#include "jfs_incore.h"
#include "jfs_filsys.h"
#include "jfs_metapage.h"
+#include "jfs_superblock.h"
#include "jfs_txnmgr.h"
#include "jfs_debug.h"
static DECLARE_MUTEX(jfs_log_sem);
/*
- * external references
- */
-extern void txLazyUnlock(struct tblock * tblk);
-extern int jfs_stop_threads;
-extern struct completion jfsIOwait;
-extern int jfs_tlocks_low;
-
-/*
* forward references
*/
static int lmWriteRecord(struct jfs_log * log, struct tblock * tblk,
static bio_end_io_t lbmIODone;
static void lbmStartIO(struct lbuf * bp);
static void lmGCwrite(struct jfs_log * log, int cant_block);
-static int lmLogSync(struct jfs_log * log, int nosyncwait);
+static int lmLogSync(struct jfs_log * log, int hard_sync);
int lsn;
int diffp, difft;
struct metapage *mp = NULL;
+ unsigned long flags;
jfs_info("lmLog: log:0x%p tblk:0x%p, lrd:0x%p tlck:0x%p",
log, tblk, lrd, tlck);
*/
lsn = log->lsn;
- LOGSYNC_LOCK(log);
+ LOGSYNC_LOCK(log, flags);
/*
* initialize page lsn if first log write of the page
}
}
- LOGSYNC_UNLOCK(log);
+ LOGSYNC_UNLOCK(log, flags);
/*
* write the log record
return lsn;
}
-
/*
* NAME: lmWriteRecord()
*
* if new sync address is available
* (normally the case if sync() is executed by back-ground
* process).
- * if not, explicitly run jfs_blogsync() to initiate
- * getting of new sync address.
* calculate new value of i_nextsync which determines when
* this code is called again.
*
- * this is called only from lmLog().
- *
- * PARAMETER: ip - pointer to logs inode.
+ * PARAMETERS: log - log structure
+ * hard_sync - 1 to force all metadata to be written
*
* RETURN: 0
*
* serialization: LOG_LOCK() held on entry/exit
*/
-static int lmLogSync(struct jfs_log * log, int nosyncwait)
+static int lmLogSync(struct jfs_log * log, int hard_sync)
{
int logsize;
int written; /* written since last syncpt */
struct lrd lrd;
int lsn;
struct logsyncblk *lp;
+ struct jfs_sb_info *sbi;
+ unsigned long flags;
+
+ /* push dirty metapages out to disk */
+ if (hard_sync)
+ list_for_each_entry(sbi, &log->sb_list, log_list) {
+ filemap_fdatawrite(sbi->ipbmap->i_mapping);
+ filemap_fdatawrite(sbi->ipimap->i_mapping);
+ filemap_fdatawrite(sbi->direct_inode->i_mapping);
+ }
+ else
+ list_for_each_entry(sbi, &log->sb_list, log_list) {
+ filemap_flush(sbi->ipbmap->i_mapping);
+ filemap_flush(sbi->ipimap->i_mapping);
+ filemap_flush(sbi->direct_inode->i_mapping);
+ }
/*
* forward syncpt
*/
if (log->sync == log->syncpt) {
- LOGSYNC_LOCK(log);
- /* ToDo: push dirty metapages out to disk */
-// bmLogSync(log);
-
+ LOGSYNC_LOCK(log, flags);
if (list_empty(&log->synclist))
log->sync = log->lsn;
else {
struct logsyncblk, synclist);
log->sync = lp->lsn;
}
- LOGSYNC_UNLOCK(log);
+ LOGSYNC_UNLOCK(log, flags);
}
* reset syncpt = sync
*/
if (log->sync != log->syncpt) {
- struct jfs_sb_info *sbi;
-
- /*
- * We need to make sure all of the "written" metapages
- * actually make it to disk
- */
- list_for_each_entry(sbi, &log->sb_list, log_list) {
- if (sbi->flag & JFS_NOINTEGRITY)
- continue;
- filemap_fdatawrite(sbi->ipbmap->i_mapping);
- filemap_fdatawrite(sbi->ipimap->i_mapping);
- filemap_fdatawrite(sbi->sb->s_bdev->bd_inode->i_mapping);
- }
- list_for_each_entry(sbi, &log->sb_list, log_list) {
- if (sbi->flag & JFS_NOINTEGRITY)
- continue;
- filemap_fdatawait(sbi->ipbmap->i_mapping);
- filemap_fdatawait(sbi->ipimap->i_mapping);
- filemap_fdatawait(sbi->sb->s_bdev->bd_inode->i_mapping);
- }
-
lrd.logtid = 0;
lrd.backchain = 0;
lrd.type = cpu_to_le16(LOG_SYNCPT);
/* next syncpt trigger = written + more */
log->nextsync = written + more;
- /* return if lmLogSync() from outside of transaction, e.g., sync() */
- if (nosyncwait)
- return lsn;
-
/* if number of bytes written from last sync point is more
* than 1/4 of the log size, stop new transactions from
* starting until all current transactions are completed
* by setting syncbarrier flag.
