/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
struct buffer_head *bh;
int retry;
- BUG_ON(!spin_is_locked(&sdp->sd_log_lock));
-
do {
retry = 0;
static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
{
- struct inode *inode = sdp->sd_jdesc->jd_inode;
- int error;
- struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };
-
- bh_map.b_size = 1 << inode->i_blkbits;
- error = gfs2_block_map(inode, lbn, 0, &bh_map);
- if (error || !bh_map.b_blocknr)
- printk(KERN_INFO "error=%d, dbn=%llu lbn=%u", error,
- (unsigned long long)bh_map.b_blocknr, lbn);
- gfs2_assert_withdraw(sdp, !error && bh_map.b_blocknr);
-
- return bh_map.b_blocknr;
+ struct gfs2_journal_extent *je;
+
+ list_for_each_entry(je, &sdp->sd_jdesc->extent_list, extent_list) {
+ if (lbn >= je->lblock && lbn < je->lblock + je->blocks)
+ return je->dblock + lbn - je->lblock;
+ }
+
+ return -1;
}
/**
static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
{
unsigned int reserved;
- unsigned int old;
+ unsigned int unused;
gfs2_log_lock(sdp);
sdp->sd_log_commited_revoke += tr->tr_num_revoke - tr->tr_num_revoke_rm;
gfs2_assert_withdraw(sdp, ((int)sdp->sd_log_commited_revoke) >= 0);
reserved = calc_reserved(sdp);
- old = atomic_read(&sdp->sd_log_blks_free);
- atomic_add(tr->tr_reserved - (reserved - sdp->sd_log_blks_reserved),
- &sdp->sd_log_blks_free);
-
- gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) >= old);
+ unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved;
+ gfs2_assert_withdraw(sdp, unused >= 0);
+ atomic_add(unused, &sdp->sd_log_blks_free);
gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
sdp->sd_jdesc->jd_blocks);
-
sdp->sd_log_blks_reserved = reserved;
gfs2_log_unlock(sdp);