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ocfs2: Disable orphan scanning for local and hard-ro mounts

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Local and Hard-RO mounts do not need orphan scanning.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Sunil Mushran 2009-06-22 11:40:07 -07:00 committed by Joel Becker
parent 3211949f89
commit df152c241d
5 changed files with 51 additions and 43 deletions
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26
fs/ocfs2/dlmglue.c
View File

@ -2366,15 +2366,20 @@ 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;
@ -2388,17 +2393,18 @@ 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,

4
fs/ocfs2/dlmglue.h
View File

@ -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);

30
fs/ocfs2/journal.c
View File

@ -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 {

2
fs/ocfs2/journal.h
View File

@ -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);

32
fs/ocfs2/super.c
View File

@ -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);