*/
- if (written > LOGSYNC_BARRIER(logsize) && logsize > 32 * LOGPSIZE) {
+ if (!test_bit(log_SYNCBARRIER, &log->flag) &&
+ (written > LOGSYNC_BARRIER(logsize)) && log->active) {
set_bit(log_SYNCBARRIER, &log->flag);
jfs_info("log barrier on: lsn=0x%x syncpt=0x%x", lsn,
log->syncpt);
return lsn;
}
+/*
+ * NAME: jfs_syncpt
+ *
+ * FUNCTION: write log SYNCPT record for specified log
+ *
+ * PARAMETERS: log - log structure
+ * hard_sync - set to 1 to force metadata to be written
+ */
+void jfs_syncpt(struct jfs_log *log, int hard_sync)
+{ LOG_LOCK(log);
+ lmLogSync(log, hard_sync);
+ LOG_UNLOCK(log);
+}
/*
* NAME: lmLogOpen()
{
int i;
struct tblock *target = NULL;
+ struct jfs_sb_info *sbi;
/* jfs_write_inode may call us during read-only mount */
if (!log)
if (wait < 2)
return;
+ list_for_each_entry(sbi, &log->sb_list, log_list) {
+ filemap_fdatawrite(sbi->ipbmap->i_mapping);
+ filemap_fdatawrite(sbi->ipimap->i_mapping);
+ filemap_fdatawrite(sbi->direct_inode->i_mapping);
+ }
+
/*
* If there was recent activity, we may need to wait
* for the lazycommit thread to catch up
*/
if ((!list_empty(&log->cqueue)) || !list_empty(&log->synclist)) {
- for (i = 0; i < 800; i++) { /* Too much? */
+ for (i = 0; i < 200; i++) { /* Too much? */
msleep(250);
if (list_empty(&log->cqueue) &&
list_empty(&log->synclist))
}
}
assert(list_empty(&log->cqueue));
- assert(list_empty(&log->synclist));
+
+#ifdef CONFIG_JFS_DEBUG
+ if (!list_empty(&log->synclist)) {
+ struct logsyncblk *lp;
+
+ list_for_each_entry(lp, &log->synclist, synclist) {
+ if (lp->xflag & COMMIT_PAGE) {
+ struct metapage *mp = (struct metapage *)lp;
+ dump_mem("orphan metapage", lp,
+ sizeof(struct metapage));
+ dump_mem("page", mp->page, sizeof(struct page));
+ }
+ else
+ dump_mem("orphan tblock", lp,
+ sizeof(struct tblock));
+ }
+ }
+#endif
+ //assert(list_empty(&log->synclist));
clear_bit(log_FLUSH, &log->flag);
}
lbmStartIO(bp);
spin_lock_irq(&log_redrive_lock);
}
- if (current->flags & PF_FREEZE) {
+ if (freezing(current)) {
spin_unlock_irq(&log_redrive_lock);
- refrigerator(PF_FREEZE);
+ refrigerator();
} else {
add_wait_queue(&jfs_IO_thread_wait, &wq);
set_current_state(TASK_INTERRUPTIBLE);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff