Imbus/xv6-riscv-kernel
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Fix layout issues for printed version

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This commit is contained in:
Frans Kaashoek 2011-09-01 10:25:20 -04:00
parent 15997d5849
commit e25b74ca80
7 changed files with 55 additions and 57 deletions
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19
log.c
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@ -76,12 +76,11 @@ install_trans(void)
//if (log.lh.n > 0)
// cprintf("install_trans %d\n", log.lh.n);
for (tail = 0; tail < log.lh.n; tail++) {
// cprintf("put entry %d to disk block %d\n", tail, log.lh.sector[tail]);
struct buf *lbuf = bread(log.dev, log.start+tail+1); // read i'th block from log
struct buf *dbuf = bread(log.dev, log.lh.sector[tail]); // read dst block
memmove(dbuf->data, lbuf->data, BSIZE);
bwrite(dbuf);
brelse(lbuf);
struct buf *lbuf = bread(log.dev, log.start+tail+1); // read log block
struct buf *dbuf = bread(log.dev, log.lh.sector[tail]); // read dst
memmove(dbuf->data, lbuf->data, BSIZE); // copy block to dst
bwrite(dbuf); // flush dst to disk
brelse(lbuf);
brelse(dbuf);
}
}
@ -102,7 +101,7 @@ read_head(void)
// cprintf("read_head: %d\n", log.lh.n);
}
// Write the in-memory log header to disk, committing log entries till head
// Write in-memory log header to disk, committing log entries till head
static void
write_head(void)
{
@ -144,10 +143,10 @@ void
commit_trans(void)
{
if (log.lh.n > 0) {
write_head(); // This causes all blocks till log.head to be commited
install_trans(); // Install all the transactions till head
write_head(); // Causes all blocks till log.head to be commited
install_trans(); // Install all the transactions till head
log.lh.n = 0;
write_head(); // Reclaim log
write_head(); // Reclaim log
}
acquire(&log.lock);