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Diffstat (limited to 'fs/jfs/jfs_logmgr.c')
-rw-r--r--fs/jfs/jfs_logmgr.c150
1 files changed, 90 insertions, 60 deletions
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index b6a6869ebb4f..dfa1200daa61 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -234,6 +234,7 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
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);
@@ -254,7 +255,7 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
*/
lsn = log->lsn;
- LOGSYNC_LOCK(log);
+ LOGSYNC_LOCK(log, flags);
/*
* initialize page lsn if first log write of the page
@@ -310,7 +311,7 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
}
}
- LOGSYNC_UNLOCK(log);
+ LOGSYNC_UNLOCK(log, flags);
/*
* write the log record
@@ -334,7 +335,6 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
return lsn;
}
-
/*
* NAME: lmWriteRecord()
*
@@ -927,9 +927,8 @@ static void lmPostGC(struct lbuf * bp)
* 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
+ * nosyncwait - 1 if called asynchronously
*
* RETURN: 0
*
@@ -945,6 +944,15 @@ static int lmLogSync(struct jfs_log * log, int nosyncwait)
struct lrd lrd;
int lsn;
struct logsyncblk *lp;
+ struct jfs_sb_info *sbi;
+ unsigned long flags;
+
+ /* push dirty metapages out to disk */
+ 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
@@ -954,10 +962,7 @@ static int lmLogSync(struct jfs_log * log, int nosyncwait)
*/
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 {
@@ -965,7 +970,7 @@ static int lmLogSync(struct jfs_log * log, int nosyncwait)
struct logsyncblk, synclist);
log->sync = lp->lsn;
}
- LOGSYNC_UNLOCK(log);
+ LOGSYNC_UNLOCK(log, flags);
}
@@ -974,27 +979,6 @@ static int lmLogSync(struct jfs_log * log, int nosyncwait)
* 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);
@@ -1066,6 +1050,18 @@ static int lmLogSync(struct jfs_log * log, int nosyncwait)
return lsn;
}
+/*
+ * NAME: jfs_syncpt
+ *
+ * FUNCTION: write log SYNCPT record for specified log
+ *
+ * PARAMETERS: log - log structure
+ */
+void jfs_syncpt(struct jfs_log *log)
+{ LOG_LOCK(log);
+ lmLogSync(log, 1);
+ LOG_UNLOCK(log);
+}
/*
* NAME: lmLogOpen()
@@ -1547,6 +1543,7 @@ void jfs_flush_journal(struct jfs_log *log, int wait)
{
int i;
struct tblock *target = NULL;
+ struct jfs_sb_info *sbi;
/* jfs_write_inode may call us during read-only mount */
if (!log)
@@ -1608,12 +1605,18 @@ void jfs_flush_journal(struct jfs_log *log, int wait)
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))
@@ -1621,7 +1624,24 @@ void jfs_flush_journal(struct jfs_log *log, int wait)
}
}
assert(list_empty(&log->cqueue));
- assert(list_empty(&log->synclist));
+ 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));
+ }
+// current->state = TASK_INTERRUPTIBLE;
+// schedule();
+ }
+ //assert(list_empty(&log->synclist));
clear_bit(log_FLUSH, &log->flag);
}
@@ -1669,6 +1689,7 @@ int lmLogShutdown(struct jfs_log * log)
lp->h.eor = lp->t.eor = cpu_to_le16(bp->l_eor);
lbmWrite(log, log->bp, lbmWRITE | lbmRELEASE | lbmSYNC, 0);
lbmIOWait(log->bp, lbmFREE);
+ log->bp = NULL;
/*
* synchronous update log superblock
@@ -1819,20 +1840,34 @@ static int lbmLogInit(struct jfs_log * log)
log->lbuf_free = NULL;
- for (i = 0; i < LOGPAGES; i++) {
- lbuf = kmalloc(sizeof(struct lbuf), GFP_KERNEL);
- if (lbuf == 0)
- goto error;
- lbuf->l_ldata = (char *) get_zeroed_page(GFP_KERNEL);
- if (lbuf->l_ldata == 0) {
- kfree(lbuf);
+ for (i = 0; i < LOGPAGES;) {
+ char *buffer;
+ uint offset;
+ struct page *page;
+
+ buffer = (char *) get_zeroed_page(GFP_KERNEL);
+ if (buffer == NULL)
goto error;
+ page = virt_to_page(buffer);
+ for (offset = 0; offset < PAGE_SIZE; offset += LOGPSIZE) {
+ lbuf = kmalloc(sizeof(struct lbuf), GFP_KERNEL);
+ if (lbuf == NULL) {
+ if (offset == 0)
+ free_page((unsigned long) buffer);
+ goto error;
+ }
+ if (offset) /* we already have one reference */
+ get_page(page);
+ lbuf->l_offset = offset;
+ lbuf->l_ldata = buffer + offset;
+ lbuf->l_page = page;
+ lbuf->l_log = log;
+ init_waitqueue_head(&lbuf->l_ioevent);
+
+ lbuf->l_freelist = log->lbuf_free;
+ log->lbuf_free = lbuf;
+ i++;
}
- lbuf->l_log = log;
- init_waitqueue_head(&lbuf->l_ioevent);
-
- lbuf->l_freelist = log->lbuf_free;
- log->lbuf_free = lbuf;
}
return (0);
@@ -1857,12 +1892,10 @@ static void lbmLogShutdown(struct jfs_log * log)
lbuf = log->lbuf_free;
while (lbuf) {
struct lbuf *next = lbuf->l_freelist;
- free_page((unsigned long) lbuf->l_ldata);
+ __free_page(lbuf->l_page);
kfree(lbuf);
lbuf = next;
}
-
- log->bp = NULL;
}
@@ -1974,9 +2007,9 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp)
bio->bi_sector = bp->l_blkno << (log->l2bsize - 9);
bio->bi_bdev = log->bdev;
- bio->bi_io_vec[0].bv_page = virt_to_page(bp->l_ldata);
+ bio->bi_io_vec[0].bv_page = bp->l_page;
bio->bi_io_vec[0].bv_len = LOGPSIZE;
- bio->bi_io_vec[0].bv_offset = 0;
+ bio->bi_io_vec[0].bv_offset = bp->l_offset;
bio->bi_vcnt = 1;
bio->bi_idx = 0;
@@ -2115,9 +2148,9 @@ static void lbmStartIO(struct lbuf * bp)
bio = bio_alloc(GFP_NOFS, 1);
bio->bi_sector = bp->l_blkno << (log->l2bsize - 9);
bio->bi_bdev = log->bdev;
- bio->bi_io_vec[0].bv_page = virt_to_page(bp->l_ldata);
+ bio->bi_io_vec[0].bv_page = bp->l_page;
bio->bi_io_vec[0].bv_len = LOGPSIZE;
- bio->bi_io_vec[0].bv_offset = 0;
+ bio->bi_io_vec[0].bv_offset = bp->l_offset;
bio->bi_vcnt = 1;
bio->bi_idx = 0;
@@ -2127,16 +2160,13 @@ static void lbmStartIO(struct lbuf * bp)
bio->bi_private = bp;
/* check if journaling to disk has been disabled */
- if (!log->no_integrity) {
+ if (log->no_integrity) {
+ bio->bi_size = 0;
+ lbmIODone(bio, 0, 0);
+ } else {
submit_bio(WRITE_SYNC, bio);
INCREMENT(lmStat.submitted);
}
- else {
- bio->bi_size = 0;
- lbmIODone(bio, 0, 0); /* 2nd argument appears to not be used => 0
- * 3rd argument appears to not be used => 0
- */
- }
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.