
+ /* Start this when the mount is almost sure of being successful */
+ ocfs2_orphan_scan_init(osb);
+
mlog_exit(status);
return status;
@@ -1983,13 +1988,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
goto bail;
}
- status = ocfs2_orphan_scan_init(osb);
- if (status) {
- mlog(ML_ERROR, "Unable to initialize delayed orphan scan\n");
- mlog_errno(status);
- goto bail;
- }
-
init_waitqueue_head(&osb->checkpoint_event);
atomic_set(&osb->needs_checkpoint, 0);
--
1.6.0.4
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